Model A258BM 3-Phase Monitor
The Model A258BM 3-Phase Monitor provides essential protection for industrial systems. Operating at a nominal 480VAC with an adjustment range of 380-480VAC, this device safeguards equipment by detecting phase loss, low voltage, and phase reversal. Its MANUAL reset type ensures deliberate system restarts following an event. With a low power consumption of 3.7W and a rapid response time of 50ms drop out, it offers efficient and timely fault detection. The unit's output contacts are SPDT 10 amps at 240VAC resistive, supporting reliable control circuit integration. An expected mechanical relay life of 10 million operations and an electrical life of 100,000 operations at rated load underscore its long-term durability. This monitor is designed for consistent performance across an operating temperature range of -20° to +131° F, ensuring operational integrity in varied industrial settings.
3Ph Pm Mnl Reset
Specifications
| Reset Type | MANUAL Reset |
|---|---|
| Nominal AC voltage (phase to phase) | 480VAC |
| Case Color | Red |
| Adjustment range | 380-480VAC |
| Frequency | 60Hz |
| Power consumption | 3.7W |
| Protection Feature | Detects phase loss, low voltage, phase reversal |
| Warranty | Five year unconditional warranty |
| Transient protection | 2500VAC for 10ms |
| Repeat accuracy | ± 0.1% of set point (fixed conditions) |
| Response time | 50ms drop out |
| Dead band | Approx. 2% |
| Output contacts | SPDT 10 amps at 240VAC resistive |
| Expected relay life (Mechanical) | 10 million operations |
| Expected relay life (Electrical) | 100,000 operations at rated load |
| Operating temperature | -20° to +131° F |
| Humidity tolerance | 0-97% w/o condensation |
| Enclosure material | ABS plastic cover |
| Mounting | 8-pin socket (**sold separately) |
| Agency approvals | UL Recognized* and CSA Certified |
