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Cutler Hammer 2NK225 - 225A 3-Pole Molded Case Breaker 600V

Cutler Hammer
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Cutler Hammer 2NK225 is a heavy-duty industrial circuit breaker designed for overcurrent protection in power distribution systems. It is rated for 225 amps at 600 volts AC, providing reliable fault interruption in high-capacity electrical networks. The unit measures 27 inches in length, 4.125 inches in height, and 5 inches in width, with a weight of 7.7 pounds, featuring a robust molded case construction suitable for panelboard mounting. It complies with UL 489 and NEMA standards, ensuring safe operation under specified fault conditions. This breaker is commonly used in commercial and industrial settings for motor control centers, switchboards, and main service panels.

Key Features & Specifications
  • Type: Molded case circuit breaker, thermal-magnetic trip
  • Voltage Rating: 600 V AC
  • Current Rating: 225 A
  • Dimensions: 27 in x 4.125 in x 5 in (Length/Depth x Height x Width)
  • Standards: UL 489, NEMA AB-1
  • Applications: Power distribution, motor control, switchboard protection
  • Switch Type: Toggle
  • Configuration: 3-pole
  • Coil Voltage Maximum: 600 V AC
  • Temp Rating: 40°C ambient
  • Shipping Dimensions: 27 in x 4.125 in x 5 in
  • Phase: 3
  • Voltage: 600 V AC
  • Amperage: 225 A
  • AIC rating: 65 kA at 240 V AC
  • Connection: Line and load lugs
  • Poles: 3
  • Protection: Overcurrent and short-circuit
  • Functions: Circuit isolation and fault interruption
  • Frame Size: 225 A frame
  • Trip Type: Thermal-magnetic
  • Panel Type: Panelboard
  • Breaker Type: Molded case
  • Control Voltage Minimum: 120 V AC
  • Control Voltage Maximum: 600 V AC
  • MCM Size: 250 MCM
  • Metal Type: Copper alloy
  • Panel Style: Flush mount
  • Bus Type: Copper
  • 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
  • Coil Material: Copper
  • Horse Power: 150 HP at 480 V
  • Aux Contacts: 1 NO/NC
  • CPT: Not included
  • Full Load Amps: 225 A
  • Dist Voltage: 600 V AC
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 225 A
  • Full Load Amp Minimum: 0 A
  • Enclosure: Open style
  • Relay Style: Not applicable
  • Coil Voltage Minimum: 120 V AC
  • Wire: Copper
  • Amperage Maximum: 225 A
  • Amperage Minimum: 0 A
  • Nema Rating: 1
  • Switch Style: Toggle
  • Wire Size: 250 MCM
  • Certification: UL
  • Circuit Breaker Mounting Style: Bolt-on
  • Terminal Connection: Lug
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-phase
  • Standards: UL 489
  • Compatible Frames: CH series
  • Installation Type: Panelboard
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: 225 A
  • Current Rating: 225 A
  • 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


Product Identification
  • UPC: 078668543699
  • GTIN: 00786685436999