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Square D Q1B3701021 - 70A 3-Pole Molded Case Breaker

Square D
Price
Save $-522.70
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Condition
  • Low stock - 7 items left
  • Backordered, shipping soon
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Square D Q1B3701021 is a three-pole molded case circuit breaker designed for overcurrent protection in industrial power distribution systems. It provides a 70A current rating at 240V AC with a 10kA interrupting capacity, utilizing thermal magnetic protection for both long-time and instantaneous fault response. This bolt-on unit weighs 2 lb and features a compact Q1B frame construction for reliable performance in panelboards. It complies with industry standards for molded case circuit breakers, ensuring safe operation in commercial and light industrial environments. Typical applications include branch circuit protection in lighting panels, motor control centers, and distribution boards requiring 3-phase, 240V service.

Key Features & Specifications
  • Type: Q1B Series Molded Case Circuit Breaker, thermal magnetic operation
  • Voltage Rating: 240V AC
  • Current Rating: 70A
  • Dimensions: Standard Q1B frame size
  • Standards: UL 489, CSA certified
  • Applications: Branch circuit protection in 3-phase 240V industrial and commercial panels
  • Switch Type: Toggle
  • Configuration: Fixed mount
  • Coil Voltage Maximum: Not applicable (thermal magnetic)
  • Temp Rating: 40°C ambient
  • Shipping Dimensions: 4.0 x 3.0 x 2.0 in
  • Phase: 3
  • Voltage: 240V
  • Amperage: 70A
  • AIC rating: 10kA@240V
  • Connection: Bolt-On
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: Q1B
  • Trip Type: Fixed thermal and magnetic
  • Panel Type: Standard load center
  • Breaker Type: Molded Case
  • Control Voltage Minimum: N/A
  • Control Voltage Maximum: N/A
  • MCM Size: N/A
  • Metal Type: Steel and copper
  • Panel Style: Bolt-on
  • Bus Type: Aluminum or copper
  • Fuse Class: N/A
  • Insulation Temperature: 105°C
  • Inductance: N/A
  • Impedance: N/A
  • Barrels: N/A
  • Class Rating: N/A
  • Diameter: N/A
  • Velocity: N/A
  • Clip Center: N/A
  • Clas: N/A
  • Mounting: Bolt-on
  • Hz: 50/60
  • Coil Material: N/A
  • Horse Power: N/A
  • Aux Contacts: No
  • CPT: No
  • Full Load Amps: 70A
  • Dist Voltage: 240V
  • Bucket Size: N/A
  • Bucket Style: N/A
  • Bucket Type: N/A
  • Full Load Amp Maximum: 70A
  • Full Load Amp Minimum: 70A
  • Enclosure: Open
  • Relay Style: N/A
  • Coil Voltage Minimum: N/A
  • Wire: Copper
  • Amperage Maximum: 70A
  • Amperage Minimum: 70A
  • Nema Rating: N/A
  • Switch Style: Toggle
  • Wire Size: 14 AWG to 2 AWG
  • 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
  • Compatible Frames: Q1B
  • Installation Type: Fixed
  • Item QTY: 1
  • Nema Starter Size: N/A
  • Breaker Frame: Q1B
  • Current Rating: 70A
  • 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


Product Identification
  • UPC: 785901370102
  • GTIN: 00785901370102