Description
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | IC2800Y109A2 |
| Manufacturer | General Electric (GE) |
| Product Family | IC2800 |
| Component Type | Time-delay DC contactor |
| Main Contact Configuration | 1NC |
| Current Rating | 150 A |
| Coil Voltage | 115 VDC |
| Time Delay | Adjustable, approx. 0.75–3.0 s |
| Interlock | 1NC/1NC arrangement reported |
| Switching Medium | DC |
| Typical Application | Excitation and power-generation control |
| Mounting / Mechanical Details | Verify against the installed contactor and OEM mechanical documentation |
The part is also cross-referenced in GE equipment listings as “TD_DC_CNT, 1NC, 150A, 115DC, NO/NC,” which is useful when matching an old equipment bill of material against a replacement.
Product Introduction
The GE IC2800Y109A2 is a high-current, time-delay DC contactor intended for controlled switching in industrial power and excitation circuits. Its documented configuration combines a 150 A DC contact rating, 115 VDC coil, normally closed main contact, and adjustable time-delay functionality, making it different from a conventional instantaneous DC contactor.
For engineers maintaining legacy GE excitation or generator-control equipment, the timing function is not a minor accessory. The delay can form part of the original sequencing logic, so replacing the device with a mechanically similar contactor without matching its timing and contact arrangement can change system behavior.
IC2800Y109A2
Engineering Pain Point
The difficult part of replacing an IC2800Y109A2 is usually not the 150 A rating. It is preserving the contact logic, coil voltage, time-delay behavior, and interlock arrangement simultaneously. A replacement that closes the same power circuit but has instantaneous operation, a different contact state, or a different DC coil can create an entirely different sequence during startup, shutdown, excitation transfer, or protection operation.
Typical Applications
- GE generator excitation and excitation-control systems
- Sequenced DC switching within power-generation control equipment
- High-current DC control circuits requiring intentional contact timing
- Legacy turbine/generator auxiliary control circuits where the original IC2800 contactor specification must be retained
Technical Pitfalls to Avoid
- Do not confuse coil voltage with switched-circuit voltage. The documented IC2800Y109A2 configuration specifies a 115 VDC coil; confirm the actual nameplate before energizing it.
- Do not ignore the time-delay specification. The adjustable delay is part of the functional design. A standard DC contactor is not automatically an electrical substitute.
- Check the contact state carefully. IC2800Y109A2 is cataloged with a 1NC main contact. Confirm terminal identification and auxiliary/interlock contacts against the original wiring drawings.
- Inspect the coil before installation. Older GE IC2800 equipment can have interchangeable-looking coils and contact assemblies. Coil markings and associated GE coil references should be matched to the exact contactor configuration rather than selected from appearance alone. Historical parts records specifically associate coil references such as 22D42G-series components with IC2800Y109 equipment.
Related Products
- GE IC2800Y109A3 — closely related timed DC contactor, but listed with a 230 VDC configuration rather than the 115 VDC configuration of IC2800Y109A2.
- GE IC2800Y109A4 — another IC2800Y109 variant; contact configuration and time-delay details require verification before substitution.
- GE IC2800Y109B2 — timed 150 A DC contactor with 115 VDC specification; do not assume interchangeability solely from the current and coil voltage.
- GE IC2800Y110D2 — larger 300 A timed DC contactor with a 125 VDC configuration; intended for a different current class.
- GE IC2800Y110D4 — 300 A timed DC contactor with 115 VDC configuration and interlock arrangement; not a direct 150 A replacement.
- GE IC2800A501AB23C — 100 A time-delay contactor with 115 VDC control and 1NO/1NC arrangement, representing a different contact/current configuration.
Replacement rule: For an installed , verify the coil voltage, 150 A contact rating, NC contact state, timing range, interlock arrangement, terminal layout, and mechanical dimensions against the OEM documentation and the actual installed unit before approving a substitute.
