QCB40 - 40 Amp Circuit Breaker

QCB40 - 40 Amp Circuit Breaker

The QCB40 40 Amp Circuit Breaker is a reliable solution for protecting electrical systems that operate at 120/240 volts AC. Designed as a 2-pole breaker, it helps prevent damage caused by overloads and short circuits by quickly interrupting power when unsafe conditions occur. With a 10k A.I.C. interrupting capacity, the QCB40 is well suited for environments where fault currents can rise quickly, offering steady performance you can count on. Its practical design and consistent operation make it a solid choice for everyday electrical protection in residential, commercial, and light industrial applications.

Key Features and Benefits

• 40 Amp Overcurrent Protection – Provides dependable protection for wiring and connected equipment by responding promptly to excess current.
• 10,000 A.I.C. Rating – Safely interrupts high fault currents at 120/240 VAC, helping reduce the risk of electrical damage.
• 2-Pole Configuration – Ideal for applications requiring protection across two conductors in 120/240V systems.
• QCB Frame Design – Built with quality materials intended to handle repeated operation over time.
• Space-Saving Profile – Compact dimensions allow for a clean fit in compatible electrical panels without crowding.

Technical Specifications

• Poles: 2
• Amperage Rating: 40 Amps
• Voltage Rating: 120/240 VAC
• Interrupting Capacity: 10k A.I.C.
• Frame Type: QCB
• Dimensions:
  • Width: 1.50 in
  • Length: 4.81 in
  • Depth: 2.50 in
• Weight: 2.25 lbs

Material Compliance and Certifications

• The QCB40 Circuit Breaker is manufactured in accordance with established industry safety and quality standards. It uses tested internal components and durable construction materials designed to perform consistently under normal operating conditions. Each unit is built with attention to electrical reliability and long-term service expectations.

Where It Works Best

• This 40 amp circuit breaker is well suited for use in residential load centers, light commercial properties, and smaller industrial installations. Common applications include air conditioning systems, electric heating equipment, lighting circuits, and general-purpose branch circuits where dependable 120/240V protection is required.