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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 | 252B |
| Description | Phase Monitor Relay; 3-Phase; 208/240V AC; 160...240V AC |
| Datasheet | Download Datasheet |
The TimeMark 252B is a 3-phase monitor for 208/240 V AC, 60 Hz systems. It drops its output relay out on phase loss, phase reversal and undervoltage and resets once the fault clears.
Trip points: undervoltage 160-240 V AC. Adjustment: field adjustable. Trip delay: phase loss / reversal 0.05 s. Reset: automatic.
Output: 1 SPDT + 1 SPST-NO, 5 A at 115 V AC resistive. Mounting: plug-in, on an 8-pin octal (TimeMark 51X120 socket) base. Indicator: TRIP (red) and NORMAL (green) LEDs. Approvals: UL Recognized (U.S. & Canadian).
| Category | |
| Manufacturer | TimeMark |
| Model | 252 |
| Part Status | Discontinued |
| Monitoring Function | Phase Loss, Phase Reversal and Undervoltage |
| Number of Phases | 3-Phase |
| Input Voltage | 208/240V AC |
| Undervoltage Trip Range | 160...240V AC |
| Undervoltage Trip Adjustment | Field adjustable |
| Trip Delay - Phase Loss and Reversal (ms) | 0.05 s |
| Reset Method | Automatic |
| Status Indicator | TRIP (red) and NORMAL (green) LEDs |
| Contact Configuration | 1 SPDT + 1 SPST-NO |
| Output Rating | 5 A at 115 V AC resistive |
| Number of Poles | 2 |
| Mounting Type | Socketable |
| Termination Style | Plug In, 8 Pin (Octal) |
| Dimensions | 3.52" overall (2.88" body) x 2.44" x 1.75" |
| Socket Family | 8 Pin Octal (TimeMark 51X120 socket) |
| Approvals | UL Recognized (U.S. & Canadian) |