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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 | B263M |
| Description | Phase Monitor Relay; 3-Phase; 208/240V AC; 160...240V AC; 1C SPDT |
| Datasheet | Download Datasheet |
The TimeMark B263M 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 holds it out until it is reset by hand.
Trip points: undervoltage 160-240 V AC. Adjustment: field adjustable. Trip delay: phase loss / reversal 50 ms. Reset: manual.
Output: 1C SPDT, 10 A at 240 V AC resistive. Mounting: surface mount. Indicator: NORMAL and TRIP LED; VOLTS adjustment. Approvals: UL Recognized and CSA Certified. It operates from -7 to +55 °C.
| Category | |
| Manufacturer | TimeMark |
| Model | 263 |
| 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) | 50 ms |
| Reset Method | Manual |
| Status Indicator | NORMAL and TRIP LED; VOLTS adjustment |
| Contact Configuration | 1C SPDT |
| Output Rating | 10 A at 240 V AC resistive |
| Number of Poles | 1 |
| Mounting Type | Surface Mount |
| Dimensions | 5.5" x 3.88" plate (6.06" overall), 3.0" hole spacing, .203 dia. typ. mounting holes; depth .47" + 2.08"; Manual Reset Button (manual version only) |
| Operating Temperature (Storage) (°C) | -7...+55 |
| Approvals | UL Recognized and CSA Certified |