Description
The Littelfuse 460-L is a microcontroller-based, three-phase voltage monitoring relay engineered to protect motors, compressors, HVAC systems, and pumps from costly electrical faults. Continuously sensing all three phases across a wide 190–480V AC operating range, the 460-L instantly identifies dangerous conditions — including phase loss, phase reversal, voltage imbalance, undervoltage, and overvoltage — and disconnects the load before damage can occur. Fully adjustable trip and restart delays give you precise control over system response, eliminating nuisance trips during brief power fluctuations while ensuring equipment stays offline until stable conditions are confirmed. Whether mounted on a DIN rail or surface-installed, the 460-L delivers reliable, intelligent protection in the most demanding industrial environments.
Key Features
- Wide 190–480V AC three-phase voltage monitoring range
- Detects phase loss, phase reversal, and voltage imbalance
- Guards against undervoltage and overvoltage conditions
- Adjustable trip delay (1–30 seconds) and restart delay (1–500 seconds)
- Microcontroller-based design for precise, reliable voltage sensing
- Ideal for motors, compressors, HVAC systems, and pumps
- Flexible DIN rail or surface mount installation
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