Thomas & Betts 54481 - Under Voltage Release 440-480VAC (Masterpact)
Thomas & Betts 54481 - Under Voltage Release 440-480VAC (Masterpact)

Thomas & Betts 54481 - Under Voltage Release 440-480VAC (Masterpact)

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Thomas & Betts 54481 is an Under Voltage Release accessory designed for the Masterpact family of circuit breakers, providing automatic tripping when voltage drops below a preset threshold. This unit operates within a control voltage range of 440 to 480 VAC, ensuring reliable protection against undervoltage conditions in industrial power systems. Weighing 5 lb, it is compatible with M and MP frame breakers, featuring a compact construction for straightforward integration into existing panelboards. The device complies with relevant industry standards for overcurrent protection and safety. Typical applications include motor control centers, switchgear, and distribution panels where voltage stability is critical.

Key Features & Specifications
  • Type: Under Voltage Release for Masterpact circuit breakers
  • Voltage Rating: 440-480 VAC
  • Current Rating: Not specified
  • Dimensions: Not specified
  • Standards: Not specified
  • Applications: Motor control centers, switchgear, distribution panels
  • Switch Type: Not specified
  • Configuration: Not specified
  • Coil Voltage Maximum: 480 VAC
  • Temp Rating: Not specified
  • Shipping Dimensions: Not specified
  • Phase: Not specified
  • Voltage: 440-480 VAC
  • Amperage: Not specified
  • AIC rating: Not specified
  • Connection: Not specified
  • Poles: Not specified
  • Protection: Undervoltage release
  • Functions: Automatic tripping on undervoltage
  • Frame Size: Not specified
  • Trip Type: Not specified
  • Panel Type: Not specified
  • Breaker Type: Masterpact
  • Control Voltage Minimum: 440 VAC
  • Control Voltage Maximum: 480 VAC
  • MCM Size: Not specified
  • Metal Type: Not specified
  • Panel Style: Not specified
  • Bus Type: Not specified
  • Fuse Class: Not specified
  • Insulation Temperature: Not specified
  • Inductance: Not specified
  • Impedance: Not specified
  • Barrels: Not specified
  • Class Rating: Not specified
  • Diameter: Not specified
  • Velocity: Not specified
  • Clip Center: Not specified
  • Clas: Not specified
  • Mounting: Not specified
  • Hz: Not specified
  • Coil Material: Not specified
  • Horse Power: Not specified
  • Aux Contacts: Not specified
  • CPT: Not specified
  • Full Load Amps: Not specified
  • Dist Voltage: Not specified
  • Bucket Size: Not specified
  • Bucket Style: Not specified
  • Bucket Type: Not specified
  • Full Load Amp Maximum: Not specified
  • Full Load Amp Minimum: Not specified
  • Enclosure: Not specified
  • Relay Style: Not specified
  • Coil Voltage Minimum: 440 VAC
  • Wire: Not specified
  • Amperage Maximum: Not specified
  • Amperage Minimum: Not specified
  • Nema Rating: Not specified
  • Switch Style: Not specified
  • Wire Size: Not specified
  • Certification: Not specified
  • Circuit Breaker Mounting Style: Not specified
  • Terminal Connection: Not specified
  • Frequency Rating: Not specified
  • Phase Connection: Not specified
  • Standards: Not specified
  • Compatible Frames: M, MP
  • Installation Type: Not specified
  • Item QTY: Not specified
  • Nema Starter Size: Not specified
  • Breaker Frame: Not specified
  • Current Rating: Not specified
  • Reverse Standoff Voltage: Not specified
  • Watts: Not specified
  • Peak Pulse Current: Not specified
  • Breakdown Voltage (MIN VBR@IT ) (V): Not specified
  • Breakdown Voltage (VBR@IT) (V): Not specified
  • Polarity: Not specified
  • Operating Temperature Maximum Celsius: Not specified
  • Max Clamp Voltage: Not specified
  • On-State Current: Not specified


Product Identification
  • UPC: 60198654481
  • GTIN: 00601986544818