GE Zenith Controls
Product Bulletin
e
ZTS Series
Automatic Transfer Switches
Since its introduction, the GE Zenith ZTS Series of
transfer switches has become a hallmark of quality
and performance. Reliability resulting from superior
design and heavy duty construction has made the
ZTS the industry standard for critical installations.
Our emphasis on research and development, design
improvements, materials, manufacturing methods,
quality assurance, and service yields products that have
been proven in hundreds of thousands of applications.
Specification
Assistance
Subsequent to the first ZTS units installed, our engin-
eering staff has been dedicated to the improvement
and expansion of our line. Today, GE Zenith offers the
widest selection of transfer switch products worldwide.
GE Zenith offers a complete
range of product guide
specifications to help you
determine your needs.
For more information,
• ZTS Automatic Transfer Switches
40-4000 Amps
please consult your local
GE Zenith representative,
our factory or our website
• ZTSD Delayed Transition Transfer Switches
40-4000 Amps
• ZTSCT Closed Transition Transfer Switches
100-4000 Amps
• Codes and Standards
ꢀ NFPA 70, 99, 101, 110
ꢀ NEC 517, 700, 701, 702
ꢀ IEEE 446, 241
• ZBTS Automatic Transfer/Bypass Switches
100-4000 Amps
ꢀ NEMA ICS2-447
• Controls tested in accordance with:
ꢀ IEEE 472 (ANSI C37.90A)
ꢀ EN55022 Class B (CISPR 11)
(Exceeds EN55011 & MILSTD 461 Class 3)
ꢀ EN61000-4-2 (Level 4)
• ZBTSD Delayed Transition Bypass Switches
100-4000 Amps
• ZBTSCT Closed Transition Bypass Switches
100-4000 Amps
ꢀ EN61000-4-3 (ENV50140) 10 v/m
ꢀ EN61000-4-4
All ZTS products meet or exceed industry requirements
allowing specification and installation confidence.
ꢀ EN61000-4-5, IEEE C62.41 (1.2 X 50
ꢀ EN61000-4-6 (ENV50141)
ꢀ EN61000-4-11
ms, 5 & 8 kV)
• UL 1008 listed through 480 VAC
• CSA C22.2 No. 178 listed through 600 VAC
• IEC 947-6-1 listed through 480 VAC
• Enclosures meet the requirements of:
ꢀ UL 508, 50
ꢀ ICS 6
ꢀ ANSI C33.76
ꢀ NEMA 250
• Quality System:
ꢀ ISO 9001 Registered
PB-5066 (6/04)
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MX250 series
Microprocessor Controller
LEDs are used in a recognizable line configuration
for continuous monitoring of switch position. A new
LCD display shows source availability, exercise time
delay operation and system source condition. A new
simplified adjustment is featured for voltage, frequency
and time delay settings.
Performance Features
• UL, CSA and IEC listed
• Ringing wave immunity per IEEE 472 (ANSI C37.90A)
• Condusted and Radiated Emissions per EN55022 Class B
(CISPR 11) (Exceeds EN55011 & MILSTD 461 Class 3)
• ESD Immunity test per EN61000-4-2 (Level 4)
• Radiated RF, electromagnetic field immunity test
per EN61000-4-3 (ENV50140) 10v/m
The control operates off a close differential 3
phase under-voltage sensing of source 1, factory
standard setting 90% pickup, 80% dropout; under-
frequency sensing of source 1 factory setting 95%
pickup; voltage and frequency sensing of source 2,
factory standard setting 90% pickup voltage, 95%
pickup frequency. All factory settings are operator
adjustable (see table below).
• Electrical fast transient/burst immunity test
for EN61000-4-4
• Surge immunity test per EN61000-4-5 IEEE C62.41
(1.2 x 50ms, 5 & 8 kV)
• Conducted immunity test per EN61000-4-6 (ENV50141)
• Voltage dips and interruption immunity EN61000-4-11
Technical Benefits
A test is standard (fast test/load/no load) to
simulate source 1 failure - automatically bypassed
should source 2 fail.
• Separate line voltage components for controller isolation
• Inputs optoisolated for high electrical immunity to transients and noise
• Built-in electrical operator protection
• Simplified maintenance – major components are easily replaceable
• Close differential under-voltage sensing of the normal source
• Voltage and frequency sensing of the emergency source
(all settings are adjustable)
More Enhanced Features
• Available in ALL transfer modes:
~ Open, Delayed & Bypass
~ Closed (with newly integrated transition control)
• User-friendly programmable engine exerciser,
used for the engine generator with or without
load, at ANY interval in a one-year period
• Operating voltages available in a single
controller for most domestic and international
applications
• Real-time display of ATS status, including
active timer(s)
• Multiple levels of user-defined password
protection
• Serial communications allowing connectivity
with other ATS's, paralleling switchgear, and
SCADA systems
• Time-tested synchronous logic automatically
measures phase angle and frequency allowing
disturbance-free transfer
• Unsurpassed statistical ATS/System monitoring
available in real-time
• T3/W3 elevator pre-signal. Automatically
bypassed if the selected source fails, minimizing
time an elevator is without power
• Universal Motor Disconnect (UMD) sends
a pre-signal, post-signal or both to any motor
control center. Not bypassed in an outage,
the UMD ensures safety in the event of a
single phase loss
• Voltage unbalance detection standard
• Extensive 2/5/10 Warranty
Page 3 • PB-5066
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ZTS Series
Accessory Group Matrix
Group Packages
Accessories
MSTDS MEXES MCONS MSENS
MSPES MPSGS
6P
A1
A1E
A3
2
2
2
2
2
2
2
2
3
3
A4
Calibrate
CDT
CDP
**DS
*DT
*DW
E
EL/P
K/P
L1
L2
L3
L4
*LN
P1
Q2
Q3
Q7
R1-1
R1-3
R15
*R15D
R16
R50
S5P
S12P
S13P
T
2
2
2
2
2
2
2
2
2
2
2
2
T3/W3
U
UMD
VI
W
YEN
Standard Accessory included in the group package.
Optional Accessory not included but can be added to group package.
Optional Accessory. Can not be used with accessory having the same symbol.
N/A
Denotes an Accessory with 2 circuits as a standard.
Denotes an Accessory with 3 circuits as a standard.
2
2
3
Delayed Transition Units Only.
Optional for 40-400 Amp
*
**
PB-5066 • Page 4
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ZTS Series
Accessory Definitions
6P
CTAP
Microprocessor activated test switch (Momentary)
Chicago transfer alarm panel mounted in door of
enclosure. Includes 3 aux. contacts and fuse.
6A
Hardwired test switch (Maintained)
DS
Disconnect Switch. Disconnects source voltage
to transfer power panel
6AP
Microprocessor activated test switch (Maintained)
DT (DelayedTransition Only)
Time Delay from Neutral Switch position
to Source 1 on retransfer
6B
Hardwired test switch (Maintained Auto -
Momentary Test) Key operated
DW (DelayedTransition Only)
Time Delay from Neutral Switch position
to Source 2 on retransfer
6C
Hardwired test switch (Maintained Auto -
Maintained Test) Key operated
E
A1
Engine Start Relay
Auxiliary Contact S.P.D.T. - Normal (Source 1)
Failure
EL/P
Event log of last 16 events
A1E
Auxiliary Contact S.P.D.T. - Emergency (Source 2)
Failure
F
Fan contact, closed when engine runs.
A3
HT(1)(2)
Auxiliary Contact - closed in emergency (source 2)
Additional available (10 max.) on ZTS and need
to be specified
Heater and Thermostat 208/240V (1)
380/600V (2) mounted and interwired in
enclosure. (requires larger enclosure for 40-200A)
A4
K
Auxiliary Contact - closed in normal (source 1)
Additional available (10 max.) on ZTS and
need to be specified
Frequency Meter - Door mounted
K/P
Frequency Indication on the controller
A62
Motor disconnect and staged restart (1 contact)
L
LNP Center-off position LCD-Indicator
Indicating LED lights:
AB3
Auxiliary Contact - closed in bypass emergency
(source 2) (S.P.D.T.) (Standard up to 400A)
Additional available (10 max.) on ZTS and need
to be specified
L1 Indicates Switch in Source 2 position.
L2 Indicates Switch in Source 1 position.
L3 Indicates Source 1 available.
L4 Indicates Source 2 available.
AB4
M1
Auxiliary Contact - closed in bypass normal
(source 1) (S.P.D.T.) (Standard up to 400A)
Additional available (10 max.) on ZTS and
need to be specified
Single Phase Amp Meter
M2
Three Phase Amp Meter
B9
M80
Battery charger (ships separate from ATS)- semi-
float 5 amp (need to specify input/output voltage
and type LA, N, FL)
Digital Meter Measures and displays true RMS volts,
amps and frequency in a three-phase power system.
M82
Calibrate
Microprocessor activated calibration feature
Digital Meter Includes M80 functions plus Watts,
KVA, KVAR, PF, etc. w/Modbus RS485 port
CDP
M83
Programmable exerciser daily, 7/14/28/365 days
user-selectable, with or without load.
Digital Meter Includes M82 functions plus
THD capability and Modbus RS485 port
CDT
M84
Exerciser no load timer. Increased functionality no
longer requires a jumper.
Digital Meter Includes M83 functions plus
unbalance 128 samples/cycle data logging,
waveform capture and sag/swell capture.
Page 5 • PB-5066
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ZTS Series
Accessory Definitions
S12P
M85
Microprocessor activated auto/manual retransfer
selector switch for trnsferring to Normal
(Source 1) (includes microprocessor activated
YN & YE accessory)
Digital Meter Includes M84 functions plus
unbalance 256 samples/cycle data logging,
waveform capture and sag/swell capture.
M86
S13P
Digital Meter Includes M85 functions plus
large graphical screen display with Ethernet
communications port.
Microprocessor activated commit/no commit
on transferring to Emergency (Source 2)
(with enable/disable)
N1
S14
Running Time Indicator - Door mounted
Keyed selector switch for
(retransfer to normal-test-auto)
N2
Operation Counter - Door Mounted
SW1
Auto/Off/Start Engine control selector -
Door mounted (keyed or non-keyed
operation available)
P1
Engine Start Timer (adjustable to 6 sec.)
P2
SW2
Engine Start Timer (adjustable to 300 sec.)
Auto/Off Engine control selector - Door mounted
(keyed or non-keyed operation available)
Q2
Peak shave/remote load test/area protection -
Relay (S.P.D.T.) (Need to specify voltage - 120 VAC,
24 VAC, 24 VDC - 120V default standard)
SW3
Source Priority Selector Switch - Door mounted
Allows selection of Source 1 or Source 2 to be
the Prime Source. Transfer Switch will transfer to
selected Prime Source if that Source is available.
(keyed or non-keyed operation available)
Q3
Inhibit transfer to emergency (Source 2) (load add
relay) - Relay (S.P.D.T.) (Need to specify voltage -
120 VAC, 24 VAC, 24 VDC - 120V default standard)
T
Retransfer to normal adjustable time delay
Q7
Inhibit transfer to normal (Source 1) - Relay
(S.P.D.T.) (Need to specify voltage - 120 VAC, 24
VAC, 24 VDC - 120V default standard)
T3/W3
Pre-signal contact on transfer to Normal (Source 1)
or Emergency (Source 2) during test.
R1-1/R1-3
Over Voltage sensing for normal (Source 1)
single (R1-1) or three (R1-3) phase
U
Engine stop /cool adjustable cool down timer
UMD
R15/R15D
Pre and ppost transfer output adjustable time range.
Functions in both directions. Includes 2 circuits.
Additional circuits available.
Load Shed. Should Source 2 become overloaded,
a signal can be given to switch to the dead
or Mid position.
VI
R16
Voltage imbalance between phases (3 Phase only)
Phase rotation sensing of Normal (Source 1) and
Emergency (Source 2)
W
Adjustabvle time delay on transfer to Emergency
(Source 2)
R26/R26D
Interruptable Power Rate Provisions.
Allow transfer out of Source 1 position to Mid
position or dead Source 2. Alarm and Pre-Signal
circuit included. (Need to specify voltage - 120 VAC,
24 VAC, 24 VDC - 120V default standard)
YEN
Bypass transfer timers function (soft switch in control)
ZNET
Microprocessor Communication Module
R50
In Phase monitor between Normal (Source 1) and
Emergency (Source 2) to allow transfer
S5P
Microprocessor activated auto/manual retransfer
selector switch for trnsferring to Normal (Source 1)
(includes microprocessor activated YN accessory)
PB-5066 • Page 6
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ZTS Series
Withstand Ratings
GE Zenith ZTS Series Automatic Transfer Switches have been subjected to an extensive test program to show that they comply with and exceed UL 1008 standards,
as well as the various performance specifications used by most government agencies and major electrical engineering firms throughout the world. The primary test to
ensure the quality and dependability of an automatic transfer switch is its ability to close into and withstand high fault currents. The table shows the Underwriters
Laboratories and Canadian Standards certified withstand and closing current ratings in symmetrical RMS amperes at 480 and 600 volts AC.
GE Zenith ZTS Switches
Rated for Total Systems or Motor Loads (1)
Withstand and Closing Current Ratings per UL 1008 and CSA
Specific Coordinated
Breaker Rating (3)
Any Molded Case
Breaker Rating
Current Limiting Fuse
UL 1008
ZTS Switch
Rating
GE Zenith
Model No.
Maximum
Maximum
Maximum
Circuit
Breaker
Size Amps
Maximum
Maximum
Maximum
Fuse Size
Amps
Maximum
Maximum
Circuit Amps
at 600 VAC (CSA)
Circuit Amps Circuit Amps
Circuit Amps Circuit Amps
Circuit Amps
at 480 VAC
(UL)
at 600 VAC
(CSA)
at 480 VAC
(UL)
at 600 VAC
(CSA)
at 480 VAC (UL)
ZTS4 (2)
40
50
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
150,000
150,000
150,000
150,000
150,000
150,000
150,000
150,000
400
400
30,000
30,000
30,000
30,000
50,000
50,000
50,000
65,000
65,000
85,000
85,000
100,000
100,000
100,000
100,000
22,000
22,000
22,000
22,000
42,000
42,000
42,000
50,000
50,000
65,000
65,000
85,000
85,000
85,000
85,000
10,000
10,000
10,000
10,000
35,000
35,000
35,000
50,000
50,000
50,000
50,000
100,000
100,000
100,000
100,000
10,000
10,000
10,000
10,000
35,000
35,000
35,000
42,000
42,000
42,000
42,000
85,000
85,000
85,000
85,000
ZTS8 (2)
ZTS10 (2)
ZTS15 (2)
ZTS22 (2)
ZTS26 (2)
ZTS40 (2)
ZTS60
80
100
100
125
400
150
200
400
225
300
800
260
350
800
400
600
800
600
750
800
ZTS80
800
1000
1250
1500
2000
2500
4000
6000
1600
1600
1600
2500
2500
4000
5000
ZTS100
ZTS120
ZTS160
ZTS200
ZTS300
ZTS400
1000
1200
1600
2000
3000
4000
ZBTS10 (2)
ZBTS15 (2)
ZBTS22 (2)
ZBTS26 (2)
ZBTS40 (2)
ZBTS60
100
150
125
200
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
150,000
150,000
150,000
150,000
150,000
150,000
150,000
150,000
800
800
50,000
50,000
50,000
50,000
50,000
65,000
85,000
85,000
85,000
100,000
100,000
100,000
100,000
42,000
42,000
42,000
42,000
42,000
50,000
65,000
65,000
65,000
85,000
85,000
85,000
85,000
35,000
35,000
35,000
35,000
35,000
50,000
50,000
50,000
50,000
100,000
100,000
100,000
100,000
35,000
35,000
35,000
35,000
35,000
42,000
42,000
42,000
42,000
85,000
85,000
85,000
85,000
225
300
800
260
350
800
400
600
800
600
750
800
ZBTS80
800
1000
1250
1500
2000
2500
4000
6000
1600
1600
1600
2500
2500
4000
5000
ZBTS100
ZBTS120
ZBTS160
ZBTS200
ZBTS300
ZBTS400
1000
1200
1600
2000
3000
4000
ZTSD4 (2)
40
80
50
100
125
200
300
350
600
750
1000
1250
1500
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
N/A
800
800
50,000
50,000
50,000
50,000
50,000
50,000
50,000
65,000
65,000
85,000
85,000
42,000
42,000
42,000
42,000
42,000
42,000
42,000
50,000
N/A
35,000
35,000
35,000
35,000
35,000
35,000
35,000
50,000
50,000
50,000
50,000
35,000
35,000
35,000
35,000
35,000
35,000
35,000
42,000
N/A
ZTSD8 (2)
ZTSD10 (2)
ZTSD15 (2)
ZTSD22 (2)
ZTSD26 (2)
ZTSD40 (2)
ZTSD60 (2)
ZTSD80 (2)
ZTSD100 (2)
ZTSD120 (2)
100
150
225
260
400
600
800
1000
1200
800
800
800
800
800
800
1200
1600
1600
200,000
200,000
65,000
65,000
42,000
42,000
1. For each rating attained in above table, the heat run was
performed after the overload and endurance tests.
2. These models also listed for 100% tungsten lamp loads.
3. Consult factory for coordinated breaker types and ratings.
4. All transfer switches are rated in coordination with the protective
device installed. Lower rated devices than those shown may be
utilized and the system rated accordingly.
5. Consult the factory for IEC ratings.
Page 7 • PB-5066
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ZTS Series
Withstand Ratings
GE Zenith ZTS Switches
Rated for Total Systems or Motor Loads (1)
Withstand and Closing Current Ratings per UL 1008 and CSA
Specific Coordinated
Breaker Rating (3)
Any Molded Case
Breaker Rating
Current Limiting Fuse
UL 1008
ZTS Switch
Rating
GE Zenith
Model No.
Maximum
Maximum
Maximum
Circuit
Breaker
Size Amps
Maximum
Maximum
Maximum
Fuse Size
Amps
Maximum
Maximum
Circuit Amps
at 600 VAC (CSA)
Circuit Amps Circuit Amps
Circuit Amps Circuit Amps
Circuit Amps
at 480 VAC
(UL)
at 600 VAC
(CSA)
at 480 VAC
(UL)
at 600 VAC
(CSA)
at 480 VAC (UL)
100,000
100,000
100,000
100,000
ZTSD160 (2)
1600
2000
3000
4000
2000
2500
4000
6000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
2500
2500
4000
5000
100,000
100,000
100,000
100,000
85,000
85,000
85,000
85,000
85,000
85,000
85,000
85,000
ZTSD200 (2)
ZTSD300 (2)
ZTSD400 (2)
ZTSCT10 (2)
ZTSCT15 (2)
ZTSCT22 (2)
ZTSCT26 (2)
ZTSCT40 (2)
ZTSCT60
100
150
750
750
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
150,000
150,000
150,000
150,000
150,000
150,000
N/A
800
800
65,000
65,000
65,000
65,000
65,000
65,000
65,000
85,000
85,000
100,000
100,000
100,000
100,000
50,000
50,000
50,000
50,000
50,000
50,000
N/A
50,000
50,000
50,000
50,000
50,000
50,000
50,000
50,000
50,000
100,000
100,000
100,000
100,000
42,000
42,000
42,000
42,000
42,000
42,000
N/A
220
750
800
260
750
800
400
750
800
600
750
800
ZTSCT80
800
1000
1250
1500
2000
2500
4000
6000
1200
1600
1600
2500
2500
4000
5000
ZTSCT100
ZTSCT120
ZTSCT160
ZTSCT200
ZTSCT300
ZTSCT400
1000
1200
1600
2000
3000
4000
150,000
150,000
150,000
150,000
150,000
150,000
65,000
65,000
85,000
85,000
85,000
85,000
42,000
42,000
85,000
85,000
85,000
85,000
ZBTSD10 (2)
ZBTSD15 (2)
ZBTSD22 (2)
ZBTSD26 (2)
ZBTSD40 (2)
ZBTSD60
100
150
125
200
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
150,000
150,000
150,000
150,000
150,000
150,000
150,000
150,000
800
800
50,000
50,000
50,000
50,000
50,000
65,000
85,000
85,000
85,000
100,000
100,000
100,000
100,000
42,000
42,000
42,000
42,000
42,000
50,000
65,000
65,000
65,000
85,000
85,000
85,000
85,000
35,000
35,000
35,000
35,000
35,000
50,000
50,000
50,000
50,000
100,000
100,000
100,000
100,000
35,000
35,000
35,000
35,000
35,000
42,000
42,000
42,000
42,000
85,000
85,000
85,000
85,000
225
300
800
260
350
800
400
600
800
600
750
800
ZBTSD80
800
1000
1250
1500
2000
2500
4000
6000
1600
1600
1600
2500
2500
4000
5000
ZBTSD100
ZBTSD120
ZBTSD160
ZBTSD200
ZBTSD300
ZBTSD400
1000
1200
1600
2000
3000
4000
ZBTSCT10 (2)
ZBTSCT15 (2)
ZBTSCT22 (2)
ZBTSCT26 (2)
ZBTSCT40 (2)
ZBTSCT60
100
150
750
750
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
200,000
150,000
150,000
150,000
150,000
150,000
150,000
150,000
150,000
150,000
150,000
150,000
150,000
150,000
800
800
65,000
65,000
65,000
65,000
65,000
65,000
85,000
85,000
85,000
100,000
100,000
100,000
100,000
50,000
50,000
50,000
50,000
50,000
50,000
65,000
65,000
65,000
85,000
85,000
85,000
85,000
50,000
50,000
50,000
50,000
50,000
50,000
50,000
50,000
50,000
100,000
100,000
100,000
100,000
42,000
42,000
42,000
42,000
42,000
42,000
42,000
42,000
42,000
85,000
85,000
85,000
85,000
225
750
800
260
750
800
400
750
800
600
750
800
ZBTSCT80
800
1000
1250
1500
2000
2500
4000
6000
1600
1600
1600
2500
2500
4000
5000
ZBTSCT100
ZBTSCT120
ZBTSCT160
ZBTSCT200
ZBTSCT300
ZBTSCT400
1000
1200
1600
2000
3000
4000
PB-5066 • Page 8
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ZTS Series
Dimensional Specifications / Power ConnectionTerminals
ZTS ModelTransfer Switches
NEMA 1 Enclosed
Width Depth
(B) (C)
Weight
Ampere
Rating
Poles
Application Notes
Height
(A)
Reference
Figure
Open
Type
NEMA 1
40, 80
100, 150
2, 3
4
24 (61)
24 (61)
18 (46)
18 (46)
11.13 (28)
11.13 (28)
A
A
21 (10)
24 (11)
57 (26)
60 (27)
1 – 7
1 – 7
1 – 8
1 – 8
1 – 8
1 – 10
1 – 10
225
260, 400
2, 3
4
46 (117)
46 (117)
66 (168)
74 (188)
24 (61)
24 (61)
24 (61)
30 (76)
14.13 (36)
14.13 (36)
19.75 (50)
19.75 (50)
A
A
B
B
70 (32)
75 (34)
165 (75)
170 (68)
380 (172)
430 (195)
2, 3
4
165 (75)
185 (84)
600
2, 3
4
74 (188)
74 (188)
30 (76)
40 (102)
19.75 (50)
19.75 (50)
B
B
190 (86)
210 (95)
455 (206)
540 (245)
800, 1000, 1200
1600
2000
3
4
90 (229)
90 (229)
30 (76)
36 (91)
48 (122)
48 (122)
C
C
345 (156)
450 (204)
1010 (458)
1160 (526)
3
4
90 (229)
90 (229)
30 (76)
36 (91)
48 (122)
48 (122)
C
C
465 (211)
670 (304)
1130 (513)
1395 (633)
3000
3
4
90 (229)
90 (229)
40 (102)
46.5 (118)
60 (152)
60 (152)
C
C
770 (349)
1025 (465)
1595 (723)
1850 (839)
4000
Application Notes:
C
B
C
B
1. Metric dimensions (cm) and weights (Kg) shown in parenthesis adjacent
to English measurements in inches and pounds.
2. Includes 1.25" door projection beyond base depth. Allow a minimum of 3"
additional depth for projection of handle, light, switches, pushbuttons, etc.
3. All dimensions and weights are approximate and subject to change
without notice.
A
A
4. Special enclosures (NEMA 3R, 4, 12, etc.) dimensions and layout may differ.
Consult the GE Zenith factory for details.
5. Normal and emergency may be ordered inverted on any switch.
The load may be inverted 600-1200 amps. Consult the factory for details.
6. Special lug arrangements may require different enclosure dimensions.
For certified drawings, contact the GE Zenith factory.
Figure A
7. Packing materials must be added to weights shown. Allow 15% additional
Figure B
weight for cartons, skids, crates, etc.
8. Add 4" in height for removable lifting lugs.
9. Lug adapters for 3000-4000 amp limits may be staggered length for ease
of entrance. Consult the GE Zenith factory for details.
10. Ventilation louvers on both sides of enclosure at 3000 and 4000 amps.
One must be clear for airflow with standard cable connections.
Figure C
AL-CU UL Listed Solderless
Screw-TypeTerminals for
External Power Connections
Switch
Normal,
Switch
Normal
Size
Emergency,
Size
Emergency,
Notes:
Amps
& Load Terminals
Amps
& Load Terminals
Line and load terminals are located in rear and arranged for bus bar connection.
Terminal lugs are available at additional cost. Contact factory for more details.
Cables/
Pole
Wire
Ranges
Cables/
Pole
Wire
Ranges
*
40-150
225
1
1
1
1
2
#8 to 3/0 800/1000
4
#2 AWG to
600 MCM
1. Special terminal lugs and neutral bars are available at additional cost. Contact factory and advise cable sizes
and number of conductors per pole.
AWG
/1200
1600
#4 AWG to
600 MCM
2. Fully rated neutral provided on 3 phase, 4 wire system.
260
#4 AWG to
600 MCM
#4 AWG to
600 MCM
#2 AWG to
600MCM
2000
3000
4000
3. Normal and emergency may be ordered inverted on any switch. Load may be inverted 600-1200 amps. Consult the factory for details. es:
4. Lug adapters for 3000-4000 amp units may be staggered length for ease of entrance. Consult the factory for details.
400
*
600
5. Special lug arrangements may require different enclosure dimensions. For certified drawings, contact the GE Zenith factory.
Page 9 • PB-5066
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ZTS Series
Ordering Information
Z
B
0
Model/Type
Control
Panel
Config.
Ampere Switched
Enclosure
Type
Operational
Voltage
Accessories
Size
Poles
T
S
0
0
0
0
0
0
B 0
Entelli-Switch 250
Microprocessor
Control Unit
0
0
0
0
0
0
0
0
0
4
8
0
5
0
2
6
0
B
N
0
1
A B
Consult Table Below
M
M
S
E
C
S
S
P
T
X
O
E
D
E
S
S
Z
Z
Z
Z
0
40 amps
2 Poles
Utility - Generator
Type 1 Enclosed
Standard (Open Transition)
0
N
1
2
U
E
3 Poles
T
S
D
0
80 amps
Utility - Utility
Type 12 Enclosure
Delayed Transition
N
N
E
M
M
M
M
S
S
S
S
1
N
3
R
M
Manual
F
T
S
C
T
100 amps
Type 3R Enclosure
4 Poles
Closed Transition
1
P
N
0
4
150 amps
B
T
S
0
Type 4 Enclosure
2
Standard (Open Transition) w/ Bypass
S
G
200 amps
N
4
X
B
T
S
D
0
Z
2
Type 4X Enclosure
Then choose
additional
accessories
Delayed Transition w/ Bypass
225 amps
X
0
0
2
B
T
S
C
T
Z
Open Style Unit
260 amps
Closed Transition w/ Bypass
3
300 amps
A
B
Voltage
Phase Config.
Hz
0
0
0
1
4
0
1
2
2
3
3
3
3
3
3
3
4
4
4
5
5
5
5
5
5
6
6
7
7
7
7
8
8
9
9
9
9
9
0
0
1
0
1
2
3
4
5
8
0
1
2
0
1
2
5
7
8
0
1
0
1
4
5
0
2
0
1
2
3
7
120
120/240
120/208
240
208
220
1
1
3
3
3
3
3
3
3
3
3
3
3
3
3
3
1
1
3
3
3
3
1
3
3
2
1
3
3
3
3
3
2 wire
3 wire
3 wire
3 wire
3 wire
3 wire
4 wire
4 wire
4 wire
4 wire
4 wire
4 wire
4 wire
3 wire
3 wire
3 wire
3 wire
2 wire
4 wire
3 wire
4 wire
4 wire
2 wire
4 wire
3 wire
4/5 wire
2 wire
4 wire
4 wire
4 wire
4 wire
3 wire
60
60
60
60
60
50
50
60
60
60
60
60
50
60
60
50
50
60
60
60
60
60
60
60
60
60
50
60
60
50
50
60
Switch Types
• Standard: Unless otherwise noted, the standard
400 amps
6
0
0
0
switch with quick transfer will be supplied.
600 amps
8
• Delayed Transition: When ordered as the ZTSD,
the delayed transition switch offers time delay during
transfer from one position to the other. This is primarily
for transfer of large motor or inductive loads.
800 amps
120/240
110/220
139/240
120/240
120/208
127/220
127/220
480
0
1000 amps
1
1
2
2
3
2
0
• Closed Transition: When ordered as the ZTSCT,
the closed transition switch offers two basic modes
of operation. During a failure of one source or an out
of specification condition, the ZTSCT Model operates
as a standard delayed transition switch (ZTSD Model).
This sequence allows clear separation of an unreliable
source from an available one.
1200 amps
6
0
1600 amps
440
0
0
440
460
2000 amps
480
6
0
254/440
575
• Bypass: When ordered as the ZBTS, the bypass
transition switch offers a draw-out mechanism, with
electrical and mechanical interlocks for secure removal
after load bypass. In this way the transfer switch
and/or the control panel may be tested, isolated and
removed for maintenance without load interruption.
2600 amps
347/600
277/480
277
266/460
460
120/240
380
240/416
220/380
220/380
240/416
380
0
0
3000 amps
4
0
0
4000 amps
Example
ZTSCT0B0040F-N0140STD
This number string shows the correct format for a ZTS Model Automatic Transfer Switch with closed transition,
an Entelli-Switch 250 microprocessor control unit, Utility - Generator, 400 amps, 4 pole, NEMA Type 1 enclosure,
120/208V 3Ø, 4 wire, 60 Hz system with the standard group of accessories.
Note: Operating voltage must be specified at time of order.
Only the most common voltages are shown above.
GE Zenith Controls
g
A Product of GE Industrial Systems
General Electric Company
830 West 40th Street, Chicago, IL 60609 USA
773 299-6600, Fax: 630 850-6899
Contents contained in this document are subject to
change without notice. Contact GE to verify details.
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