QCR2040 - 40Amp Circuit Breaker

QCR2040 - 40Amp Circuit Breaker

The QCR2040 thermal magnetic circuit breaker is engineered to provide dependable overcurrent and short-circuit protection for a wide range of your commercial, industrial, and OEM electrical systems. Featuring a 2-pole configuration with a 40-amp rating, this breaker is designed for 120/240VAC applications and offers a 10kA interrupting capacity (A.I.C.), helping you protect electrical equipment from damaging fault conditions. Its compact footprint, 35mm DIN-rail compatibility, and rear-mounting design make installation straightforward in control panels, machinery, and other space-conscious electrical assemblies. Built for operation in 40°C ambient environments, the QCR2040 also carries an HACR rating, making it suitable for heating, air conditioning, and refrigeration equipment where compatible. With a proven thermal-magnetic trip mechanism, this breaker delivers reliable protection against sustained overloads and instantaneous short circuits, making it an excellent choice for maintaining system safety and dependable performance.

Key Features and Benefits

• 40 Amp Current Rating: 40 Amp current rating for reliable branch circuit protection.
• 2-Pole Design: 2-pole design for 120/240VAC electrical systems.
• 10kA A.I.C. Rating: 10kA A.I.C. rating provides dependable interruption of fault currents.
• Thermal Magnetic Trip Mechanism: Thermal magnetic trip mechanism protects against overloads and short circuits.
• 35mm DIN-Rail Mounting: 35mm DIN-rail mounting allows for convenient installation in control panels and industrial enclosures.
• Rear-Mounting Configuration: Rear-mounting configuration supports flexible panel layouts.
• Cable-In / Cable-Out Connection Design: Cable-in/Cable-out connection design simplifies wiring.
• HACR Rated: HACR rated for compatible HVAC, heating, air conditioning, and refrigeration applications.
• 40°C Ambient Operation: Designed for operation in 40°C ambient temperatures.
  

Technical Specifications

• Part Number: QCR2040
  
• Type: QCR
  
• Poles: 2
  
• Amperes: 40A
  
• Voltage Rating: 120/240VAC
  
• Interrupting Capacity: 10kA @ 120/240VAC
  
• Trip Unit: Thermal Magnetic
  
• Dimensions:
  • Height: 3.94 in.
  • Width: 1.00 in.
  • Depth: 2.75 in.
• Mounting: 35mm DIN-Rail, Rear-Mounting
  
• Connection Type: Cable-In / Cable-Out
  
• Ambient Temperature Rating: 40°C
  
• HACR Rated: Yes
  

Material Compliance and Certifications

• HACR Rated: HACR Rated for use in compatible heating, air conditioning, and refrigeration equipment.
• Ambient Environment: Designed for operation in 40°C ambient environments.
• Performance Requirements: Manufactured to meet the applicable performance requirements associated with its published electrical ratings and configuration.
  

Where It Works Best

• The QCR2040 is well suited for commercial buildings, industrial control panels, OEM machinery, HVAC equipment, automation systems, electrical distribution assemblies, and equipment requiring dependable 2-pole overcurrent protection. Its combination of DIN-rail mounting, rear-mounting capability, and thermal magnetic protection makes it an excellent solution for new installations, equipment upgrades, and replacement applications where reliable circuit protection and efficient panel integration are essential.