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Littelfuse 460 Three-Phase Voltage Monitor

Littelfuse 460 Three-Phase Voltage Monitor

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SKU : MSR460

In Stock Quantity:0

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Brand : Littelfuse/Symcom
$148.05 USD
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Description

Littelfuse 460 Voltage Monitor Product Description

The Model 460 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 Voltage Monitor Typical Applications

  • Fans
  • Compressors
  • HVAC
  • Heat Pumps
  • Well Pumps
  • Sump Pumps
  • Small Conveyor Motors
  • Oil Rigs

Littelfuse 460 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.

Specifications

Littelfuse 460 Voltage Monitor Specifications

3-Phase Line Voltage . . . . . . . . . . . . 190 to 480 VAC

Frequency . . . . . . . . . . . . . . . . . . . . . 50 or 60 Hz

Low Voltage (% of setpoint)

  • Trip . . . . . . . . . . . . . . . . . . . . . . . . . . 90% ±1%
  • Reset . . . . . . . . . . . . . . . . . . . . . . . . .93% ±1%

High Voltage (% of setpoint)

  • Trip . . . . . . . . . . . . . . . . . . . . . . . . . . 110% ±1%
  • Reset . . . . . . . . . . . . . . . . . . . . . . . . .107% ±1%

Voltage Unbalance (NEMA)

  • Trip . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8% adjustable
  • Reset . . . . . . . . . . . . . . . . . . . . . . . .Trip setting minus 1% (5-8%)
  • . . . . . . . . . . . . . . . . . . . . . . . . . . Trip setting minus 0.5% (2-4%)
  • 460L . . . . . . . . . . . . . . . . . . . . . . . . . . 6% UB fixed (4.5% reset)

Trip Delay Time

  • Low, High and Unbalanced Voltage. . . . . . . . . .1-30 seconds adjustable
  • 460L . . . . . . . . . . . . . . . . . . . . . . . . . . 4 seconds fixed
  • Single-Phasing Faults (>25% UB) . . . . . . . 1 second fixed

Restart Delay Time

  • After a Fault . . . . . . . . . . . . . . . . . 1-500 seconds adjustable
  • After a Complete Power Loss . . . . . . . 1-500 seconds adjustable

Output Contact Rating

  • Form C . . . . . . . . . . . . . . . . . . . . . . . . 480VA @ 240VAC, B300 Pilot Duty
  • . . . . . . . . . . . . . . . . . . . . . . . . . . . . or 10A @ 240VAC General Purpose
  • Form A & Form B . . . . . . . . . .360VA @ 240VAC, B300 Pilot Duty
  • . . . . . . . . . . . . . . . . . . . . . . . . . . . . or 8A @ 240VAC General Purpose

Temperature Range

  • Operating . . . . . . . . . . . . . . . . . -40° to 70°C (-40° to 158°F)
  • Storage . . . . . . . -40° to 80°C (-40° to 176°F)

Class of Protection . . . . . . . . . . . . . . . . . IP20, NEMA 1 (finger safe)

Maximum Input Power   . . . . . . . . . . . . . 6 Watts 

Relative Humidity . . . . . . . . . . . . . .10-95%, non-condensing per IEC 68-2-3

Terminal Torque. . . . . . 4.5 in.-lbs

Wire Type. . . . . . Stranded or Solid 12-20 AWG, One Per Terminal

Electricostatic Discharge (ESD). . . . IEC 61000-4-2, Level 3, 6kV contact, 8kV air

RFI, Radiated. . . . . . 150 MHz, 10V/m

Fast Transient Burst . . . . IEC 61000-4-4, Level 3, 3.5kV input power and controls

Surge

  • IEC . . . . . . . . . . . . . . IEC 61000-4-5, Level 3, 4kV line-to-line; Level 4, 4kV line-to-ground
  • ANSI/IEEE . . . . . . C62.41 Surge and Ring Wave Compliance to a level of 6kV line-to-line
  • Hi-Potential Test . . . . . . . . . . . . . . Meets UL508 (2 x rated V +1000V for 1 minute)

Safety Marks

  • UL. . . . . . . . . . . . . . . . . UL508 (File #E68520)
  • CE . . . . . . . . . . . . . . . . . IEC 60947-6-2
Enclosure . . . . . . . . . . . . . . . . . . . . . Polycarbonate

Weight . . . . . . . . . . . . . . . . . . . . . . . . 11.2 oz.

Mounting Method . . . . . . . . . . . 35 mm DIN rail or Surface Mount (#6 or #8 screws)

460-MR(manual reset) . . . . . . . . . . External NO pushbutton required.


WARNING Cancer and Reproductive Harm - www.P65Warnings.ca.gov WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Resources

Littelfuse 460 Voltage Monitor Resources

product-resourcesb.png

Littelfuse 460 Product Specifications

Littelfuse 460 Installation Bulletin

Littelfuse 460 Engineering Specifications

Warranty
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