Description
The Littelfuse 355200 is a precision 3-phase voltage monitor and protection relay engineered to keep your electrical systems running safely within the 190–240V range. By continuously tracking live voltage conditions, it instantly identifies dangerous faults — including phase loss, phase reversal, and voltage imbalance — before they cause costly equipment failures or unplanned downtime. Whether protecting motors, compressors, pumps, or industrial machinery, the 355200 delivers the dependable, around-the-clock oversight your systems demand. Its rugged construction stands up to harsh industrial environments, while its straightforward design makes integration into existing control panels fast and hassle-free.
Key Features
- Monitors three-phase electrical systems operating within the 190–240V range
- Detects phase loss, phase reversal, and voltage imbalance in real time
- Protects motors, compressors, and industrial machinery from voltage-related damage
- Delivers reliable, accurate monitoring performance in demanding environments
- Rugged, durable construction built for industrial-grade applications
- Simple installation with easy integration into control panels and systems







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