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Littelfuse 460-L Three-Phase Voltage Monitor

Littelfuse 460-L Three-Phase Voltage Monitor

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SKU : MSR460L

In Stock Quantity:0

:
Brand : Littelfuse/Symcom
$143.41 USD
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Description

Littelfuse 460-L Voltage Monitor Product Description

The Model 460L is designed to protect 3-phase loads from damaging power conditions. The 460L’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 4 second trip delay. The output relay reactivates after line power conditions return to an acceptable level for a specified amount of time (Restart Delay). The trip and restart delays prevent nuisance tripping due to rapidly fluctuating line power conditions.

The Model 460L automatically senses whether it is connected to a 190-240VAC 60Hz system, a 440-480VAC 60Hz system or a 380- 416VAC 50Hz system. An adjustment is provided to set the nominal line voltage from 190-240VAC or 380-480VAC. Other adjustments include a 1-500 second restart delay.

Littelfuse 460-L Voltage Monitor Typical Applications

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

Littelfuse 460-L Voltage Monitor Features

  • Protects Motor From:
    • Loss of any Phase
    • Low Voltage
    • High Voltage
    • Voltage Unbalance
    • Phase Reversal
    • Rapid Cycling
  • Standard Surface Mount -OR-
  • DIN Rail Mount
  • Standard 1-500 sec. Variable Restart Delay
  • 6% Fixed Voltage Unbalance Trip Point
  • Low, High, Unbalanced 4 sec. Trip Delay
  • UL and cUL Listed
  • 5-Year Warranty
  • Made in USA

Specifications

Littelfuse 460-L Voltage Monitor Specifications

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

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

Low Voltage (% of set point)

  • Trip . . . . . . . . . . . . . . . . . . . . . . . . . . 90%
  • Reset . . . . . . . . . . . . . . . . . . . . . . . . . 93%

High Voltage (% of set point)

  • Trip . . . . . . . . . . . . . . . . . . . . . . . . . . 110%
  • Reset . . . . . . . . . . . . . . . . . . . . . . . . . 107%

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-Phase 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 . . . . . . . . . . . . . . . . . . . . . -20° to 70°C (-4° to 158°F)
  • Storage . . . . . . . . . . . . . . . . . . . . . -40° to 80°C (-40° to 176°F)

Power Consumption . . . . . . . . . . . . . 5 Watts (Max.)

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

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

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

Wire Gauge . . . . . . . . . . . . . Stranded or solid 12-20 AWG, one per terminal

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

Radio Frequency

  • 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-L Voltage Monitor Resources

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Littelfuse 460-L Product Specifications

Littelfuse 460-L Installation Bulletin

Littelfuse 460-L Engineering Specifications

Warranty
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