Description
The Littelfuse 102A is a 3-phase voltage monitoring relay designed to protect motors and electrical equipment from harmful voltage conditions in industrial and commercial systems. Operating across a wide 190–480V range, this device continuously monitors phase voltage to detect faults such as phase loss, phase reversal, undervoltage, and overvoltage conditions. When an abnormal condition is detected, the relay quickly disconnects the load to prevent equipment damage and downtime. Its compact design and reliable solid-state monitoring make it ideal for use in HVAC systems, pumps, compressors, and industrial motor control applications where dependable voltage protection is essential.
Key Features:
- 3-phase voltage monitoring protection relay
- Operating range: 190–480V
- Detects phase loss, phase reversal, and voltage imbalance
- Overvoltage and undervoltage protection
- Fast response to fault conditions
- Compact and durable industrial design
- Ideal for motors, pumps, HVAC, and automation systems
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