Phase Sequence/Loss Monitor, 440V, Lock Shaft Adjustable, Screw Terms, Surface Mount
Designed to protect 3-phase equipment against phase loss, under voltage and phase reversal conditions. The SLA Series sets the standard for phase monitors. With normal operating voltages applied in the proper ABC sequence, the internal relay will energize pickup. When incorrect phase sequence or phase loss occurs or the 3-phase voltages fall below the drop-out voltage, the relay will de-energize drop-out. Both Delta and Wye systems may be monitored. In Wye systems, connections to the neutral are not required.
**Protects Against:**
* Phase Loss
* Under Voltage
* Phase Reversal
**Specifications:**
* Drop-Out Voltage: Single-Phase — 83% of Nom.; 3-Phase — 90% of Nom.
* Phase Sequence: ABC Will Not Operate on CBA Sequence
* Automatic Reset
* Operating Temperature: 0°C to +55°C