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Siemens MBKQJ1125A - 1-Pole 100A Circuit Breaker (120/240V)

Siemens
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Siemens MBKQJ1125A is a molded case circuit breaker designed for primary overcurrent and short-circuit protection in electrical distribution systems. It is rated for 120/240V AC and 100A continuous current, with a 25kA interrupting capacity at 240V AC. The unit features a 1-inch wide, plug-in mounting style with a thermal-magnetic trip mechanism and a 10,000 AIC rating, housed in a compact 14.961 x 8.268 x 9.843 inch enclosure weighing 5.512 lb. It complies with UL 489 and CSA C22.2 standards for industrial safety and performance. This breaker is suited for use in Siemens load centers, panelboards, and commercial or light industrial applications requiring reliable branch circuit protection.

Key Features & Specifications
  • Type: Molded case circuit breaker, thermal-magnetic trip, plug-in mounting
  • Voltage Rating: 120/240V AC
  • Current Rating: 100A
  • Dimensions: 14.961 x 8.268 x 9.843 inch
  • Standards: UL 489, CSA C22.2
  • Applications: Branch circuit protection in load centers and panelboards
  • Switch Type: Toggle
  • Configuration: 1-pole
  • Coil Voltage Maximum: Not applicable (thermal-magnetic)
  • Temp Rating: 40°C ambient
  • Shipping Dimensions: 14.961 x 8.268 x 9.843 inch
  • Phase: Single
  • Voltage: 120/240V AC
  • Amperage: 100A
  • AIC rating: 10kA at 240V AC
  • Connection: Plug-in
  • Poles: 1
  • Protection: Overcurrent and short-circuit
  • Functions: Thermal-magnetic trip
  • Frame Size: 1-inch wide
  • Trip Type: Thermal-magnetic
  • Panel Type: Load center compatible
  • Breaker Type: Molded case
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Not applicable
  • Metal Type: Copper alloy contacts
  • Panel Style: Plug-on
  • Bus Type: Tin-plated copper
  • Fuse Class: Not applicable
  • Insulation Temperature: 105°C
  • Inductance: Not applicable
  • Impedance: Not applicable
  • Barrels: Not applicable
  • Class Rating: Not applicable
  • Diameter: Not applicable
  • Velocity: Not applicable
  • Clip Center: 1.0 inch
  • Clas: Not applicable
  • Mounting: Plug-in
  • Hz: 50/60
  • Coil Material: Not applicable
  • Horse Power: Not applicable
  • Aux Contacts: Not applicable
  • CPT: Not applicable
  • Full Load Amps: 100A
  • Dist Voltage: 120/240V AC
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 100A
  • Full Load Amp Minimum: 100A
  • Enclosure: Open style
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Copper or aluminum
  • Amperage Maximum: 100A
  • Amperage Minimum: 100A
  • Nema Rating: Not applicable
  • Switch Style: Toggle
  • Wire Size: #14 to #2 AWG
  • Certification: UL 489, CSA
  • Circuit Breaker Mounting Style: Plug-in
  • Terminal Connection: Screw lug
  • Frequency Rating: 50/60 Hz
  • Phase Connection: Single-phase
  • Standards: UL 489, CSA C22.2
  • Compatible Frames: Siemens load centers
  • Installation Type: Plug-on
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: 1-inch
  • Current Rating: 100A
  • 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: 40°C
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


Product Identification
  • UPC: 887621791315
  • GTIN: Not available