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Westinghouse HKA3070W - Molded Case 70A 600V 3-Pole Breaker

Westinghouse
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The Westinghouse HKA3070W is a three-pole molded case circuit breaker from the MARK 75 family, designed for overcurrent protection in industrial power distribution systems. It is rated for 70A continuous current at 600VAC with a 35kA interrupting capacity at 480V, utilizing a thermal-magnetic trip mechanism for LI (Long-Time and Instantaneous) protection functions. This bolt-on unit weighs 19 lb and features a compact molded case construction suitable for panelboard or switchboard installation. The breaker complies with applicable UL and NEMA standards for industrial electrical safety and performance. Typical applications include motor control centers, lighting panels, and feeder circuits in manufacturing plants and commercial facilities.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic
  • Voltage Rating: 600V
  • Current Rating: 70A
  • Dimensions: Standard molded case frame size
  • Standards: UL, NEMA
  • Applications: Industrial power distribution, motor control, feeder circuits
  • Switch Type: Circuit breaker
  • Configuration: Three-pole
  • Coil Voltage Maximum: Not applicable (thermal-magnetic)
  • Temp Rating: Standard industrial
  • Shipping Dimensions: Standard molded case packaging
  • Phase: 3
  • Voltage: 600V
  • Amperage: 70A
  • AIC rating: 35kA@480V
  • Connection: Bolt-On
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: MARK 75
  • Trip Type: Thermal-magnetic
  • Panel Type: Standard industrial panelboard
  • Breaker Type: HKA
  • 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: Standard
  • 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: 70A
  • Dist Voltage: 600V
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 70A
  • Full Load Amp Minimum: 70A
  • Enclosure: Open
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Not specified
  • Amperage Maximum: 70A
  • Amperage Minimum: 70A
  • Nema Rating: Standard
  • Switch Style: Circuit breaker
  • Wire Size: Not specified
  • Certification: UL, NEMA
  • Circuit Breaker Mounting Style: Bolt-On
  • Terminal Connection: Bolt-On
  • Frequency Rating: 50/60 Hz
  • Phase Connection: Three-phase
  • Standards: UL, NEMA
  • Compatible Frames: MARK 75
  • Installation Type: Panelboard
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: MARK 75
  • Current Rating: 70A
  • 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
  • UPC: Not available
  • GTIN: Not available