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Cutler Hammer 931251 - 250A 3-Pole Molded Case Breaker

Cutler Hammer
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The Cutler Hammer 931251 is a high-capacity industrial circuit breaker designed for primary overcurrent and short-circuit protection in electrical distribution systems. It is rated for 600 volts AC and 250 amps, providing robust current interruption for heavy-duty loads. This unit features a molded case construction with a compact frame size, weighing 5.19 lb, and is built for panelboard or switchboard mounting. The breaker complies with UL 489 and NEMA AB-1 standards, ensuring reliable performance in demanding environments. Typical applications include main service disconnects, feeder protection, and branch circuit protection in commercial and industrial facilities.

Key Features & Specifications
  • Type: Molded case circuit breaker, thermal-magnetic trip
  • Voltage Rating: 600 V AC
  • Current Rating: 250 A
  • Dimensions: Standard frame size for panelboard
  • Standards: UL 489, NEMA AB-1
  • Applications: Main service disconnect, feeder protection, branch circuit protection
  • Switch Type: Toggle
  • Configuration: 3-pole
  • Coil Voltage Maximum: Not applicable (thermal-magnetic)
  • Temp Rating: 40°C ambient
  • Shipping Dimensions: Standard industrial packaging
  • Phase: 3-phase
  • Voltage: 600 V AC
  • Amperage: 250 A
  • AIC rating: 25 kA at 600 V AC
  • Connection: Line and load lugs
  • Poles: 3
  • Protection: Overcurrent and short-circuit
  • Functions: Overload and short-circuit protection
  • Frame Size: Standard
  • Trip Type: Thermal-magnetic
  • Panel Type: Panelboard or switchboard
  • Breaker Type: Molded case
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Not specified
  • Metal Type: Steel and copper
  • 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: Bolt-on
  • Hz: 50/60 Hz
  • Coil Material: Not applicable
  • Horse Power: Not specified
  • Aux Contacts: Not included
  • CPT: Not included
  • Full Load Amps: 250 A
  • Dist Voltage: Not specified
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 250 A
  • Full Load Amp Minimum: Not specified
  • Enclosure: Open
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Not specified
  • Amperage Maximum: 250 A
  • Amperage Minimum: Not specified
  • Nema Rating: 1 (indoor)
  • Switch Style: Toggle
  • Wire Size: #4 AWG to 300 kcmil
  • Certification: UL, CSA
  • Circuit Breaker Mounting Style: Bolt-on
  • Terminal Connection: Line and load lugs
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-phase
  • Standards: UL 489, NEMA AB-1
  • Compatible Frames: Cutler Hammer CH series
  • Installation Type: Fixed
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: CH
  • Current Rating: 250 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: 78211462874
  • GTIN: 00782114628744