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QMB323MWR - Main Breaker Load Center 200A 3-Phase (120/240VAC)

United Fuses
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The QMB323MWR is a 3-pole, 200-amp main breaker load center designed for primary overcurrent protection in residential and light commercial applications. It operates at 120/240 VAC with a 22kA interrupting capacity at 240 VAC, housed in a NEMA 1 enclosure weighing 5.19 lb. The unit features a 3-phase, 4-wire configuration with a 200-amp continuous current rating and a 65kA short-circuit current rating, constructed with a tin-plated copper bus and a 14-2 AWG wire range. It complies with UL 67 and CSA C22.2 No. 29 standards for safety and performance. Typical applications include main service disconnects in multi-family dwellings, small commercial buildings, and industrial feeder panels.

Key Features & Specifications
  • Type: Main breaker load center, NEMA 1 enclosure, tin-plated copper bus
  • Voltage Rating: 120/240 VAC
  • Current Rating: 200 A continuous
  • Dimensions: 5.19 lb weight
  • Standards: UL 67, CSA C22.2 No. 29
  • Applications: Residential and light commercial main service disconnects
  • Switch Type: Main breaker
  • Configuration: 3-phase, 4-wire
  • Coil Voltage Maximum: Not applicable
  • Temp Rating: Not specified
  • Shipping Dimensions: Not specified
  • Phase: 3
  • Voltage: 120/240 VAC
  • Amperage: 200 A
  • AIC rating: 22kA at 240 VAC
  • Connection: 14-2 AWG wire range
  • Poles: 3
  • Protection: Overcurrent
  • Functions: Main service disconnect
  • Frame Size: Not specified
  • Trip Type: Thermal-magnetic
  • Panel Type: Main breaker load center
  • Breaker Type: Main breaker
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Not specified
  • Metal Type: Tin-plated copper bus
  • Panel Style: NEMA 1
  • Bus Type: Tin-plated copper
  • Fuse Class: Not applicable
  • Insulation Temperature: Not specified
  • Inductance: Not applicable
  • Impedance: Not specified
  • Barrels: Not applicable
  • Class Rating: Not specified
  • Diameter: Not applicable
  • Velocity: Not applicable
  • Clip Center: Not applicable
  • Clas: Not specified
  • Mounting: Surface or flush
  • Hz: 60
  • Coil Material: Not applicable
  • Horse Power: Not specified
  • Aux Contacts: Not applicable
  • CPT: Not applicable
  • Full Load Amps: 200 A
  • Dist Voltage: 120/240 VAC
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 200 A
  • Full Load Amp Minimum: Not specified
  • Enclosure: NEMA 1
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: 14-2 AWG
  • Amperage Maximum: 200 A
  • Amperage Minimum: Not specified
  • Nema Rating: 1
  • Switch Style: Main breaker
  • Wire Size: 14-2 AWG
  • Certification: UL, CSA
  • Circuit Breaker Mounting Style: Bolt-on
  • Terminal Connection: Lug
  • Frequency Rating: 60 Hz
  • Phase Connection: 3-phase, 4-wire
  • Standards: UL 67, CSA C22.2 No. 29
  • Compatible Frames: Not specified
  • Installation Type: Surface or flush
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: Not specified
  • Current Rating: 200 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: Not specified
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


Product Identification
  • UPC: Not specified
  • GTIN: Not specified