Littelfuse/Symcom – Littelfuse 460-575 Three-Phase Voltage Monitor #MSR460575
Original price was: $133.50.$89.36Current price is: $89.36.
Description
Littelfuse 460-575 Voltage Monitor Product Description
The Model 460-575 is designed to protect 3-phase motors from damaging power conditions. The 460’s wide operating range combined with UL and CE compliance enables quick access to domestic and global markets.
A unique microcontroller-based voltage and phase-sensing circuit constantly monitors the 3-phase voltages to detect harmful power line conditions. When a harmful condition is detected, the MotorSaver’s output relay is deactivated after a specified trip delay. The output relay reactivates after power line conditions return to an acceptable level for a specified amount of time (restart delay). The trip delay prevents nuisance tripping due to rapidly fluctuating power line conditions.
The Model 460 automatically senses whether it is connected to a 190-240V, 60Hz system, a 440-480V, 60Hz system, or a 380-416V, 50Hz system. An adjustment is provided to set the nominal line voltage from 190-240 or 380-480VAC. Other adjustments include a 1-30 second trip delay, 1-500 second restart delay, and 2-8% voltage unbalance trip point.
Littelfuse 460-575 Voltage Monitor Typical Applications
- Fans
- Compressors
- HVAC
- Heat Pumps
- Well Pumps
- Sump Pumps
- Small Conveyor Motors
- Oil Rigs
Littelfuse 460-575 Voltage Monitor Features
- Protects Motor From:
- Loss of any Phase
- Low Voltage
- High Voltage
- Voltage Unbalance
- Phase Reversal
- Rapid Cycling
- Standard Surface Mount -OR-
- Opt. DIN Rail Mount
- Standard 1-500 sec. Variable Restart Delay
- Standard 2-8% adj. Voltage Unbalance Trip Point
- Standard 1-30 sec. Variable Trip Delay
- One 10 Amp General Purpose Form C Relay
- UL and cUL Listed
- 5-Year Warranty
- Made in USA
- Universal Voltage Range from 109-480VAC 50/60Hz Provide the Versatility Needed to Handle Global Applications.
- Four Adjustment Pots Provide Flexibility for a Variety of Applications.
- Diagnostic LEDs Indicate Trip Status and Make Troubleshooting a Snap.
- Microcontroller-Based Circuitry Provides Better Accuracy and Higher Reliability than Analog Designs.
- Transient Protection Meets IEEE Standards and Allows Operation Under Tough Conditions.

