Square D QOB2201021 20A 2-Pole Thermal Magnetic Circuit Breaker – Bolt-On Mount – 120/240V

The Square D QOB2201021 Molded Case Circuit Breaker is a dependable overcurrent protection device designed for commercial and industrial electrical distribution systems. As part of the QOB Series, this thermal-magnetic circuit breaker provides long-time overload and instantaneous short-circuit protection. Its bolt-on mounting design ensures secure installation in compatible Square D NQ and NQOD panelboards, while its common-trip mechanism enhances safety in multi-wire circuits.

Voltage and Rating

• Current Rating: 20 Amps
• Voltage Rating:
  • 120/240 V AC
  • 48 V DC
• Phase: 1-Phase
• Interrupting Capacity:
  • 10 kAIC @ 120/240 V AC
  • 5 kAIC @ 48 V DC

Key Specifications

• Brand: Square D
• Manufacturer: Schneider Electric
• Model Number: QOB2201021
• Series: QOB
• Product Type: Molded Case Circuit Breaker (MCCB)
• Number of Poles: 2-Pole
• Mounting Type: Bolt-On
• Terminal Type: Pressure Plate
• Breaker Type: Thermal Magnetic

Technical Specifications

• Trip Technology: Thermal Magnetic
• Trip Function Code: LI
• Trip Functions:
  • Long-Time Overload Protection
  • Instantaneous Short-Circuit Protection
• Trip Adjustability: Fixed
• Wire Size Range:
  • 14–8 AWG Copper
  • 14–8 AWG Aluminum
• Maximum Wire Size: 8 AWG
• Minimum Wire Size: 14 AWG
• Operating Temperature: 40°C

Compatibility

Suitable for Use With

• Square D NQ Panelboards
• Square D NQOD Panelboards

Accessories and Options

Factory Installed

• Shunt Trip
• Load Side Lugs Included

Optional Accessories

• Auxiliary Switch
• Alarm Switch
• Padlock Attachment

Certifications and Standards

• UL 489 Listed
• CSA Certified
• CSA C22.2 No. 5
• HACR Rated

Construction Features

• Common Trip Design
• Quick-Make/Quick-Break Mechanism
• Trip-Free Mechanism
• Visual Trip Indicator
• HACR Rated Construction

Features and Benefits

• Provides reliable overload and short-circuit protection.
• Common-trip operation improves circuit safety and compliance.
• Bolt-on mounting ensures secure installation and electrical performance.
• Factory-installed shunt trip allows remote tripping capability.
• Visual trip indicator enables quick status identification.
• HACR rated for HVAC and refrigeration applications.
• Compatible with a range of field-installable accessories.

Applications

• Commercial Electrical Distribution Panels
• Industrial Control Panels
• Branch Circuit Protection
• HVAC Equipment Protection
• Motor and Equipment Circuits
• Power Distribution Systems
• NQ and NQOD Panelboards

Product Summary

• Product Name: Square D QOB2201021 20A 2-Pole Thermal Magnetic Circuit Breaker – Bolt-On Mount – 120/240V
• Current Rating: 20A
• Voltage Rating: 120/240V AC, 48V DC
• Poles: 2
• Mounting Type: Bolt-On
• Protection: Thermal Magnetic
• Trip Function: Long-Time and Instantaneous (LI)
• Interrupt Rating: 10 kAIC AC, 5 kAIC DC
• Wire Size: 14–8 AWG Aluminum/Copper
• Factory-Installed Accessory: Shunt Trip
• Certifications: UL 489, CSA, HACR
• Application: Commercial and industrial branch circuit protection with remote tripping capability.

Returns are easy

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

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