Digital guide
You are here:
GE IC2812B107DA
- Product Name: GE IC2812 Series Synchronous Motor Field Contactor (Form B107DA)
- Overview: A heavy-duty, clapper-type DC field contactor specifically designed for synchronous motor applications. It applies and removes field excitation through two normally open poles and inserts discharge resistance through one normally closed pole. The overlap between NO and NC poles prevents the buildup of high induced voltages in the motor field when excitation is removed.
Detailed content
- Technical Specifications:
- Current Rating: 100–265 A
- Coil Voltage (as ordered B107DA): 220/230 V DC
- Pole Configuration: 3 normally open and 3 normally closed poles
- Blowout: Each pole equipped with a blowout coil
- Arc Chute: Non-asbestos, removable for contact tip inspection
- Structural Features: Clapper-type moving armature; correct contact wipe keeps tips clean; blowout coils rapidly extinguish arcs within the chute.
- Functional Features: Extremely fast-acting; pole overlap guarantees no high induced voltage; heavy-duty industrial construction for long service life.
- Applications: Synchronous motor field excitation control; industrial motor control centers; generator excitation systems; heavy machinery requiring high-current switching.
- Installation Requirements: Panel-mounted; control wiring and power cable entries must be properly sized to avoid overheating; all electrical codes and safety standards must be followed when wiring coil and contact paths.
- Usage Notes: Periodically inspect contact surfaces for pitting or wear; check coil insulation and wiring integrity; replace the contactor if excessive heat, noise, or electrical arcing is observed.
