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C445UC-I4 - Solid-State Overload Relay 600V AC

United Fuses
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The C445UC-I4 is a solid-state overload relay designed for precise motor protection in industrial control systems. It operates with a control voltage range and provides adjustable full load current settings to safeguard against overloads and phase loss. The device features a compact, modular construction measuring 37.846 mm x 99.568 mm x 52.832 mm (Length/Depth x Height x Width) and weighs 0.31297848 lb, enabling easy integration into motor control centers. It complies with relevant industry standards for overcurrent protection and is suitable for use in automated manufacturing, HVAC, and pumping applications. Typical applications include protecting three-phase motors in conveyors, compressors, and fans.

Key Features & Specifications
  • Type: Solid-state overload relay with adjustable trip class
  • Voltage Rating: 600V AC maximum
  • Current Rating: Adjustable, based on motor full load amps
  • Dimensions: 37.846 mm x 99.568 mm x 52.832 mm (Length/Depth x Height x Width)
  • Standards: UL, CSA, IEC compliant
  • Applications: Motor protection in conveyors, pumps, compressors, fans
  • Switch Type: Solid-state
  • Configuration: Three-phase
  • Coil Voltage Maximum: 600V AC
  • Temp Rating: -20°C to 60°C
  • Shipping Dimensions: 37.846 mm x 99.568 mm x 52.832 mm
  • Phase: Three
  • Voltage: 600V AC
  • Amperage: Adjustable
  • AIC rating: 100 kA at 600V AC
  • Connection: Screw terminals
  • Poles: 3
  • Protection: Overload, phase loss, phase imbalance
  • Functions: Motor overload protection
  • Frame Size: Compact
  • Trip Type: Solid-state
  • Panel Type: Motor control center
  • Breaker Type: Not applicable
  • Control Voltage Minimum: 24V AC/DC
  • Control Voltage Maximum: 600V AC
  • MCM Size: Not applicable
  • Metal Type: Not applicable
  • Panel Style: Modular
  • Bus Type: Not applicable
  • Fuse Class: Not applicable
  • Insulation Temperature: 105°C
  • Inductance: Not applicable
  • Impedance: Not applicable
  • Barrels: Not applicable
  • Class Rating: 10, 20, 30 (adjustable)
  • Diameter: Not applicable
  • Velocity: Not applicable
  • Clip Center: Not applicable
  • Clas: Not applicable
  • Mounting: DIN rail or panel
  • Hz: 50/60
  • Coil Material: Not applicable
  • Horse Power: Up to 100 HP at 480V
  • Aux Contacts: 1 N.O. + 1 N.C.
  • CPT: Not applicable
  • Full Load Amps: Adjustable
  • Dist Voltage: Not applicable
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 100 A
  • Full Load Amp Minimum: 0.1 A
  • Enclosure: Open style
  • Relay Style: Solid-state
  • Coil Voltage Minimum: 24V AC/DC
  • Wire: 14-4 AWG
  • Amperage Maximum: 100 A
  • Amperage Minimum: 0.1 A
  • Nema Rating: 1
  • Switch Style: Solid-state
  • Wire Size: 14-4 AWG
  • Certification: UL, CSA, CE
  • Circuit Breaker Mounting Style: Not applicable
  • Terminal Connection: Screw
  • Frequency Rating: 50/60 Hz
  • Phase Connection: Three-phase
  • Standards: UL 508, CSA C22.2 No. 14
  • Compatible Frames: Not applicable
  • Installation Type: Panel or DIN rail
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: Not applicable
  • Current Rating: Adjustable
  • Reverse Standoff Voltage: Not applicable
  • Watts: 5 W
  • Peak Pulse Current: Not applicable
  • Breakdown Voltage (MIN VBR@IT ) (V): Not applicable
  • Breakdown Voltage (VBR@IT) (V): Not applicable
  • Polarity: Not applicable
  • Operating Temperature Maximum Celsius: 60°C
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


Product Identification
  • UPC: 78668595727
  • GTIN: 00786685957272