Description
The Littelfuse 250A SymCom Motor Saver is a 3-phase voltage monitoring relay designed to protect motors and industrial equipment operating on 190–480VAC systems. This advanced microcontroller-based device continuously monitors voltage conditions to detect phase loss, phase reversal, voltage imbalance, undervoltage, and overvoltage. When a fault is detected, the relay de-energizes to prevent equipment damage and costly downtime. With auto-ranging capability and adjustable restart delay, it ensures reliable and flexible protection across a wide range of motor applications, including HVAC systems, pumps, and compressors. Its compact and durable design makes it ideal for control panels and industrial automation environments.
Key Features:
- 3-phase voltage monitoring relay for motor protection
- Operating range: 190–480VAC, 50/60 Hz
- Detects phase loss, phase reversal, and voltage imbalance
- Overvoltage and undervoltage protection
- Auto-ranging dual voltage capability
- Adjustable restart delay to reduce nuisance tripping
- Microcontroller-based sensing for accurate performance
- Ideal for HVAC, pumps, compressors, and industrial motors
