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Siemens P1X42MC250AT - 250A 3-Pole 240V

Siemens
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Siemens P1X42MC250AT Circuit Breaker - 250A 3-Pole 240V (Siemens P1X42MC250AT) The Siemens P1X42MC250AT is a 3-pole molded case circuit breaker designed for overcurrent and short-circuit protection in industrial power distribution systems. It is rated for 250 amperes at 240 volts AC, with a 25 kAIC interrupting capacity, and features a thermal-magnetic trip mechanism for reliable overload and fault response. This unit has a compact frame size of 15.748 x 38.976 x 7.48 inches, weighs 18.997 lb, and is constructed with a metal enclosure and copper bus connections for durability. It complies with UL 489 and NEMA standards, ensuring safe operation in commercial and light industrial environments. Typical applications include motor control centers, panelboards, and switchboards requiring robust branch circuit protection.

Key Features & Specifications
  • Type: Molded case circuit breaker, thermal-magnetic trip, 3-pole
  • Voltage Rating: 240 V AC
  • Current Rating: 250 A
  • Dimensions: 15.748 x 38.976 x 7.48 in
  • Standards: UL 489, NEMA
  • Applications: Industrial power distribution, motor control centers, panelboards
  • Switch Type: Toggle
  • Configuration: 3-pole, 3-phase
  • Coil Voltage Maximum: Not applicable (thermal-magnetic)
  • Temp Rating: 40°C ambient
  • Shipping Dimensions: 15.748 x 38.976 x 7.48 in
  • Phase: 3
  • Voltage: 240 V AC
  • Amperage: 250 A
  • AIC rating: 25 kAIC at 240 V AC
  • Connection: Line and load lugs
  • Poles: 3
  • Protection: Overcurrent and short-circuit
  • Functions: Thermal-magnetic trip
  • Frame Size: P1
  • Trip Type: Thermal-magnetic
  • Panel Type: NEMA 1
  • Breaker Type: Molded case
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: 250 MCM
  • Metal Type: Copper bus, steel enclosure
  • Panel Style: NEMA 1
  • Bus Type: Copper
  • Fuse Class: Not applicable
  • Insulation Temperature: 75°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: Panel mount
  • Hz: 50/60 Hz
  • Coil Material: Not applicable
  • Horse Power: 125 HP at 240 V AC
  • Aux Contacts: Not included
  • CPT: Not included
  • Full Load Amps: 250 A
  • Dist Voltage: 240 V AC
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 250 A
  • Full Load Amp Minimum: 0 A
  • Enclosure: NEMA 1
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Copper or aluminum
  • Amperage Maximum: 250 A
  • Amperage Minimum: 0 A
  • Nema Rating: NEMA 1
  • Switch Style: Toggle
  • Wire Size: 250 MCM
  • Certification: UL 489
  • Circuit Breaker Mounting Style: Panel mount
  • Terminal Connection: Line and load lugs
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-phase
  • Standards: UL 489, NEMA
  • Compatible Frames: P1
  • Installation Type: Fixed
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: P1
  • 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: 88762166271
  • GTIN: 00887621662714