Contactors
CONTACTOR: GENERATOR FIELD CURRENT (GFC)
OEM PART NO. 8330937
Get in touch
Description:
Connecting the exciter generator supply to the main generator field for field excitation is the function of the GFC contactor. When circuits are finished for power operation, dynamic braking, or load testing, the contactor detects it. The EM2000 controls the GFC contactor, which senses when circuits are finished for load testing, dynamic braking, or power operation.
Specification:
- working voltage:74vdc
- Max pickup: 48vdc
- Dropout: 5-28vdc
- Contacts: 2NO 100Amps 230V AC
- Aux Interlocks: 2 NO –NC 10Amps
Applications:
For all EMD Diesel Electric Locomotives.
Note:
These contactors are available in different part no with respect to Applications and models, 8332661, 8247364, 8302169
We have a list of multiple products and part numbers available with us. Download the catalogue to find your specific part number.
CONTACTOR: STARTING-DC (ST)
OEM PART NO. 9325207
Description:
It is an electromagnetic device that is used to create and break circuits in a variety of high-current electrical circuits. The movable tips of this contactor move on the fixed tip when the coils are energized, magnetizing the core. The coil’s core demagnetizes when the current is removed, and spring action causes the movable contacts to open from the fixed contact. The EM2000 receives the same data that ASSY uses to act on No-NC logic to control the circuit.
Specification:
- Contact rating: 2000Amps
- working voltage: 74vdc
- Main contacts: 2 NO-NC
- Pickup voltage: 34 Volts
- Drop voltage: 3-16V
Applications:
For all EMD Diesel Electric Locomotives
Note:
These contactors are available with different Part Numbers with respect to rating and interlocking types. 8415485, 9315518 and 9325207.
CONTACTOR: STARTING AUXILLARY (STA)
OEM PART NO. 8482180
Description:
The working principle is as above but in the locomotive, the First to be picked up is the STA contactor. Energizing the DIO output channel accomplishes this. Since the ST contactor is picked up via the STA interlocks, this contact needs to be picked up first. The DIO module does not directly activate the STA.
Specification:
- Continuous rated current: 2 pole 30 Amps,
- Aux Interlocks: 3NO,1NC-10Amps
- Coil magnet: 66.6 ohms.
Applications:
For all EMD Diesel Electric Locomotives
CONTACTOR: GENERATOR FIELD DECAY (GFD)
OEM PART NO. 40010561
Description:
In high-voltage circuit breakers and switchgear, a field decay (GFD) contactor—also referred to as a suppression contactor—is a component used to control voltage spikes during current interruption. Severe voltage spikes can result from the collapsing magnetic field caused by the disconnecting of an inductive load, such as a motor or transformer. This field can decline gradually instead of abruptly thanks to the GFD contactor.
Specification:
- Continuous coil rating: 74V
- Coil resistance: 100OHMS,
- Pickup: 48 VDC
- Dropout: 5- 25 VDC
Applications:
For all Kinds of EMD locomotives, and others also make with respect to Applications and rating.
Look for what you need
& if you can't find it
We are Happy to find the right Parts for you