QC3070H - 70 Amp Circuit Breaker

QC3070H - 70 Amp Circuit Breaker

The QC3070H is a 3-pole, 70-amp thermal magnetic circuit breaker designed to provide dependable overcurrent and short-circuit protection for your 240VAC electrical distribution systems. Built as a QC (Quicklag) Type breaker, it features a cable-in/cable-out configuration that simplifies installation in compatible panelboards and electrical systems. With a 10kA interrupting capacity at 240VAC and HACR rating, this breaker is well suited for protecting HVAC equipment, commercial electrical systems, industrial machinery, and a wide range of branch circuit applications. Engineered for operation in 40°C ambient conditions, the QC3070H delivers consistent performance while helping you safeguard conductors and connected equipment from damaging electrical faults. Whether you're replacing an existing breaker or maintaining a compatible power distribution system, this thermal magnetic circuit breaker offers the dependable protection professionals expect.

Key Features and Benefits

• 70 Amp Continuous Current Rating: 70 Amp continuous current rating for medium- to high-capacity branch circuit protection.
• 3-Pole Design: 3-pole design provides protection for three-phase electrical systems.
• Thermal Magnetic Trip Mechanism: Thermal magnetic trip mechanism helps respond to both overload conditions and short circuits.
• 10kA Interrupting Capacity at 240VAC: 10kA interrupting capacity at 240VAC helps safely interrupt fault currents within its rated capacity.
• QC (Quicklag) Type Breaker: QC (Quicklag) Type breaker designed for use in compatible electrical equipment.
• Cable-In/Cable-Out Configuration: Cable-In/Cable-Out configuration supports straightforward field installation.
• HACR Rated: HACR rated, making it suitable for heating, air conditioning, and refrigeration equipment where permitted by applicable electrical codes.
• 40°C Ambient Operation: Rated for 40°C ambient operation, supporting reliable performance in demanding environments.
  

Technical Specifications

• Part Number: QC3070H
  
• Type: QC (Quicklag)
  
• Poles: 3
  
• Amperage: 70 Amps
  
• Voltage Rating: 240VAC
  
• Interrupting Capacity (A.I.C.): 10kA @ 240VAC
  
• Trip Unit: Thermal Magnetic
  
• HACR Rating: Yes
  
• Operating Temperature: 40°C
  
• Connection Style: Cable-In/Cable-Out
  
• Dimensions:
  • Height: 3.75 in.
  • Width: 3.00 in.
  • Depth: 2.50 in.

Material Compliance and Certifications

• HACR Rated: HACR Rated for applicable heating, air conditioning, and refrigeration equipment.
• Thermal Magnetic Protection: Thermal magnetic protection designed to provide reliable overload and short-circuit protection.
• Compatible QC (Quicklag) Systems: Manufactured for use in compatible QC (Quicklag) electrical distribution systems.
• Installation Requirements: Always verify compatibility with your panelboard and ensure installation complies with applicable local electrical codes and manufacturer requirements.
  

Where It Works Best

• The QC3070H is an excellent choice for commercial, industrial, and institutional electrical systems that require a 70-amp, 3-pole circuit breaker. It is commonly used to protect three-phase branch circuits, HVAC equipment, motors, distribution panels, and other electrical loads operating on 240VAC systems. Its combination of thermal-magnetic protection, HACR rating, and cable-in/cable-out configuration makes it well suited for maintenance, replacement, and new installations in compatible QC electrical panels.