Automatic Transfer Switch
Owner’s Manual
ATS Service Entrance
HS Type Transfer Switch
Models: 005036-0, 100 Amp, 250 Volts
and 004945-1, 200 Amp, 250 Volts
This manual should remain with the unit.
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Table of Contents
• Competent, qualified personnel should install,
operate and service this equipment. Adhere strictly
to local, state and national electrical and building
codes. When using this equipment, comply with
regulations the National Electrical Code (NEC),
CSA Standard; C22.1 Canadian Electric Code and
Occupational Safety and Health Administration
(OSHA) have established.
• Never handle any kind of electrical device while
standing in water, while barefoot, or while hands or
feet are wet. DANGEROUS ELECTRICAL SHOCK
MAY RESULT.
• Jewelry conducts electricity and wearing it may
cause dangerous electrical shock. Remove all jew-
elry (such as rings, watches, bracelets, etc.) before
working on this equipment.
• If work must be done on this equipment while
standing on metal or concrete, place insulative
mats over a dry wood platform. Work on this
equipment only while standing on such insulative
mats.
Safety Rules .........................................Inside Front Cover
Section 1 — General Information ...................................2
1.1 Introduction............................................................. 2
1.2 Equipment Description ........................................... 2
1.2.1 Transfer Switch Mechanism.......................... 2
1.2.2 Service Disconnect Circuit Breaker............... 2
1.3 Transfer Switch Data Decal..................................... 2
1.4 Transfer Switch Enclosure ...................................... 3
1.5 Safe Use Of Transfer Switch.................................... 3
Section 2 — Installation....................................................3
2.1 Introduction to Installation...................................... 3
2.2 Unpacking ............................................................... 3
2.3 Mounting ................................................................. 3
2.4 Connecting Power Source and Load Lines............... 3
2.5 Connecting Start Circuit Wires ................................ 4
Section 3 — Operation.......................................................4
3.1 Functional Tests & Adjustments.............................. 4
3.2 Manual Operation.................................................... 4
3.2.1 Close to Normal Source Side ........................ 5
3.2.2 Close to Emergency Source Side................... 5
3.2.3 Return to Normal Source Side ...................... 5
3.3 Voltage Checks......................................................... 6
3.4 Generator Tests Under Load ................................... 6
Section 4 – Installation Diagram....................................7
Section 5 – Electrical Data...............................................8
Section 6 – Exploded Views & Parts Lists..................12
Section 7 – Notes .............................................................16
Section 8 – Warranty ......................................Back Cover
• Never work on this equipment while physically or
mentally fatigued.
• Keep the transfer switch enclosure door closed
and bolted at all times. Only qualified personnel
should be permitted access to the switch interior.
• In case of an accident caused by electric shock,
immediately shut down the source of electrical
power. If this is not possible, attempt to free the
victim from the live conductor but AVOID DIRECT
CONTACT WITH THE VICTIM. Use a nonconduct-
ing implement, such as a dry rope or board, to free
the victim from the live conductor. If the victim is
unconscious, apply first aid and get immediate
medical help.
• When an automatic transfer switch is installed for
a standby generator set, the generator engine may
crank and start at any time without warning. To
avoid possible injury that might be caused by such
sudden start-ups, the system’s automatic start cir-
cuit must be disabled before working on or around
the generator or transfer switch. For that purpose,
a SAFETY DISCONNECT is provided inside the
transfer switch. Always set that switch to its OFF
position before working on the equipment. Then
place a “DO NOT OPERATE” tag on the transfer
switch and on the generator. Remove the Negative
(Neg) or (–) battery cable.
For authorized service,
reference the dealer locator
number found in the generator
owner’s manual.
1
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Section 1 — General Information
ATS “HS” Type Transfer Switch
Figure 1.1 — Typical ATS Transfer Mechanism
1.1 INTRODUCTION
This manual has been prepared especially for the
purpose of familiarizing personnel with the design,
application, installation, operation and servicing of
the applicable equipment. Read the manual carefully
and comply with all instructions. This will help to
prevent accidents or damage to equipment that might
otherwise be caused by carelessness, incorrect appli-
cation, or improper procedures.
UTILITY LUGS
UTILITY
CLOSING
COIL
Every effort has been expended to make sure that the
contents of this manual are both accurate and cur-
rent. The manufacturer, however, reserves the right
to change, alter or otherwise improve the product at
any time without prior notice.
GENERATOR
LUGS (E1 & E2)
GENERATOR
CLOSING
COIL
1.2 EQUIPMENT DESCRIPTION
The automatic transfer switch is used for transfer-
ring electrical load from a UTILITY (NORMAL) power
source to an EMERGENCY (STANDBY) power source.
Such a transfer of electrical loads occurs automati-
cally when the UTILITY power source has failed or is
substantially reduced and the EMERGENCY source
voltage and frequency have reached an acceptable
level. The transfer switch prevents electrical feedback
between two different power sources (such as the
UTILITY and EMERGENCY sources) and, for that
reason, codes require it in all standby electric system
installations.
LOAD LUGS (T1 & T2)
This transfer switch is for use in optional standby
systems only.
This transfer switch is suitable for use on a circuit
capable of 10,000 rms symmetrical amperes, 240
VAC maximum.
‹
1.2.2 SERVICE DISCONNECT CIRCUIT
BREAKER
The service disconnect circuit breaker for the 100
amp models are:
The transfer switch consists of a transfer mecha-
nism, service disconnect circuit breaker, a relay
control, fuses, and a terminal strip for connection of
sensing wires.
• Siemens, Type BQ, 2-pole
• 120/240VAC, 100A
• 50/60 Hertz
This transfer switch is suitable for use as service
entrance equipment.
• Heating, Air Conditioning and Refrigeration (HACR)
rated
• Wire range: #1 - #8 AWG.
• The conductor tightening torque is 50 in-lbs.
‹
1.2.1 TRANSFER SWITCH MECHANISM
These switches (Figure 1.1) are used with a single-
phase system, when the single-phase NEUTRAL line
is to be connected to a Neutral Lug and is not to be
switched.
The service disconnect circuit breaker for the 200
amp models are:
• Siemens, Type QN, 2-pole
• 120/240VAC, 200A
• 50/60 Hertz
Solderless, screw-type terminal lugs are standard.
Switch
Rating
100A
Wire
Range
#14-1/0 AWG
#6-250 MCM
Conductor Tightening
Torque
50 in-lbs.
• Heating, Air Conditioning and Refrigeration (HACR)
rated
• Wire range: 300 KCMIL - 4 AWG
• The conductor tightening torque is 250 in-lbs.
200A
275 in-lbs.
This transfer switch is suitable for control of motors,
electric discharge lamps, tungsten filament and elec-
tric heating equipment where the sum of motor full
load ampere ratings and the ampere ratings of other
loads do not exceed the ampere rating of the switch
and the tungsten load does not exceed 30 percent of
the switch rating.
1.3 TRANSFER SWITCH DATA DECAL
A DATA DECAL is permanently affixed to the transfer
switch enclosure. Use this transfer switch only with
the specific limits shown on the DATA DECAL and
on other decals and labels that may be affixed to the
switch. This will prevent damage to equipment and
property.
2
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Section 2 — Installation
GTS “HS” Type Transfer Switch
When requesting information or ordering parts for this
equipment, make sure to include all information from
the DATA DECAL.
2.3 MOUNTING
Mounting dimensions for the transfer switch enclo-
sure are in this manual. Enclosures are typically
wall-mounted. See “Installation Diagram”, Section 5.
Record the Model and Serial numbers in the space
provided below for future reference.
MODEL #
SERIAL #
Handle transfer switches carefully when install-
ing. Do not drop the switch. Protect the switch
against impact at all times, and against construc-
tion grit and metal chips. Never install a transfer
switch that has been damaged.
This transfer switch is mounted in a NEMA 3R enclo-
sure. It can be mounted outside or inside and should
be based on the layout of installation, convenience
and proximity to the utility supply and load center.
1.4 TRANSFER SWITCH ENCLOSURE
The standard switch enclosure is a National
Electrical Manufacturer’s Association (NEMA) 3R
type. NEMA 3R type enclosures primarily provide
a degree of protection against falling rain and sleet
and is undamaged by the formation of ice on the
enclosure.
Install the transfer switch as close as possible to the
electrical loads that are to be connected to it. Mount
the switch vertically to a rigid supporting structure.
To prevent switch distortion, level all mounting
points. If necessary, use washers behind mounting
holes to level the unit.
1.5 SAFE USE OF TRANSFER SWITCH
Before installing, operating or servicing this equip-
ment, read the SAFETY RULES (inside front cover)
carefully. Comply strictly with all SAFETY RULES to
prevent accidents and/or damage to the equipment.
The manufacturer recommends that a copy of the
SAFETY RULES are posted near the transfer switch.
Also, be sure to read all instructions and information
found on tags, labels and decals affixed to the equip-
ment.
2.4 CONNECTING POWER SOURCE
AND LOAD LINES
DANGER
Make sure to turn OFF both the UTILITY
(NORMAL) and EMERGENCY ( STANDBY) power
supplies before trying to connect power source
and load lines to the transfer switch. Supply
voltages are extremely high and dangerous.
Contact with such high voltage power sup-
ply lines causes extremely hazardous, possibly
lethal, electrical shock.
Two publications that outline the safe use of transfer
switches are the following:
• NFPA 70; National Electrical Code
• UL 1008, STANDARD FOR SAFETY-AUTOMATIC
TRANSFER SWITCHES
Wiring diagrams and electrical schematics are pro-
vided in this manual.
2.1 INTRODUCTION TO INSTALLATION
This equipment has been wired and tested at the
factory. Installing the switch includes the following
procedures:
Two suggested installation methods are shown. One
for new installations and/or retrofit and one for ret-
rofit.
• Mounting the enclosure.
NOTE:
• Connecting power source and load leads.
• Connecting the generator sensing and transfer
relay circuits.
• Connecting any auxiliary contact (if needed)
• Testing functions.
All installations must comply with national, state
and local codes. It is the responsibility of the
installer to perform an installation that will pass
the final electrical inspection.
The utility supply connection is made at the circuit
breaker terminals. The generator supply and custom-
er load connections are made at the transfer switch
mechanism, inside the switch enclosure.
2.2 UNPACKING
Carefully unpack the transfer switch. Inspect closely
for any damage that might have occurred during ship-
ment. The purchaser must file with the carrier any
claims for loss or damage incurred while in transit.
Check that all packing material is completely removed
from the switch prior to installation.
3
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Section 3 — Operation
ATS “HS” Type Transfer Switch
Conductor sizes must be adequate to handle the
maximum current to which they will be subjected to,
based on the 75°C column of tables, charts, etc. used
to size conductors. The installation must comply fully
with all applicable codes, standards and regulations.
NOTE:
When this ATS is used with an air-cooled genera-
tor, the LOAD 1 and LOAD 2 wires are not used.
3.1 FUNCTIONAL TESTS AND
Before connecting wiring cables to terminals, remove
any surface oxides from the cable ends with a wire
brush. All power cables must enter the enclosure
through the knockouts. If not using the knockouts,
entry must be at or below knockouts. If ALUMINUM
conductors are used, apply corrosion inhibitor to
conductors. Tighten terminal lugs to the torque
values as noted in Section 1.2.2, and on the decal
located on the inside of the door. After tightening ter-
minal lugs, carefully wipe away any excess corrosion
inhibitor.
ADJUSTMENTS
Following transfer switch installation and inter-
connection, inspect the entire installation care-
fully. A competent, qualified electrician should
inspect it. The installation should comply strictly
with all applicable codes, standards, and regula-
tions. When absolutely certain the installation is
proper and correct, complete a functional test of
the system.
Perform functional tests in the exact order pre-
Use a torque wrench to tighten the conduc-
sented in this manual, or damage could be done
tors, being sure not to overtighten, or damage
to the switch.
to the switch base could occur. If not tightened
enough, a loose connection would result, caus-
ing excess heat which could damage the switch
base.
IMPORTANT: Before proceeding with functional tests,
read and make sure all instructions and information
in this section are understood. Also read the infor-
mation and instructions of labels and decals affixed
to the switch. Note any options or accessories that
might be installed and review their operation.
Connect power source load conductors to clearly
marked transfer mechanism terminal lugs as fol-
lows
1. Connect UTILITY (NORMAL) power source cables
to circuit breaker.
2. Connect EMERGENCY (STANDBY) source power
cables to transfer switch terminals E1, E2.
3. Connect customer LOAD leads to switch termi-
nals T1, T2.
3.2 MANUAL OPERATION
DANGER
Do NOT manually transfer under load.
Disconnect transfer switch from all power sourc-
es by approved means, such as the main circuit
breaker(s).
A manual HANDLE is shipped with the transfer
switch. Manual operation must be checked BEFORE
the transfer switch is operated electrically. To check
manual operation, proceed as follows:
Conductors must be properly supported, of approved
insulative qualities, protected by approved conduit,
and of the correct wire gauge size in accordance with
applicable codes.
Be sure to maintain proper electrical clearance
between live metal parts and grounded metal. Allow
at least 1/2 inch for 100-400 amp circuits.
1. Turn the generator’s AUTO/OFF/MANUAL switch
to OFF.
2. Turn OFF both UTILITY (service disconnect cir-
cuit breaker) and EMERGENCY (generator main
line to circuit breaker) power supplies to the
transfer switch.
2.5 CONNECTING START CIRCUIT
WIRES
Control system interconnections consist of N1 and
N2, T1 and T2, and leads 23 and 194. Control system
interconnection leads must be run in a conduit that
is separate from the AC power lead. Recommended
wire gauge sizes for this wiring depends on the length
of the wire, as recommended below:
3. Turn the GENERATOR DISCONNECT SWITCH
to the OFF position.
4. Note position of transfer mechanism main con-
tacts by observing the moveable contact carrier
arm. This can be viewed through the long narrow
slot in the inside cover of the ATS. The top of the
moveable contact carrier arm is yellow to be eas-
ily identified.
• Manual operation handle in the UP position -
LOAD terminals (T1, T2) are connected to UTIL-
ITY terminals (N1, N2).
MAXIMUM WIRE LENGTH
RECOMMENDED WIRE
SIZE
460 feet (140m)
No. 18 AWG.
No. 16 AWG.
No. 14 AWG.
No. 12 AWG.
461 to 730 feet (223m)
731 to 1,160 feet (354m)
1,160 to 1,850 feet (565m)
4
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Section 3 — Operation
ATS “HS” Type Transfer Switch
Figure 3.1 — Actuating Transfer Switch
Attach handle to
the moveable contact
carrier arm.
NOTE: Return handle to
storage position in enclosure
when finished with manual transfer.
Move handle UP for the
NORMAL (UTILITY) position.
Move handle DOWN for the
STANDBY (EMERGENCY)
position.
• Manual operation handle in the DOWN posi-
tion - LOAD terminals (T1, T2) are connected to
EMERGENCY terminals (E1, E2).
‹
3.2.2 CLOSE TO EMERGENCY SOURCE SIDE
Before proceeding, verify the position of the switch
by observing the position of the manual operation
handle in Figure 3.1. If the handle is DOWN, the
contacts are closed in the EMERGENCY (STANDBY)
position. No further action is required. If the handle
is UP, proceed with Step 1.
Do not use excessive force when operating the
transfer switch manually or damage could be
done to the manual handle.
Step 1: With the handle inserted into the moveable
contact carrier arm, move the handle DOWN.
Be sure to hold on to the handle as it will
move quickly after the center of travel.
Step 2: Remove manual operating handle from move-
able contact carrier arm. Return handle to
storage bracket.
‹
3.2.1 CLOSE TO NORMAL SOURCE SIDE
Before proceeding, verify the position of the switch by
observing the position of manual operation handle in
Figure 3.1. If the handle is UP, the contacts are closed
in the NORMAL (UTILITY) position, no further action
is required. If the handle is DOWN, proceed with Step
1.
‹
3.2.3 RETURN TO NORMAL SOURCE SIDE
Step 1: With the handle inserted into the moveable
contact carrier arm, move handle UP. Be
sure to hold on to the handle as it will move
quickly after the center of travel.
Step 2: Remove manual operating handle from move-
able contact carrier arm. Return handle to
storage bracket.
Step 1: Manually actuate switch to return manual
operating handle to the UP position.
Step 2: Remove manual operating handle from move-
able contact carrier arm. Return handle to
storage bracket.
5
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Section 3 — Operation
ATS “HS” Type Transfer Switch
NOTE:
3.3 VOLTAGE CHECKS
1. Turn ON the UTILITY power supply to the trans-
fer switch using the service disconnect circuit
breaker.
Do NOT proceed until generator AC output volt-
age and frequency are correct and within stated
limits. If the no-load voltage is correct but no-load
frequency is incorrect, the engine governed speed
may require adjustment. If no-load frequency is
correct but voltage is not, the voltage regulator
may require adjustment.
DANGER
PROCEED WITH CAUTION. THE TRANSFER
SWITCH IS NOW ELECTRICALLY HOT. CONTACT
WITH LIVE TERMINALS RESULTS IN EXTREMELY
HAZARDOUS AND POSSIBLY FATAL ELECTRICAL
SHOCK.
3.4 GENERATOR TESTS UNDER LOAD
1. Set the generator's main circuit breaker to its
OFF or OPEN position.
2. Manually actuate the transfer switch main con-
tacts to their EMERGENCY (STANDBY) position.
Refer to Manual Operation (Section 3.2).
3. Tostartthegenerator, settheAUTO/OFF/MANUAL
switch to MANUAL. When engine starts, let it sta-
bilize for a few minutes.
4. Turn the generator's main circuit breaker to its
ON or CLOSED position. The generator now pow-
ers all LOAD circuits. Check generator operation
under load as follows:
2. With an accurate AC voltmeter, check for correct
voltage. Measure across ATS terminal lugs N1
and N2. Also check N1 to NEUTRAL and N2 to
NEUTRAL.
3. When certain that UTILITY supply voltage is cor-
rect and compatible with transfer switch ratings,
turn OFF the UTILITY supply to the transfer
switch.
4. On the generator panel, set the AUTO/OFF/
MANUAL switch to MANUAL position. The gen-
erator should crank and start.
5. Let the generator stabilize and warm up at no-
•
Turn ON electrical loads to the full rated watt-
age/amperage capacity of the generator. DO
NOT OVERLOAD.
load for at least five minutes.
6. Turn the GENERATOR DISCONNECT SWITCH
to the ON position.
•
With maximum rated load applied, check
voltage and frequency across transfer switch
terminals E1 and E2. Voltage should be
greater than 230VAC and frequency should be
greater than 59 Hertz.
7. Set the generator's main circuit breaker (CB1) to
its ON or CLOSED position.
DANGER
•
Let the generator run under rated load for at
least 30 minutes. With unit running, listen for
unusual noises, vibration, overheating, etc.,
that might indicate a problem.
PROCEED WITH CAUTION. GENERATOR
OUTPUT VOLTAGE IS NOW BEING DELIVERED
TO TRANSFER SWITCH TERMINALS. CONTACT
WITH LIVE TERMINALS RESULTS IN EXTREMELY
DANGEROUS AND POSSIBLY FATAL ELECTRICAL
SHOCK.
5. When checkout under load is complete, set main
circuit breaker of the generator to its OFF or
OPEN position.
8. With an accurate AC voltmeter and frequency
meter, check the no-load, voltage and frequency.
Measure across ATS terminal lugs E1 to E2. Also
check E1 to NEUTRAL and E2 to NEUTRAL.
a. Frequency.......................................60-62 Hertz
b. Terminals E1 to E2 ........................240-246 VAC
c. Terminals E1 to NEUTRAL.............120-123 VAC
d. Terminals E2 to NEUTRAL.............120-123 VAC
9. Set the generator’s main circuit breaker (CB1) to
its OFF or OPEN position.
6. Let the generator run at no-load for several
minutes. Then, shut down by setting the AUTO/
OFF/MANUAL switch to its OFF position.
7. Move the switch's main contacts back to their
UTILITY position. For example, LOAD connect-
ed to UTILITY power supply. Refer to Manual
Operation (Section 3.2). Handle and operating
lever of transfer switch should be in UP posi-
tion.
8. Turn on the utility power supply to transfer
switch, using whatever means provided (such
as a utility main line circuit breaker). The utility
power source now powers the loads.
10. Set the AUTO/OFF/MANUAL switch to the
OFF position to shut down the generator.
9. Set the generator's AUTO/OFF/MANUAL switch to
its AUTO position.
10. Set the GENERATOR DISCONNECT SWITCH to
the ON position. The system is now set for fully
automatic operation.
6
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Section 4 — Installation Diagram
ATS “HS” Type Transfer Switch
Drawing No. 0F0016-B
271mm[10.67"]
26.5mm[1.04"]
MOUNTING HOLES
Ø6.3mm[Ø0.25"]
0A6599tv
0A6599tv
561mm[22.09"
597mm[23.50"]
PADLOCK
(CUSTOMER SUPPLIED)
LOCATION
0
34mm[1.34"]
179.5mm[7.07"]
KNOCKOUT SUITABLE
FOR 3/4" & 1" CONDUIT SIZE
KNOCKOUT SUITABLE FOR
1", 1-1/4", 1-1/2" CONDUIT SIZE
3 PLACES
KNOCKOUT SUITABLE
FOR 1", 1-1/4", 1-1/2" CONDUIT SIZE
324mm[12.76"]
7
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Section 5 — Electrical Data
ATS “HS” Type Transfer Switch
Transfer Switch Interconnections - Drawing No. 0F0017-A
8
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Section 5 — Electrical Data
ATS “HS” Type Transfer Switch
Transfer Switch Interconnections - Drawing No. 0F0017-A
IF ATS IS USED AS SERVICE ENTRANCE
DEVICE A BONDING JUMPER WILL NEED
TO BE INSTALLED SIZED TO MEET
NATIONAL & LOCAL CODES.
UTILITY
METER
SOCKET
SERVICE DISCONNECT
ATS
INSULATED SPLICING
CONNECTOR OR
(NEW WIRES CAN BE
PULLED FROM ATS &
PANELBOARD).
E2
T2
NOTE: INSTALLATION TO BE DONE BY A
E1
LICENSED ELECTRICIAN AND MUST
MEET ALL NATIONAL, STATE AND
LOCAL ELECTRICAL CODES.
22
33
FROM
ALTERNATOR
STATOR
EXISTING WIRES TO
PANELBOARD
(SEE ABOVE NOTE)
11
44
E1 E2
N1
N2
T1 *
T2 *
*-WIRES T1 & T2 NOT
USED ON AIR COOLED UNITS
AND SOME LIQUID COOLED UNITS
23
194
NEUTRAL BAR
GROUND BAR
DISCONNECT
BONDING
CONNECTION
IN PANELBOARD
RETROFIT
AC GENERATOR
CONTROL PANEL
PANELBOARD
9
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Section 5 — Electrical Data
ATS “HS” Type Transfer Switch
Wiring Diagram/Schematic - Drawing No. 0F0015-A
10
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Section 5 — Electrical Data
ATS “HS” Type Transfer Switch
Wiring Diagram/Schematic - Drawing No. 0F0015-A
11
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Section 6 — Exploded Views and Parts List
ATS “HS” Type Transfer Switch
100A Transfer Switch Assembly – Drawing No. 0F0466$-D
63378-T
63378-T
63378-T
63378-T
5 9
P / N 0 A 2 5
I R E
T A I O N O R I E N T T E N W
O
R A N I W N G
( 1 2 V D C )
W I R E
4 9 1
3 2
( 1 2 V D C )
W I R E
0 3 A , 6 0 0 V
D 2 8 0 6 - T
( O P T I O N A L )
N E U T R A L
C A )
T 2
( 2 4 0
V
W I R E
C A )
T 1
( 2 4 0
V
W I R E
C A )
N 2
C A )
N 1
( 2 4 0
V
W I R E
( 2 4 0
V
W I R E
WAUKESHA, WI.
GENERAC POWER SYSTEMS, INC.
0 F 2 7 1 0
OR ALUUMINUM WIRE OF AT LEAST 75°
c
RATING
ALL TERMINALS LUGS ARE SUITABLE FOR COPPER
#0C1026 OR #0D8440 0R #0E0117 OR #0E5241A
SWITCH IS FOR USE WITH CONTROL PANEL ASSEMBLY
MAXIMUM VOLTS
MAXIMUM AMPS
-
240
100
RATING
SWITCH
-
MODEL NUMBER
SERIAL NUMBER
SYSTEM VOLTAGE
TRANSFER SYSTEM DATA
0C4449A-RS
D2806-E
30A, 600V
12
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Section 6 — Exploded Views and Parts List
ATS “HS” Type Transfer Switch
100A Transfer Switch Assembly – Drawing No. 0F0466$-D
ITEM
PART NO.
QTY.
DESCRIPTION
1
2
0C2237
0E7886H
0E7890
0E9906
063378
0D3728
0E9999
049813
0E6523
063617
0D2806
073590A
047822
0A1661
0C4449
090388
0E1473
0E9907
0E1477
0F0668
0E3070
0E9734
0E3484
0E3485
067210A
0A9457
0D3587
0A2595
0F0776
081221
045764
074908
066849B
0C3992
026579
0E7213
022473
022097
0E9987
0E6193
064526
0E6155
036933
077033
0C8308
022152
0912970085
0912970086
095282
0F2710
066849
0E6303
0E6303A
0E6303C
1
1
1
1
8
1
1
4
1
1
2
4
1
2
1
2
1
1
1
1
1
REF
1
1
1
1
1
1
1
1
6
2
2
2
2
2
8
4
1
1
2
1
6
6
1
6
1
1
1
1
4
1
1
1
TRANSFER SW-HSB 100A 2P 250V
CB 0100A 2P 240V S BQ2 LB
BRKT CB MTG BACK
3
4
BRACKET, DISCONNECT SWITCH 100A
HOLDER, CABLE TIE
5
6
SWITCH TOG SPST 15A @ 125V
DECAL SERVICE DISCONNECT SWITCH
NUT HEX M6 X 1.0 G8 YEL CHR
GROUND BAR (5)4-14 AWG CONN
RELAY PNL 12VDC DPDT 10A@240VA
FUSEBLOCK 30A 600V 2POS W/SQ
FUSE 5A X BUSS
7
8
9
10 ***
11 ***
12
1 3 ***
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42 **
43
44
45
46
47
48
49
50
51
52
53
54
BLOCK TERM 20A 7 X 6 X 1100V
RIVET POP .156 X .675 AL
ASS’Y-NTRL BL 150-200A
SCREW HHTT M6-1.0 X 12 ZINC
WELDMENT TRANSFER SWITCH BOX
COVER INSIDE XFER SWITCH BOX
COVER TRANSFER SWITCH BOX
DECALTRANSFER SWITCH
SUBPLT XFER SW HSB
DECAL SWITCH RATING
DECAL WARN MANUAL OPER HANDLE
DECAL SERVICE DISCONNECT
DECAL GROUND LUG (NOT SHOWN)
DECAL NEUTRAL
DECAL FUSE REPLACEMENT
DECAL TERMINAL STRIP
DECAL TEST SEQ. 2P TS HS 3R
DECAL-UL LIST HSB
SCREW HHTT M4-0.7 X 8 BP
SCREW HHTT M5-0.8 X 10 BP
SCREW HHTT M5-0.8 X 8 BP
SCREW HHTT M4-0.7 X 16 BP
WASHER SHAKEPROOF EXT #8 STEEL
SCREW THUMB 1/4-20 X 1/2 W/SHLD
WASHER FLAT 1/4-M6 ZINC
WASHER LOCK M6-1/4
WIRE HARNESS HSB (NOT SHOWN)
BRACKET ARM EXTENDER
SCREW HWHS #6-25 X 3/8 ZNC
ARM EXTENDER PIN
SCREW PPHM #10-32 X 3/8
LUG SLDLSS 1/0-#14X9/16 AL/CU
DECAL TERMINAL SHOCK HAZARD
WASHER LOCK #10
WIRE ASSY 2AWG 100A 2-P T/S N1A
WIRE ASSY 2AWG 100A 2-P T/S N2A
DECAL LIVE-CIRCUIT
DECAL XFER SWITCH DATA SE 100A
SCREW HHTT M5-0.8 X 16
WIRE – A
WIRE – B
WIRE – E1
*** SUPPLIED WITH WIRE HARNESS ITEM #39
** SUPPLIED WITH TRANSFER SWITCH (ITEM #1)
13
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Section 6 — Exploded Views and Parts List
ATS “HS” Type Transfer Switch
200A Transfer Switch Assembly – Drawing No. 0E9801$-F
16
15
31
2
3
55 INSIDE RIGHT SIDE
17
52 53
19
26
NOTE:LOCATE HOLE IN BUSBAR
UNDER BALL END OF SCREW
TIGHTENING TORQUE 250 IN-LBS
0C4449A-T
0A6599tv
0A6599tv
33
22
STL
7-
1-
7
2
3
0
-
S
TL
1-
20STL
73-S
0A9457
22 INSIDE LEFT SIDE
10
11 12 31
31
46
27
4
7
8
37 38 43
SEE SIDE VIEW FOR HARDWARE DETAIL
TORQUE ITEM #8 TO 12 FT-LBS
18
Replace with UL
listed fuse of same
type and rating
7
8
3
T
6
600 Volt, 5 amp.
A
56
0D3587
UTILITY
(C1 & VR1)
22
STL
7-S
T L S -
3
1
X 2 0
2 2 - 4 4 7
5
5
6
6
38 44
38 45
TORQUE ITEM #6
TO 72 IN-LBS.
47
1
7
8
3
T
6
30
STANDBY
D2806-T
30A, 600V
E1
(C2 & VR2)
21
B
S
D 2 8 0 6 -
0 3 A , 6 0 0 V
7
8
3
T
6
50
11 12 31
4 8 8 5 0 - E
47822-T
LISTED
R
C
US
AUTOMATIC TRANSFER SWITCH
FOR USE IN OPTIONAL
STAND-BY SYSTEMS
64NL
CUSTOMER CONNECTIONS
32
36
0A6599tv
0
A
6
5
9
9
t
v
A
22
STL
7-
1-
7
2
3
0
-
S
TL
1-
20STL
73-S
32 37 37 38
QTY. 2 ITEM #37's BELOW SUBPLATE
QTY. 1 ITEM #37 ABOVE SUBPLATE
4 PLACES
9
34 35
43
37
13
28
14
48
DETAIL "A"
38
8
7
DECAL DETAILS
VIEWS SHOWN WITH ITEMS #18 & #19 FULLY ASSEMBLED
(NOT TO SCALE)
24
22097-S
1/4 STL
T
S
L -
3
2
1
2
-
4
4 X 2 0
7
BUSBAR
19
SWITCH
BUSBAR HARDWARE
DETAIL
AUTOMATIC
TRANSFER SWITCH
20
0E3485
51
34
0E9999
NEMA 3R - INDOOR/OUTDOOR USE
9
40 41 42
35
29
INSIDE
OF
COVER
ENCLOSURE
0E3484
DETAIL A
(GROUND LUG ASSEMBLY)
23
0C8308
54
49
18
14
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Section 6 — Exploded Views and Parts List
ATS “HS” Type Transfer Switch
200A Transfer Switch Assembly – Drawing No. 0E9801$-F
ITEM
PART NO.
QTY.
DESCRIPTION
1
2
3
4
5
6
7
8
9
0D9618
0E3628
0E3664
0E3553
0E3375
0F1252
036656
022127
0E6523
063617
0D2806
073590A
047822
0A1661
0C4449A
090388
0E1473
0E9989
0E1477
0F0668
0E3070
0E3477
0E3484
0E3485
067210A
0A9457
0D3587
0A2595
0E7109
063378
045764
049813
074908
0C3992
026579
0E7213
022473
022097
0E9987
0E6193
064526
0E6155
0E6032
0E6033
0E6034
0E6303
0E6303A
0E6303B
0C8308
081221
0E9999
0E9988
0D3728
095282
0F2712
066849
1
1
1
2
4
4
2
2
1
1
2
4
1
2
1
2
1
1
1
1
1
REF
1
1
1
1
1
1
1
8
8
5
2
2
2
2
14
10
1
1
2
1
2
2
2
1
1
1
1
1
1
TRANSFER SW-HSB 200A 2P 250V
CIRCUIT BREAKER 0200A 2P 120/240V S QN
BASE QN CIRCUIT BREAKER
BUSBAR 200A HSB XFER SW
LUG SLDLSS 250-#6 AL/CU
SCREW BHSC 1/4-20 X 3/8
SCREW SHC 1/4-20 X 1 G8.8 NZ
NUT HEX 1/4-20 STEEL
GROUND BAR (5)4-14 AWG CONN
RELAY PNL 12VDC DPDT 10A@240VA
FUSEBLOCK 30A 600V 2POS W/SQ
FUSE 5A X BUSS
BLOCK TERM 20A 7 X 6 X 1100V
RIVET POP .156 X .675 AL
ASS’Y-NTRL BL150-200A
SCREW HHTT M6-1.0 X 12 ZINC
WELDMENT TRANSFER SWITCH BOX
COVER INSIDE XFER SWITCH BOX
COVER TRANSFER SWITCH BOX
DECALTRANSFER SWITCH
SUBPLT XFER SW HSB
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42 *
43 *
44 *
45 *
46
47
48
49
50
51
52
53
54
55
56
DECAL SWITCH RATING
DECAL WARN MANUAL OPER HANDLE
DECAL SERVICE DISCONNECT
DECAL GROUND LUG (NOT SHOWN)
DECAL NEUTRAL
DECAL FUSE REPLACEMENT
DECAL TERMINAL STRIP
DECAL TEST SEQ.2P TS HS 3R
HOLDER CABLE TIE
SCREW HHTT M4-0.7 X 8 BP
NUT HEX M6 X 1.0 G8 YEL CHR
SCREW HHTT M5-0.8 X 10 BP
SCREW HHTT M4-0.7 X 16 BP
WASHER SHAKEPROOF EXT #8 STEEL
SCREW THUMB 1/4-20 X 1/2 W/SHLD
WASHER FLAT 1/4-M6 ZINC
WASHER LOCK M6-1/4
WIRE HARNESS HSB (NOT SHOWN)
BRACKET ARM EXTENDER
SCREW HWHS #6-25 X 3/8
ARM EXTENDER PIN
90 DEGREE UP SPADE CONNECTOR
90 DEGREE DN SPADE CONNECTOR
STRAIGHT SPADE CONNECTOR
WIRE A
WIRE B
WIRE E1
DECAL TERMINAL SHOCK HAZARD
DECAL-UL LIST HSB
DECAL-SERVICE DISCONNECT SWITCH
BRACKET SERVICE SWITCH
TOBBLE SWITCH, SERVICE
DECAL LIVE-CIRCUIT
1
1
1
1
DECAL XFER SWITCH DATA SE 200A
SCREW HHTT M5-0.8 X 16
5
* SUPPLIED WITH TRANSFER SWITCH ITEM #1
15
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Section 7 — Notes
ATS “HS” Type Transfer Switch
®
16 Generac Power Systems, Inc.
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Section 7 — Notes
ATS “HS” Type Transfer Switch
®
Generac Power Systems, Inc. 17
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Section 8 — Warranty
ATS “HS” Type Transfer Switch
GENERAC POWER SYSTEMS, INC. WARRANTY/SERVICE
Generac Power Systems, Inc. will warrant that from the date of purchase, our transfer
switch will be free from defects in material and workmanship for the items and periods set
forth in the warranty statement found in the owners manual of the Generac Power Systems
Inc. generator that this transfer switch will be utilized with.
Any equipment that the purchaser/owner claims to be defective must be examined by the
nearest Generac Authorized Warranty Service Dealer by visiting our website at www.gener-
ac.com or by calling the dealer locator number at 1-800-333-1322. Select the prompt that
describes the brand name of the generator.
THIS WARRANTY IS IN PLACE OF ALL OTHER WARRANTIES, EXPRESSED OR
IMPLIED, SPECIFICALLY, GENERAC MAKES NO OTHER WARRANTIES AS TO THE
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
Some states do not allow limitations on how long an implied warranty lasts, so the above
limitation may not apply to you.
GENERAC’S ONLY LIABILITY SHALL BE THE REPAIR OR REPLACEMENT OF PART(S)
AS STATED ABOVE. IN NO EVENT SHALL GENERAC POWER SYSTEMS, INC. BE
LIABLE FOR ANY INCIDENTAL, OR CONSEQUENTIAL DAMAGES, EVEN IF SUCH
DAMAGES ARE A DIRECT RESULT OF GENERAC’S NEGLIGENCE.
Some states do not allow the exclusion or limitation of incidental or consequential dam-
ages, so the above limitations may not apply to you.
This warranty gives you specific legal rights. You also may have other rights that vary from
state to state.
®
GENERAC POWER SYSTEMS, INC.
P.O. BOX 297 • WHITEWATER, WI 53190
Part No. 0E9905
Revision F (07/21/05)
Printed in U.S.A.
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