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To ensure accuracy, please note that images may be representative. Refer to the product data sheet for detailed specifications.
| Manufacturer | TimeMark |
| Manufacturer Product Number | 274-5-120-A |
| Description | Current Monitor Relay; 3-Phase Overcurrent; 120V AC |
| Datasheet | Download Datasheet |
The TimeMark 274-5-120-A is a 3-phase overcurrent monitor. Its relay energizes when the current in any of the three lines rises above the trip level for longer than the trip delay.
Sensing: direct 1-5 A; external CT above 5 A (TimeMark 276). Current: 1-5 A AC per phase; to 1,000 A with matching CTs. Control supply: 120 V AC. Line: 100-130 V AC. Trip point: 1-5 A (adjustable). Hysteresis: 4% max. Trip delay: 0.2-20 s (adjustable). Reset: automatic.
Output: 1C SPDT, 10 A at 240 V AC resistive. Mounting: surface mount, screw terminals. Indicator: OVER CURRENT and TRIPPED lamps. It operates from -29 to +55 °C.
| Category | |
| Manufacturer | TimeMark |
| Model | 274 |
| Monitoring Function | 3-Phase Overcurrent |
| Sensor Type | Direct 1-5 A; external CT above 5 A (TimeMark 276) |
| Current Range | 1-5 A AC per phase; to 1,000 A with matching CTs |
| Pickup Current Setting | 1-5 A (adjustable) |
| Input Voltage | 120V AC |
| Input Operating Range | 100-130V AC |
| Trip Delay | 0.2...20 s (adjustable) |
| Hysteresis | 4% max |
| Reset Method | Automatic |
| Status Indicator | OVER CURRENT and TRIPPED lamps |
| Contact Configuration | 1C SPDT |
| Number of Poles | 1 |
| Output Rating | 10 A at 240 V AC resistive |
| Mounting Type | Surface Mount |
| Termination Style | Screw Terminal |
| Rated Power | 3 W max |
| Operating Temperature (Storage) (°C) | -29...+55 |