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Siemens QJ3B150A02 - Molded Case 150A 3-Pole (240V Thermal Magnetic)

Siemens
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Siemens QJ3B150A02 Circuit Breaker - Molded Case 150A 3-Pole (240V Thermal Magnetic) The Siemens QJ3B150A02 is a 150-amp, three-pole molded case circuit breaker from the QJ Series, designed for overcurrent protection in industrial power distribution systems. It operates at 240V AC with a 10kA interrupting capacity and employs a thermal magnetic trip mechanism providing long-time and instantaneous (LI) protection functions. This bolt-on breaker weighs 4 lb and features a compact molded case construction for secure panel mounting. It complies with industry standards for molded case circuit breakers and is suitable for three-phase applications requiring reliable branch circuit or feeder protection. Typical uses include motor control centers, distribution panels, and commercial or light industrial switchboards.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, QJ Series, Thermal Magnetic
  • Voltage Rating: 240V AC
  • Current Rating: 150A
  • Poles: 3
  • Phase: 3
  • AIC Rating: 10kA @ 240V
  • Connection: Bolt-On
  • Protection: LI - Long-Time and Instantaneous
  • Functions: Overcurrent and short-circuit protection
  • Weight: 4 lb
  • Frame Size: QJ
  • Trip Type: Thermal Magnetic
  • Breaker Type: Molded Case
  • Installation Type: Bolt-On
  • Circuit Breaker Mounting Style: Fixed
  • Terminal Connection: Bolt-On
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-Phase
  • Standards: UL 489, CSA C22.2 No. 5
  • Compatible Frames: QJ Series
  • Enclosure: Open (for panelboard use)
  • Operating Temperature Maximum Celsius: 40°C
  • Insulation Temperature: 75°C
  • Metal Type: Copper (conductors)
  • Wire Size: #14 AWG to 3/0 AWG (copper)
  • MCM Size: 250 kcmil (max)
  • Horse Power: 50 HP @ 240V (3-phase)
  • Full Load Amps: 150A
  • Amperage Maximum: 150A
  • Amperage Minimum: 150A
  • Nema Rating: NEMA AB1
  • Switch Style: Toggle
  • Configuration: 3-Pole, 3-Phase
  • Coil Voltage Minimum: N/A (thermal magnetic)
  • Coil Voltage Maximum: N/A (thermal magnetic)
  • Temp Rating: 40°C ambient
  • Shipping Dimensions: 6.5" x 4.5" x 3.5"
  • Item QTY: 1
  • Breaker Frame: QJ
  • Current Rating: 150A
  • Reverse Standoff Voltage: N/A
  • Watts: N/A
  • Peak Pulse Current: N/A
  • Breakdown Voltage (MIN VBR@IT ) (V): N/A
  • Breakdown Voltage (VBR@IT) (V): N/A
  • Polarity: N/A
  • Operating Temperature Maximum Celsius: 40°C
  • Max Clamp Voltage: N/A
  • On-State Current: N/A
  • Bucket Size: N/A
  • Bucket Style: N/A
  • Bucket Type: N/A
  • Full Load Amp Maximum: 150A
  • Full Load Amp Minimum: 150A
  • Enclosure: Open
  • Relay Style: N/A
  • Coil Voltage Minimum: N/A
  • Wire: Copper
  • Amperage Maximum: 150A
  • Amperage Minimum: 150A
  • Nema Rating: NEMA AB1
  • Switch Style: Toggle
  • Wire Size: #14 AWG to 3/0 AWG
  • Certification: UL 489, CSA
  • Circuit Breaker Mounting Style: Bolt-On
  • Terminal Connection: Bolt-On
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-Phase
  • Standards: UL 489, CSA C22.2 No. 5
  • Compatible Frames: QJ Series
  • Installation Type: Bolt-On
  • Item QTY: 1
  • Nema Starter Size: N/A
  • Breaker Frame: QJ
  • Current Rating: 150A
  • Reverse Standoff Voltage: N/A
  • Watts: N/A
  • Peak Pulse Current: N/A
  • Breakdown Voltage (MIN VBR@IT ) (V): N/A
  • Breakdown Voltage (VBR@IT) (V): N/A
  • Polarity: N/A
  • Operating Temperature Maximum Celsius: 40°C
  • Max Clamp Voltage: N/A
  • On-State Current: N/A


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