Description
GE CR305F002
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | CR305F002 |
| Alternate Catalog No. | 305F002 |
| Manufacturer | GE |
| Current Manufacturer Catalog | ABB |
| Product Family | 300-Line |
| Contactor Series | CR305 |
| Product Type | Magnetic Contactor |
| Poles | 3 |
| Phase | Three-phase |
| Operating Mode | Full-voltage, non-reversing |
| NEMA Size | 4 |
| Open Continuous Current | 150 A |
| Enclosed Current Rating | 135 A inductive |
| Maximum Voltage | 600 VAC |
| Coil Voltage | 115–120 VAC |
| Coil Frequency | 50/60 Hz |
| Main Contacts | 3NO |
| Auxiliary Contact | 1NO |
| Enclosure Type | Open |
| Mounting | Surface / panel mounting |
| Approx. Dimensions | 6.62 W × 6.5 D × 8.81 H in. |
| 3-Phase Motor Rating @ 240 VAC | 50 HP |
| 3-Phase Motor Rating @ 480 VAC | 100 HP |
| 3-Phase Motor Rating @ 600 VAC | 100 HP |
ABB’s catalog identifies the 305F002 as a three-phase, three-pole, non-reversing magnetic contactor, with a 150A continuous-current rating and open construction.Independent specification records identify the 115/120 VAC coil, NEMA Size 4, 1NO auxiliary contact, and the 50/100/100 HP ratings at 240/480/600 VAC respectively.
CR305F002
Product Introduction
The GE CR305F002 is a three-pole, NEMA Size 4 magnetic contactor in the GE 300-Line family. It is designed for full-voltage, non-reversing control of three-phase motors and other electrical loads, with a 115–120 VAC control coil and a maximum system voltage of 600 VAC. The open-frame contactor carries a 150A continuous rating under the documented open configuration.
This contactor is also suited to resistance-heating and capacitor-circuit switching where the application falls within the published contact ratings. For motor control, however, overload protection must be provided separately; the contactor itself should not be treated as the motor overload device. GE’s catalog documentation specifically describes separate overload protection for AC motor applications.
Application Scenarios & Field Pitfalls — The Engineer’s Perspective
Engineering Pain Point
When a large motor starter fails, the temptation is to specify a replacement from the current rating alone. With CR305F002, that can produce the wrong component. The coil voltage, NEMA size, open versus enclosed rating, auxiliary-contact arrangement, motor horsepower, and available mounting space all need to match the existing starter assembly.
Typical Applications
- Industrial motor starters — full-voltage starting of pumps, compressors, fans, conveyors, and other three-phase motors.
- Process equipment — non-reversing motor control where the direction is fixed by the power circuit.
- Heating equipment — switching of suitable resistance-heating loads within the contactor’s published ratings.
- Panel-built motor control assemblies — replacement of existing GE 300-Line CR305 contactors where the original enclosure and overload arrangement are retained.
Technical Pitfalls to Avoid
- Separate the 150A open rating from the 135A enclosed rating.
ABB lists 150A continuous current for the open contactor, while other catalog data identifies 135A full-load inductive current for the enclosed configuration. Do not apply the 150A figure blindly to an enclosed installation. - Verify the control voltage before energizing the coil.
CR305F002 uses a 115–120 VAC coil. A mechanically compatible CR305 variant with a different coil voltage is not an electrical substitute. - Check the overload relay separately.
The CR305F002 performs switching; motor overload protection is a separate part of the starter system. When replacing the contactor, verify that the existing overload relay range and mounting arrangement remain appropriate for the motor. - Confirm the auxiliary contact arrangement.
The documented configuration includes one normally open auxiliary contact. If the PLC, seal-in circuit, interlock, or status feedback uses additional auxiliary contacts, confirm the installed accessory arrangement before ordering.
Related Products
- GE CR305E002 — smaller CR305-family contactor; applicable where the motor/load current requirement is below the CR305F frame.
- GE CR305G002 — larger 300A-class CR305 contactor for substantially higher-current motor applications.
- GE CR305D002 — smaller CR305-family magnetic contactor for lower-current three-phase applications.
- GE CR305F001 — related CR305F configuration with a different control-coil specification; verify coil voltage before substitution.
- GE CR305F003 — related CR305F configuration using a different control arrangement; not an automatic substitute for F002.
- GE CR305F004 — CR305F-family variant that should be checked against the existing control voltage and auxiliary configuration.
- GE CR306F002 — reversing contactor/starter family member for applications requiring motor direction control; functionally different from the non-reversing .
- GE overload assemblies — separate overload protection components used with contactors when building or servicing a complete motor starter.
Procurement note: ABB’s current catalog still maps 305F002 to the alternate catalog number , so the two numbers should be treated as the same catalog identity when checking legacy documentation.For an installed starter, record the contactor nameplate, coil voltage, auxiliary contacts, overload relay model, and enclosure arrangement before approving a replacement.
