3-Phase Monitor
The Model 158 3-Phase Monitor provides essential protection for industrial systems. It continuously monitors for phase loss, low voltage, and phase reversal, safeguarding critical equipment from potential damage. Compatible with both Wye and Delta systems, this monitor does not require a neutral connection, simplifying installation procedures. Its automatic reset function minimizes downtime following a fault, while a rapid 0.5-second response time ensures prompt fault detection. The device offers robust transient protection up to 2500 VRMS for 10ms and maintains a repeat accuracy of ± 0.1% of setpoint under fixed conditions. Mounting options include DIN Rail or surface mount, providing installation flexibility. A 5-year unconditional warranty underscores its reliability, making it a dependable choice for maintaining operational integrity across diverse industrial applications.
Specifications
| Config: Model | B158B, 158B, A158B, EX158B |
|---|---|
| Config: Input Voltage | 120VAC (B158B), 208/240VAC (158B), 480VAC (A158B), 380VAC (EX158B) |
| Config: Adjustment Range | 85-125VAC (B158B), 160-260VAC (158B), 380-500VAC (A158B), 300-400VAC (EX158B) |
| Config: Frequency | 60Hz (B158B, 158B, A158B), 50Hz (EX158B) |
| Config: Power Consumption (per phase) | .25W (B158B), .5W (158B), 1.5W (A158B), 1.25W (EX158B) |
| Config: Suffix | R (for 5 minute time delay option) |
| Mounting | DIN Rail or Surface Mount |
| Monitored Conditions | Phase Loss, Low Voltage, Phase Reversal |
| Warranty | 5 Year Unconditional Warranty |
| System Compatibility | Wye or Delta systems |
| Neutral Connection | Not required |
| Indicator | Front-mounted LED failure indicator |
| Indicator (R Version) | Additional LED indicator for RESTART |
| Transient Protection | 2500 VRMS of 10ms |
| Repeat Accuracy | ± 0.1% of setpoint (fixed conditions) |
| Response Time | 0.5 seconds |
| Reset Time | Short cycle restart delay - 2 seconds |
| Reset Time (R Version) | 5 minutes |
| Reset Type | Automatic |
| Dead Band | 2% |
| Output Contacts | SPDT |
| Contact Rating | 10A 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 | 97% w/o condensation |
| Enclosure Material | ABS plastic |
