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Westinghouse HMC3400M - Molded Case Circuit Breaker 400A 600V 3-Phase

Westinghouse
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Westinghouse HMC3400M - Molded Case Circuit Breaker 400A 600V 3-Phase The Westinghouse HMC3400M is a Seltronic family molded case circuit breaker designed for instantaneous magnetic-only protection in industrial power distribution systems. This 3-pole, 3-phase unit is rated for 400A continuous current at 600VAC, with an interrupting capacity of 50kA at 480VAC. The bolt-on connection breaker weighs 34 lb and features a compact molded case construction for panelboard or switchboard installation. It complies with applicable UL and NEMA standards for overcurrent protection in commercial and industrial environments. Typical applications include motor control centers, feeder circuits, and main disconnects requiring high fault current interruption without thermal delay.

Key Features & Specifications
  • Type: Molded Case, Seltronic family, magnetic only trip
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • Dimensions: Standard molded case frame
  • Standards: UL, NEMA
  • Applications: Industrial power distribution, motor control, feeder protection
  • Switch Type: Circuit breaker
  • Configuration: 3-pole, 3-phase
  • Coil Voltage Maximum: Not applicable (magnetic only)
  • Temp Rating: Standard industrial
  • Shipping Dimensions: Per molded case standard
  • Phase: 3
  • Voltage: 600V
  • Amperage: 400A
  • AIC rating: 50kA@480V
  • Connection: Bolt-On
  • Poles: 3
  • Protection: Magnetic Only
  • Functions: I - Instantaneous
  • Frame Size: HMC
  • Trip Type: Magnetic only
  • Panel Type: Standard industrial
  • Breaker Type: Molded case
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Not specified
  • Metal Type: Molded case
  • Panel Style: Standard
  • Bus Type: Standard
  • Fuse Class: Not applicable
  • Insulation Temperature: Standard
  • Inductance: Not applicable
  • Impedance: Not applicable
  • Barrels: Not applicable
  • Class Rating: Not applicable
  • Diameter: Not applicable
  • Velocity: Not applicable
  • Clip Center: Not applicable
  • Clas: Not applicable
  • Mounting: Bolt-On
  • Hz: 50/60
  • Coil Material: Not applicable
  • Horse Power: Not specified
  • Aux Contacts: Not specified
  • CPT: Not specified
  • Full Load Amps: 400A
  • Dist Voltage: 600V
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 400A
  • Full Load Amp Minimum: Not applicable
  • Enclosure: Open
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Not specified
  • Amperage Maximum: 400A
  • Amperage Minimum: Not applicable
  • Nema Rating: Standard
  • Switch Style: Circuit breaker
  • Wire Size: Not specified
  • Certification: UL
  • Circuit Breaker Mounting Style: Bolt-On
  • Terminal Connection: Bolt-On
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-phase
  • Standards: UL, NEMA
  • Compatible Frames: HMC
  • Installation Type: Panelboard/switchboard
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: HMC
  • Current Rating: 400A
  • Reverse Standoff Voltage: Not applicable
  • Watts: Not applicable
  • 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: Standard industrial
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


Product Identification
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