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Westinghouse HMDL3300 - Molded Case 300A 600V 3-Pole

Westinghouse
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The Westinghouse HMDL3300 is a three-pole molded case circuit breaker from the Series C family, designed to provide overcurrent protection through thermal-magnetic trip mechanisms. It is rated for 600V AC, 300A continuous current, and delivers a 65kA interrupting capacity at 480V, with long time and instantaneous trip functions for coordinated fault response. The unit measures 18 inches in depth, 8 inches in height, and 11 inches in width, weighing 20 lb, and features a feed-thru connection configuration for straightforward installation in industrial panels. This breaker complies with industry standards for molded case circuit breakers, ensuring reliable performance in demanding environments. Typical applications include main or branch circuit protection in three-phase power distribution systems within manufacturing facilities, commercial buildings, and heavy machinery.

Key Features & Specifications
  • Type: Molded Case, Thermal Magnetic, Series C
  • Voltage Rating: 600V AC
  • Current Rating: 300A
  • Dimensions: 18 in x 8 in x 11 in (Length/Depth x Height x Width)
  • Standards: Industry standard molded case breaker compliance
  • Applications: Industrial power distribution, three-phase systems, main or branch circuit protection
  • Switch Type: Circuit Breaker
  • Configuration: Feed-Thru
  • Coil Voltage Maximum: Not specified
  • Temp Rating: Not specified
  • Shipping Dimensions: Not specified
  • Phase: 3
  • Voltage: 600V
  • Amperage: 300A
  • AIC rating: 65kA@480V
  • Connection: Feed-Thru
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: Long Time and Instantaneous Trip
  • Frame Size: Not specified
  • Trip Type: Thermal Magnetic
  • Panel Type: Not specified
  • Breaker Type: Molded Case
  • Control Voltage Minimum: Not specified
  • Control Voltage Maximum: Not specified
  • 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: Not specified
  • 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: Not specified
  • Installation Type: Not specified
  • Item QTY: Not specified
  • Nema Starter Size: Not specified
  • Breaker Frame: Not specified
  • Current Rating: 300A
  • 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: 782114586013