Description
GE CR306F002XABA
Technical Specifications
- Product Series: GE CR306 NEMA Magnetic Starters
- NEMA Size: Size 3
- Continuous Current Rating: 90 Amperes
- Voltage Rating: Up to 600V AC, 50/60 Hz
- Coil Voltage: 115-120V AC (Standard control voltage)
Functional Features
- Motor Control: Provides reliable 3-pole make-and-break contacts for motor starting and stopping.
- Overload Protection: Equipped with a 3-leg block-type thermal overload relay to protect motors from excessive current and phase loss.
- Holding Interlock: Maintains the closed circuit state even after the momentary start button is released.
- Manual Reset: Features a manual reset mechanism on the overload relay to ensure safe restart after a trip.
Application Scenarios
Widely utilized in industrial manufacturing, conveyor systems, pump stations, compressor controls, and heavy machinery motor control centers (MCCs).
Performance Parameters
- Horsepower Rating: Rated for up to 50 HP at 230V and 100 HP at 460V.
- Electrical Life: High mechanical and electrical endurance for continuous industrial duty.
Material Composition
Housed in a robust metal enclosure (NEMA Type 1, 3R, 12, or 4/4X options) with silver-alloy electrical contacts and a heavy-duty electromagnetic coil assembly.
Structural Characteristics
Features a standard NEMA open or enclosed form factor, pressure terminals for line and load connections, and external reset buttons for the overload relay.
Working Principle
When control voltage is applied to the coil, the electromagnet pulls the movable armature, closing the main power contacts to energize the motor. The thermal overload relay monitors the current and mechanically trips the circuit if a sustained overcurrent condition is detected.
Installation Requirements
- Must be mounted securely in an upright position to ensure proper thermal relay operation.
- Line and load power connections must be torqued to manufacturer specifications.
- Requires adequate ventilation to dissipate heat generated by the coil and overload heaters.
Usage Precautions
- Always de-energize the circuit before performing maintenance.
- Ensure the correct size overload heaters are installed for the specific motor full-load amps (FLA).
- Never bypass the thermal overload relay.
