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Littelfuse 50R400 Single-Phase Voltage Monitor 380-480V/480V relay

Littelfuse 50R400 Single-Phase Voltage Monitor 380-480V/480V relay

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SKU : MSR50R400

In Stock Quantity:0

:
Brand : Littelfuse/Symcom
$285.20 USD
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Description

Littelfuse 50R400 Voltage Monitor Product Description

Model 50R400 Single Phase Voltage Monitor has a voltage sensing circuit which constantly monitors the single phase power for a low voltage condition. Single phase motors on fans, compressors, air conditioners, heat pumps, sump pumps, and small conveyor motors are all applicable to the Model 50R. When a harmful condition is detected the MotorSaver's output relay is deactivated after the specified trip delay. The output relay reactivates after power line conditions return to an acceptable level for the specified amount of time (Restart Delay). The trip delay prevents nuisance tripping due to rapidly fluctuating power line conditions.

Littelfuse 50R400 Voltage Monitor Typical Applications

  • Fans
  • Compressors
  • Air Conditioners
  • Heat Pumps
  • Well Pumps
  • Sump Pumps
  • Small Conveyor Motors

Littelfuse 50R400 Voltage Monitor Features

  • Protects Single-Phase Motors From:
    • Low Voltage
    • Optional High Voltage
  • Bicolor LED Indicator Light is Green in Normal Conditions and Red During Trip Conditions
  • Compact Design Saves on Precious Panel Space
  • 10A @ 240 VAC General Purpose Relay can Switch Most Loads
  • Microcontroller Based - Provides Better Accuracy and Higher Reliability than Analog Designs
  • Transient Protected to Meet IEC 1000-4-5:1995 Standards and Stand up Under Tough Conditions
  • Surface Mount with Optional DIN Rail Mountability
  • Optional Manual 2-300 sec. Variable Restart Delay
  • Optional 2-30 sec. Trip Delay
  • UL and cUL Listed
  • 5-Year Warranty
  • Made in USA

Specifications

Littelfuse 50R400 Voltage Monitor Specifications

Single-Phase Line Voltage . . . . . . . . . . . . 380-480 VAC

Frequency . . . . . . . . . . . . . . . . . . . . . 50*/60Hz

Low Voltage (% of set point)

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

Delay Time (Nominal)

  • Trip . . . . . . . . . . . . . . . . . . . . . . . . 4 seconds
  • Restart (low voltage) . . . . . . . . . . . . . . . . . 2 seconds
  • Restart (complete power loss) . . . . . . . 2 seconds

Output Contact Rating

  • (SPDT-1Form C) 50R-100, 50R200 . . . . . . . . . . . . . . 480VA @ 240VAC Pilot Duty
  • . . . . . . . . . . . . . . . . . . . . . . . . . . . . or 10A @ 240VAC General Purpose
  • 50R400. . . . . . . . . . . . . .470VA @ 600VAC Pilot Duty

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.)

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

Terminal Torque . . . . . . . . . . . . . 7 in.-lbs.

Wire Gauge . . . . . . . . . . . . . 12-18AWG

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

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

Transient Protection (Internal) . . . . . . . . IEC 61000-4-5; 1995 ±6kV

Safety Marks

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

Weight . . . . . . . . . . . . . . . . . . . . . . . . 15.68 oz.

Mounting Method . . . . . . . . . . . #8 screws

Special Options

  • Option 2: Variable Restart Delay . . . . . . . . . . . . . Manual, 2-300 seconds
  • Option 3: Variable Trip Delay . . . . . . . . . . . . . . . . 2-30 seconds
  • Option 9: High Voltage Detection Operating Points
    • Trip (% of Setpoint). . . . . . . . . . . . . 110%
    • Reset (% of Setpoint). . . . . . . . . . . . . 107%

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


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

Resources

Littelfuse 50R400 Voltage Monitor Resources

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Littelfuse 50R400 Product Specifications

Littelfuse 50R400 Installation Bulletin

Littelfuse 50R400 Engineering Specifications

Warranty
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