1 1

Littelfuse 455-575 Three-Phase Voltage/Phase Monitor

Littelfuse 455-575 Three-Phase Voltage/Phase Monitor

Usually ships within 1 week

SKU : MSR455575

In Stock Quantity:0

:
Brand : Littelfuse/Symcom
$262.67 USD
Shipping calculated at checkout.

Description

Littelfuse 455-575 Voltage Monitor Product Description

The 455 Series are 3-phase voltage monitors that combine load and line side monitoring to offer complete protection. Monitoring the load side will alert the user of contactor failure or impending contactor failure. Line side monitoring will also protect the motor from damaging fault conditions that may be present prior to the motor starting. With other line/load side monitors, the motor must be started before a voltage fault is detected. With the 455, your motor is fully protected at all times.

The 455 Series are 3-phase, dual range voltage monitors that protect 190-480VAC, 50*/60Hz motors, regardless of their size. It automatically selects between the 200V and 400V range when the user selects the nominal voltage setpoint. Other adjustments include a 2-30 second trip delay, a 2-300 second restart delay (and manual restart) and a voltage unbalance trip point of 2-8%. The voltage monitor’s circuitry is powered through the line side connections, so there is no need for separate control power, making it easy to install.

Equipped with an infrared LED, the 455 Series can communicate to the optional hand-held diagnostic tool, Informer-MS to obtain valuable information such as real-time voltage, voltage unbalance on both line and load sides, motor run hours, last 20 faults, last 32 motor starts, high and low voltage trip points, voltage unbalance trip

Littelfuse 455-575 Voltage Monitor Typical Applications

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

Littelfuse 455-575 Voltage Monitor Features

  • Load Side Monitoring of Contactor: Protects Motor from Contactor Failure or Worn Contacts
  • Monitors Contactor or Starter: Prevents Rapid Cycling
  • Infrared LED Capable: Increases Personnel Safety Line of Sight Monitoring using Optional Informer-MS

Specifications

Littelfuse 455-575 Voltage Monitor Specifications

3-Phase Line Voltage . . . . . . . . . . . . 475 to 600 VAC

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

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%

Trip Delay Time

  • Low & High Voltage and Unbalance. . . . . . . . . . . . 2-30 seconds adjustable
  • Single-Phasing Faults (>25% UB) . . . . . . . 2 seconds

Restart Delay Time

  • After a Fault . . . . . . . . . . . . . . . . . Manual, 2-300 seconds adj.
  • After a Complete Power Loss . . . . . . . Manual, 2-300 seconds adj.
  • After a Motor Shut-Down . . . . . . . Manual, 2-300 seconds adj.

Output Contact Rating

  • SPDT . . . . . . . . . . . . . . . . . . . . . . . . 480VA @ 240VAC Pilot Duty
  • . . . . . . . . . . . . . . . . . . . . . . . . . . . . or 10A General Purpose
  • High Voltage Relay (-480R) . . . . . . . . . .470VA @ 600VAC Pilot Duty

Temperature Range

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

Repeat Accuracy

  • Fixed Conditions . . . . . . . . . . . . . . . . . ±0.1%

Power Consumption . . . . . . . . . . . . . 6 Watts (Max.)

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

Wire Size. . . . . . 12-18AWG

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

Safety Marks

  • UL . . . . . . . . . . . . . . . . . UL508 (File #E68520)
  • CSA . . . . . . . . . . . . . . . . . . C22.2 No. 14 (File #46510)
  • CE . . . . . . . . . . . . . . . . . IEC 60947-6-2

Weight . . . . . . . . . . . . . . . . . . . . . . . . 17.6 oz.(1.1lbs)

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

*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 455 Voltage Monitor Resources

product-resourcesb.png

Littelfuse Model 455-575 Product Specifications

Littelfuse Model 455-575 Installation Bulletin

Littelfuse Model 455-575 Engineering Specifications

Warranty
Loading...
View full details

PUMPS, WATER & WASTE WATER TREATMENT AND A WHOLE LOT MORE

Dedicated to deliver the highest quality products, and services in the water and wastewater industry, and with the help of our well-trained staff, provide a lasting value to each customer we support... read more

HELPING CUSTOMERS SINCE 1953

As time-tested specialists in water and waste water pumping systems, we are your best choice for pumps and related equipment.

  • Wastewater Treatment Systems
  • Sump Pump Systems
  • UV Water Purification & Treatment
  • Irrigation Pump Systems
  • Storm Water Lift Stations
  • Water Well Pump Systems

OUR CUSTOMERS REVIEWS