GE Industrial Solutions CR454A User Manual
Definite Purpose
Contactors & Starters
CR453A Series Contactors
CR454A Series Starters
Description
GE’s CR453A magnetic contactors provide a 2- or 3-pole
device for use in air conditioning units or other general
purpose applications. These instructions give information
about ratings, installation, accessories and wiring, overload
relay may be added if needed. Factory assembled starters
CR454A include overload relay.
Motor branch circuit and control circuit overcurrent
protection should be supplied in accordance with the
National Electrical Code or local code as required. CR453A
contactors are suitable for use on a circuit capable of
delivering not more than 5,000 RMS symmetrical amperes,
600 volts maximum when protected by fuses or a circuit
breaker having an interrupting rating not less than 5,000
RMS symmetrical amperes.
Use 75° C copper conductors only.
Ratings – Full Voltage, Non-Reversing
Frame
Ratings Resistive
Size
VAC
FLA LRA
Horsepower Rating Per
1 PH 3 PH Pole
120 150 2 –
CR453AB
240
25
150 3 7.5
35
480 125 – 10
600 100 – 10
120 180 2 –
CR453AC
240
30
180 5 10
40
480 150 – 15
600 120 – 15
120 240 3 –
CR453AD
240
40
240 7.5 10
50
480 200 – 20
600 160 – 20
Caution: Before installing in a nuclear application, determine that the product is intended for such use.
Warning: Disconnect power before installing or servicing.
Typical CR453A Series contactor
Power Terminal Tightening Torque (lbs.-in.)
Terminal Type Torque Values
Box Lug 40
Pressure Plate 20
Binding Screw 20
Contactor Installation
Before connecting to power supply:
1. Remove all packing.
2. Operate movable magnet and operating arm by
pressing down on the operating arm from the front
or side of the contactor to assure free movement.
3. Mount starter on a sturdy vertical support.
4. Make electrical connections as per wiring diagram.
For quick connect wiring, use UL recognized insulated
terminals.
Starter Installation
1. Remove all packing.
2. Motors with service factor of 1.15 or greater.
• Select overload relay as per the FLA shown in the
motor nameplate.
• Adjust the front mounted tripping current setting
dial to the motor FLA.
2. Motors with service factor less than 1.15
• Select overload relay as per the formula: Motor FLA
(shown in the motor plate) x 0.09.
• Adjust the front mounted tripping current setting dial
to the result of the above mentioned motor FLA.
3. Operate movable magnet and operating arm by pressing
down on the operating arm from the front or side of the
contactor to assure free movement.
4. Mount starter on a sturdy vertical support.
5. Make electrical connections as per wiring diagram.
For quick connect wiring, use UL recognized insulated
terminals.
6. Select the four modes by means of a front selector
lever.
7. Overload relays features tripping indicator, independent
& double break auxiliary tripping contacts (1NO+1NC)
with welding check lever.
8. Overload relay features thermal protection against
balanced overload, differential protection against
unbalanced overloads and also ambient temperature
compensation.
Mounting Hole Dimensions
Contactor Wiring Diagram
CR454A Series Starter Dimensions
1.70
43,2
.35
8,9
3.75
95,3
3.28
83,3
3.16
80,3
MOUNTING HOLES FOR
#10 SCREWS(6 PLACES)
3 PHASE LINE CONNECTION
CONTROL
L1 L2 L2
OPTIONAL
AUX
CONTACTS
VOLTAGE
M
T1 T2 T2
3 PHASE LINE CONNECTION
FRONT VIEW
OPTIONAL
AUX
CONTACTS
NOMENCLATURE
M-LINE CONTACTOR
NO-NORMALLY OPEN
NC-NORMALLY CLOSED
AUX CONTACT OPTONS
TYPE
LEFT
SIDE
C
1 SPDT
NC N
2 SPDT
NC N NC N
2 NO
1 NO-1 NC
RIGHT
SIDE
C
NC N
CC
C
NC N NCCN
13 23
24
131421
2214
33
34 44
31
32
2.25
57,0
1.12
43
43
44
3.13
79,4
1.71
43,3
28,5
.24
6,0
3.28
83,3
5.68
144,3
3.87
98,2
1.70
43,2
.27
6,9
MOUNTING HOLES FOR
#10 SCREWS(6 PLACES)
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