Square D QOB1401021 40A 1-Pole Thermal Magnetic Circuit Breaker – Bolt-On Mount – 120/240V (with Shunt Trip)

The Square D QOB1401021 is a molded case miniature circuit breaker designed for use in Square D NQ series panelboards. Built for branch circuit protection in lighting and appliance applications, it combines thermal-magnetic protection with a bolt-on mounting system and includes a VISI-TRIP indicator for quick fault identification. This model also incorporates a 120/208/240V AC shunt trip accessory for remote tripping capability.

Voltage and Rating

• Current Rating: 40 Amps
• Voltage Rating:
  • 120/240 V AC (50/60 Hz)
  • 48 V DC
• Interrupting Capacity:
  • 10 kAIC @ 120/240 V AC
  • 5 kAIC @ 48 V DC
• Number of Poles: 1-Poles
• Phase: Single-phase

Key Specifications

• Brand: Square D
• Manufacturer: Square D Co. (Schneider Electric)
• Model Number: QOB1401021
• Series: QO / QOB (Frame Type Q)
• Product Type: Miniature Molded Case Circuit Breaker
• Mounting Type: Bolt-On
• Breaker Type: Thermal Magnetic
• Application: Appliance and lighting circuits

Technical Specifications

• Trip Technology: Thermal Magnetic
• Trip Function: Standard (Long-Time and Instantaneous)
• Terminal Type: Box Lug
• Wire Size Range: 8 AWG to 2 AWG (Copper/Aluminum)
• Ambient Temperature Rating: 40°C (104°F)

Accessories and Features

• Included Feature:
  • 120/208/240V AC Shunt Trip (factory included)
• VISI-TRIP indicator for fault visibility
• Bolt-on installation for secure panelboard connection

Compatibility

• Used with Square D NQ Series Panelboards

Certifications and Standards

• UL Listed
• CSA Approved
• RoHS / REACH Compliant

Construction Features

• Frame Type: Q
• Compact design for panelboard installation
• Thermal-magnetic trip unit
• Reliable common branch circuit protection
• Visual trip indication (VISI-TRIP)

Applications

• Lighting circuits
• Appliance circuits
• Commercial panelboards
• Residential and light commercial distribution systems
• NQ panelboard branch protection
• General electrical distribution systems

Product Summary

• Product Name: Square D QOB1401021 40A 1-Pole Thermal Magnetic Circuit Breaker – Bolt-On Mount – 120/240V (with Shunt Trip)
• Current Rating: 40A
• Voltage Rating: 120/240V AC, 48V DC
• Poles: 1
• Mounting Type: Bolt-On
• Protection: Thermal Magnetic
• Interrupt Rating: 10 kAIC AC / 5 kAIC DC
• Special Feature: VISI-TRIP indicator + AC shunt trip included
• Application: Branch circuit protection for lighting and appliance loads in NQ panelboards

Returns are easy

You may return items within 30 days of delivery for a refund.

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