455 Series - 3-Phase Voltage/Phase Monitor

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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 Sereies 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

Access specifications, certifications, check availability and order parts below

Catalog #Input
Voltage (V)
Output
Form
Termination TypeMounting MethodDimensionsWeight (lbs/g)Input AC Line Frequency (Hz)Maximum Input PowerOutput Load Rating (VA)Overvoltage Reset Voltage (%)Overvoltage Trip Voltage (%)Repeat Accuracy (%)Restart Delay RangeStorage Temperature (F/C)Trip Delay RangeStockCompare
455190 - 480 VacSPDTTorque: 7 in-lbs; Wire Size: 12 - 18 AWG#8 screws2.93 H x 5.27 W x 2.95 D in. (74.4 x 133.9 x 74.9 mm)0 Lb50 / 60 (50 will increase all delay timers by 20%)6Pilot Duty: 480 VA @ 240 Vac; General Purpose: 10 A107%110%±0.1%Manual; 2 - 300 s adjustable-40° to 80°C (-40° to 176°F)Under/Over and Unbalance Voltage: 2 - 30 s adjustable; single-Phase faults (>25%UB): 2 sCheck
455480R380 - 480 VacSPDTTorque: 7 in-lbs; Wire Size: 12 - 18 AWG#8 screws2.93 H x 5.27 W x 2.95 D in. (74.4 x 133.9 x 74.9 mm)0 Kg50 / 60 (50 will increase all delay timers by 20%)6Pilot Duty: 470 VA @ 600 Vac107%110%±0.1%Manual; 2 - 300 s adjustable-40° to 80°C (-40° to 176°F)Under/Over and Unbalance Voltage: 2 - 30 s adjustable; single-Phase faults (>25%UB): 2 sCheck
455575475 - 600 VacSPDTTorque: 7 in-lbs; Wire Size: 12 - 18 AWG#8 screws2.93 H x 5.27 W x 2.95 D in. (74.4 x 133.9 x 74.9 mm)0 Kg50 / 60 (50 will increase all delay timers by 20%)6Pilot Duty: 480 VA @ 240 Vac; General Purpose: 10 A107%110%±0.1%Manual; 2 - 300 s adjustable-40° to 80°C (-40° to 176°F)Under/Over and Unbalance Voltage: 2 - 30 s adjustable; single-Phase faults (>25%UB): 2 sCheck
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pdf icon 455 Installation Instructions

pdf icon Protection Relays and Controls Catalog

pdf icon Protection Relays and Controls Catalog - Spanish

pdf icon Protection Relays and Controls Catalog - Mandarin

pdf icon 455-480R Installation Instructions

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