QC3040H - 40 Amp Circuit Breaker

QC3040H - 40 Amp Circuit Breaker

The QC3040H is a 3-pole, 40 amp Type QC thermal magnetic circuit breaker engineered to provide dependable overcurrent and short-circuit protection in your commercial, industrial, and residential electrical distribution systems. Designed with a 10kA interrupting capacity at 240VAC, this breaker helps you safeguard electrical equipment and branch circuits against damaging fault conditions while supporting reliable system performance. Its Quicklag design, HACR rating, and cable-in/cable-out configuration make it a practical choice for a variety of panel applications where consistent circuit protection is essential. Built to operate in 40°C ambient environments, the QC3040H delivers the dependable performance electricians, contractors, and maintenance professionals expect for both new installations and replacement projects.

Key Features and Benefits

• 40 Amp Current Rating: For reliable branch circuit protection.
• 3-Pole Design: Provides simultaneous protection across three phases.
• Type QC Circuit Breaker: For compatible electrical distribution equipment.
• Thermal Magnetic Trip Mechanism: Delivers dependable protection against both overloads and short circuits.
• 10kA Interrupting Capacity at 240VAC: Helps safely interrupt fault currents.
• Quicklag Construction: Supports dependable operation in compatible systems.
• HACR Rated: For use in heating, air conditioning, and refrigeration applications where permitted.
• Cable-In/Cable-Out Configuration: Simplifies installation in compatible panelboards.
• Designed for 40°C Ambient Operation: Built for operation in 40°C ambient temperatures.
  

Technical Specifications

• Part Number: QC3040H
  
• Type: QC
  
• Poles: 3
  
• Amperage: 40 Amps
  
• Voltage Rating: 240VAC
  
• Interrupting Capacity (A.I.C.): 10kA @ 240VAC
  
• Trip Mechanism: Thermal Magnetic
  
• HACR Rated: Yes
  
• Configuration: Cable-In / Cable-Out
  
• Operating Temperature: 40°C Ambient
  
• Dimensions:
  • Height: 3.75 in.
  • Width: 3.0 in.
  • Depth: 2.5 in.

Material Compliance and Certifications

• Industry Performance Requirements: The QC3040H is manufactured for use in electrical distribution systems and is designed to meet applicable industry performance requirements for its breaker class.
• HACR Rating: Its HACR rating makes it suitable for qualifying heating, ventilation, air conditioning, and refrigeration applications when installed in accordance with applicable electrical codes and manufacturer specifications. Always verify compatibility with your equipment and local code requirements before installation.
  

Where It Works Best

• The QC3040H is well suited for protecting three-phase branch circuits in commercial buildings, industrial facilities, multi-unit residential properties, and other electrical distribution systems. It is commonly used for panelboards serving HVAC equipment, motors, lighting systems, distribution circuits, and other demanding electrical loads that require reliable 40-amp, three-pole overcurrent protection. Its thermal magnetic design and HACR rating make it a dependable choice wherever consistent circuit protection and long-term performance are essential.