QO3401021 - 40A Circuit Breaker

QO3401021 - 40A Circuit Breaker

When your electrical system calls for dependable circuit protection and remote tripping capability, the QO3401021 40 Amp 3-Pole QO Plug-On Circuit Breaker delivers both in one convenient device. Designed for use in compatible QO load centers and panelboards, this breaker combines reliable overcurrent protection with an integrated 120VAC shunt trip, allowing the breaker to be opened remotely when connected to an emergency stop, fire alarm, or other control system. Rated at 40 Amps with a 10kA interrupting capacity at 240VAC, the QO3401021 is a practical solution for commercial, industrial, and demanding residential applications where safety, reliability, and system control matter. Its plug-on design helps simplify installation, while the built-in shunt trip eliminates the need for additional external components in many applications. Whether you're replacing an existing breaker or maintaining critical electrical equipment, this model is built to help keep your system operating safely and efficiently.

Key Features and Benefits

• 40 Amp current rating: For dependable branch circuit protection.
• 3-pole configuration: For three-phase electrical systems.
• 10kA A.I.C. rating at 240VAC: For reliable fault interruption.
• Integrated 120VAC shunt trip: Allows the breaker to be tripped remotely for emergency shutdown or automated control systems.
• Plug-on design: Makes installation fast and straightforward in compatible QO panels.
• Helps protect electrical equipment: From overloads and short circuits.
• Ideal for applications requiring both overcurrent protection and remote disconnect capability.
  

Technical Specifications

• Part Number: QO3401021
  
• Type: QO
  
• Mounting Style: Plug-On
  
• Poles: 3
  
• Amperage: 40 Amps
  
• Voltage Rating: 240VAC
  
• Interrupting Capacity: 10kA @ 240VAC
  
• Shunt Trip Voltage: 120VAC
  
• Dimensions:
  • Height: 3.0 in.
  • Width: 3.0 in.
  • Depth: 2.5 in.

Material Compliance and Certifications

• Designed for use: In compatible QO electrical distribution equipment.
• Industry Standards: Manufactured to meet applicable industry standards for molded case circuit breakers.
• Installation Requirements: Suitable for installations that comply with applicable local and national electrical codes. Compatibility should always be confirmed before installation, and installation should be performed by a qualified electrician.
  

Where It Works Best

• The QO3401021 is a great fit anywhere remote circuit interruption is an important part of the electrical system. You'll commonly find it used in commercial buildings, industrial facilities, manufacturing equipment, emergency shutdown systems, fire alarm interfaces, HVAC equipment, pumps, and other control applications where electrical safety and dependable operation are essential. Its combination of standard circuit protection and an integrated 120VAC shunt trip makes it an efficient solution for installations that require quick remote disconnection without sacrificing reliability.