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ABB 420P7W - Molded Case Circuit Breaker 420A 600VAC

United Fuses
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ABB 420P7W is a 420A 600VAC/250VDC industrial circuit breaker designed for primary overcurrent and short-circuit protection in high-power electrical distribution systems. This molded case switch features a 3-pole configuration with a 65kAIC at 480VAC, utilizing a thermal-magnetic trip mechanism for reliable overload and fault interruption. The unit weighs 5.19 lb and is constructed with a compact frame for panelboard mounting, supporting copper or aluminum conductors up to 500 MCM. It complies with UL 489 and CSA C22.2 standards, ensuring robust performance in commercial and industrial environments. Typical applications include main service disconnects, feeder protection, and motor branch circuits in manufacturing plants, data centers, and heavy machinery installations.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Trip
  • Voltage Rating: 600VAC / 250VDC
  • Current Rating: 420A
  • Dimensions: Compact frame size for panelboard mounting
  • Standards: UL 489, CSA C22.2
  • Applications: Main service disconnects, feeder protection, motor branch circuits
  • Switch Type: Thermal-Magnetic
  • Configuration: 3-Pole
  • Coil Voltage Maximum: Not applicable (thermal-magnetic)
  • Temp Rating: 40°C ambient
  • Shipping Dimensions: Not specified
  • Phase: 3-Phase
  • Voltage: 600VAC / 250VDC
  • Amperage: 420A
  • AIC rating: 65kAIC at 480VAC
  • Connection: Line/Load lugs
  • Poles: 3
  • Protection: Overcurrent and short-circuit
  • Functions: Overload and fault interruption
  • Frame Size: Compact
  • Trip Type: Thermal-Magnetic
  • Panel Type: Panelboard
  • Breaker Type: Molded Case
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Up to 500 MCM
  • Metal Type: Copper or Aluminum
  • Panel Style: Industrial
  • Bus Type: Not specified
  • Fuse Class: Not applicable
  • Insulation Temperature: 105°C
  • Inductance: Not specified
  • Impedance: Not specified
  • Barrels: Not applicable
  • Class Rating: Not applicable
  • Diameter: Not applicable
  • Velocity: Not applicable
  • Clip Center: Not applicable
  • Clas: Not applicable
  • Mounting: Panelboard
  • Hz: 50/60 Hz
  • Coil Material: Not applicable
  • Horse Power: Not specified
  • Aux Contacts: Not specified
  • CPT: Not specified
  • Full Load Amps: 420A
  • Dist Voltage: 600VAC
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 420A
  • Full Load Amp Minimum: 0A
  • Enclosure: Open style
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Copper/Aluminum
  • Amperage Maximum: 420A
  • Amperage Minimum: 0A
  • Nema Rating: Not specified
  • Switch Style: Thermal-Magnetic
  • Wire Size: Up to 500 MCM
  • Certification: UL, CSA
  • Circuit Breaker Mounting Style: Panelboard
  • Terminal Connection: Lug
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-Phase
  • Standards: UL 489, CSA C22.2
  • Compatible Frames: Not specified
  • Installation Type: Fixed
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: Compact
  • Current Rating: 420A
  • Reverse Standoff Voltage: Not applicable
  • Watts: Not specified
  • 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: 40°C
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable
  • Weight: 5.19 lb


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