Time Mark 257B 3-Phase Monitor, 3PH,208/240V
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Product details
| Management number | 222654282 | Release Date | 2026/05/04 | List Price | US$48.79 | Model Number | 222654282 | ||
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The Model 257 continuously monitors 3-phase power lines for abnormal conditions. When properly adjusted, the Model 257 monitor will detect phase loss on a loaded motor even when regenerated voltage is present. This device consists of a solid-state voltage and phase-angle sensing circuit, driving an electromechanical relay. When correct voltage and phase rotation are applied, the internal relay will energize. A fault condition will de-energize the relay. When the fault is corrected, the monitor will automatically reset (a manual reset version is also available). The Model 257 does not require a neutral connection and can be used with Wye or Delta systems. Voltage ranges are sufficiently wide to allow for proper adjustment to existing conditions. Both TRIP and NORM condition indicators are provided to aid in adjustment and system trouble-shooting.
- Nominal AC 208/240VAC
- Frequency 60hz
- Power Consumption 2.4w
- Adjusment Range 160-240VAC
- ABS Plastic Cover
| UPC | 662917001657 |
|---|---|
| Brand Name | Time Mark |
| Manufacturer | TIME MARK CORPORTION |
| Material Type | Plastic |
| Number of settings | 1 |
Bestseller ranking
Phase Monitoring Relays
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