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Siemens HE42B090 - Molded Case Breaker 90A 2-Pole 480V

Siemens
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The Siemens HE42B090 is a 90A, 2-pole molded case circuit breaker from the HE Series, designed for thermal-magnetic overcurrent protection in industrial power distribution systems. It operates at 480VAC with a 42kA interrupting capacity at 480V, providing LI (Long-Time and Instantaneous) protection for branch circuits and equipment. This bolt-on breaker weighs 5 lb and features a compact, single-phase construction suitable for panelboard and switchboard installations. It complies with UL and NEMA standards for reliable performance in demanding environments. Typical applications include motor control centers, lighting panels, and feeder circuits in manufacturing plants and commercial facilities.

Key Features & Specifications
  • Type: Molded Case, Thermal Magnetic
  • Voltage Rating: 480V
  • Current Rating: 90A
  • Dimensions: Standard molded case frame
  • Standards: UL, NEMA
  • Applications: Industrial power distribution, branch circuit protection
  • Switch Type: Circuit Breaker
  • Configuration: 2-Pole
  • Coil Voltage Maximum: Not applicable
  • Temp Rating: Standard
  • Shipping Dimensions: Standard
  • Phase: 1
  • Voltage: 480V
  • Amperage: 90A
  • AIC rating: 42kA@480V
  • Connection: Bolt-On
  • Poles: 2
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: HE
  • Trip Type: Thermal Magnetic
  • Panel Type: Standard
  • Breaker Type: Molded Case
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Not applicable
  • Metal Type: Not applicable
  • Panel Style: Standard
  • Bus Type: Not applicable
  • 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 applicable
  • Aux Contacts: Not applicable
  • CPT: Not applicable
  • Full Load Amps: 90A
  • Dist Voltage: Not applicable
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 90A
  • Full Load Amp Minimum: Not applicable
  • Enclosure: Not applicable
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Coil Voltage Maximum: Not applicable
  • Wire: Not applicable
  • Amperage Maximum: 90A
  • Amperage Minimum: Not applicable
  • Nema Rating: Standard
  • Switch Style: Not applicable
  • Wire Size: Not applicable
  • Certification: UL
  • Circuit Breaker Mounting Style: Bolt-On
  • Terminal Connection: Bolt-On
  • Frequency Rating: 50/60 Hz
  • Phase Connection: Single Phase
  • Standards: UL, NEMA
  • Compatible Frames: HE Series
  • Installation Type: Panelboard
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: HE
  • Current Rating: 90A
  • 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: Not applicable
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


Product Identification
  • UPC: Not available
  • GTIN: Not available