BQ1C040 - 40Amp Circuit Breaker

BQ1C040 - 40 Amp Circuit Breaker

The BQ1C040 circuit breaker is a 40-amp, single-pole, bolt-on molded case circuit breaker designed for dependable branch circuit protection in 120VAC electrical distribution systems. Built on the BQ frame platform, this breaker is engineered for proper form, fit, and function in compatible panelboards requiring a bolt-on connection. With a 10kA interrupting rating at 120VAC and HACR rating for heating, air conditioning, and refrigeration equipment, the BQ1C040 helps safeguard conductors and connected equipment from overloads and short circuits. Designed for operation in 40°C ambient environments, it is suited for commercial and industrial applications where consistent circuit protection and secure mounting are required. These breakers are built to last and provide the reliable protection expected in legacy and existing electrical systems.

Key Features and Benefits

• 40 Amp Rating – Designed to provide branch circuit protection for 120VAC systems requiring a 40A breaker.
• Single-Pole Configuration – Ideal for protecting one energized conductor in standard single-phase applications.
• 10kA Interrupting Capacity @ 120VAC – Rated to safely interrupt fault currents up to 10,000 amperes.
• Bolt-On Mounting Style – Secures directly to the panelboard bus, helping ensure stable installation and proper electrical contact.
• BQ Frame Type – Engineered for compatibility with panelboards designed to accept BQ frame breakers.
• HACR Rated – Suitable for use with heating, air conditioning, and refrigeration equipment where HACR rating is required.
• 40°C Ambient Rating – Designed for standard operating conditions commonly found in electrical rooms and distribution panels.

Technical Specifications

• Part Number: BQ1C040
• Manufacturer Frame Type: BQ
• Amperage: 40A
• Poles: 1
• Voltage Rating: 120VAC
• Interrupting Rating (A.I.C.): 10kA @ 120VAC
• Mounting Type: Bolt-On
• Ambient Temperature Rating: 40°C
• HACR Rated: Yes
• Approximate Ship Weight: 1.0 lb
• Height: 3.29 in

Material Compliance and Certifications

• Industry Standards: The BQ1C040 molded case circuit breaker is manufactured to meet applicable industry standards for thermal-magnetic circuit protection and interrupting capacity.
• HACR Rating: The HACR rating confirms suitability for HVAC-related applications where required by code.
• Always verify local electrical code requirements and panel compatibility prior to installation. Installation should be performed by a qualified electrician in accordance with NEC and applicable regional regulations.

Where It Works Best

• The BQ1C040 40-amp breaker is commonly used in commercial and light industrial panelboards designed for BQ frame bolt-on breakers. It is well-suited for protecting branch circuits serving HVAC equipment, lighting circuits, receptacle circuits, and other 120VAC loads requiring a 40A single-pole breaker. Its bolt-on design makes it particularly appropriate for applications where a secure, fixed connection to the bus bar is required in existing distribution equipment.