460-SP Series – Single-Phase Voltage Monitor Series - Littelfuse 460-SP Voltage Monitoring Relays Provide Superior Protection

Series: 460-SP Series – Single-Phase Voltage Monitor
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Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

The 460-SP (460-xxx-SP) series is a single-phase voltage monitor designed to protect motors from damaging power conditions. The 460-100-SP is used on 95–120 V ac, 50*/60 Hz single-phase motors, and the 460-200-SP is used on 190–240 V ac, 50*/60 Hz single-phase motors to protect them from damaging high- and low-voltage conditions. An adjustment knob allows the user to set a 1–500 second restart delay. The variable restart delay is also a power-up delay and can be utilized to stagger-start motors on the same system.

The unique microcontroller-based, voltage-sensing circuit constantly monitors the voltage 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 and a specified amount of time has elapsed (restart delay). The trip delay prevents nuisance tripping due to rapidly fluctuating power line conditions.

*Note: 50 Hz will increase all delay timers by 20 %

Features

  • Proprietary microcontroller-based circuitry
  • Fixed trip delay 4 seconds
  • Adjustable restart delay (1–500 s)
  • Advanced LED indication
  • DIN-rail or surface-mountable

Product Literature

For Technical Questions

Call +1 800-832-3873 or email us at relays@littelfuse.com 

Access specifications, certifications, check availability and order parts below

Catalog #Input
Voltage (V)		Output
Form		Termination TypeMounting MethodDimensionsWeight (lbs/g)HumidityInput AC Line Frequency (Hz)Maximum Input PowerOutput Load Rating (VA)Overvoltage Reset Voltage (%)Overvoltage Trip Voltage (%)Protection ClassRestart Delay RangeStorage Temperature (F/C)StockSamplesCompare
460-100-SP95 - 120 Vac1 Form CTorque: 6 in-lbs; Wire: Stranded or solid 12 - 20 AWG one per terminal35mm DIN rail or Surface Mount (#6 or #8 screws)3.5 H x 2.08 W x 2.35 D in. (88.9 x 52.9 x 59.7 mm)0 Kg10 - 95% non-condensing per IEC 68-2-350 / 60 (50 will increase all delay timers by 20%)6Pilot Duty: 480 VA @ 240 Vac B300; General Purpose: 10 A @ 240 Vac107%110%IP20; NEMA 1 (finger safe)1 - 500 s adjustable-40° to 80°C (-40° to 176°F)CheckOrder
460-200-SP190 - 240 Vac1 Form CTorque: 6 in-lbs; Wire: Stranded or solid 12 - 20 AWG one per terminal35mm DIN rail or Surface Mount (#6 or #8 screws)3.5 H x 2.08 W x 2.35 D in. (88.9 x 52.9 x 59.7 mm)0 Kg10 - 95% non-condensing per IEC 68-2-350 / 60 (50 will increase all delay timers by 20%)6Pilot Duty: 480 VA @ 240 Vac B300; General Purpose: 10 A @ 240 Vac107%110%IP20; NEMA 1 (finger safe)1 - 500 s adjustable-40° to 80°C (-40° to 176°F)CheckOrder
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