Thomas & Betts | QC70 | Circuit Breaker | 70A | 2-Pole | 240V | 10kA

Thomas & Betts QC70 Circuit Breaker delivers dependable overcurrent protection for 240V circuits with a 70A capacity. This 2-pole device is built for maintenance, retrofit, and replacement scenarios where exact specifications matter, ensuring you can restore protection quickly and confidently.

Key specifications

• Amperage: 70 A
• Poles: 2-Pole
• Voltage: 240 V
• Interrupting rating: 10 kA
• Reference: Part number QC70 for compatibility

What makes QC70 different

• Exact-fit compatibility: Designed for panels that call for QC70, making it ideal for retrofit and replacement projects where precise matching matters.
• Dual-leg protection: The 2-pole design disconnects both conductors on fault, improving fault isolation and safety for 240V loads.
• Versatile protection for commercial and industrial loads: Ideal for motors, HVAC feeders, and other 240V equipment that require reliable interruption at fault.
• Proven reliability: Backed by Thomas & Betts’ long-standing track record in electrical distribution components.

Ideal use cases

• Retrofits: Swap in a QC70 when updating aging panels that require a 70A, 2-pole, 240V breaker with a 10kA rating.
• Maintenance: Maintain uptime by stocking a compatible spare for quick replacement during service.
• New installations: Select QC70 when your design calls for precise spec alignment and robust fault-current protection.
• High-current 240V circuits: Protect large motors, compressors, and other heavy loads where reliable interruption is essential.

Compatibility and installation tips

Before ordering, confirm fit and ratings against your panel’s catalog. The QC70 part number is the best reference for compatibility, and you should verify the panel’s bus type and mounting style match the breaker design.

Maintenance, safety, and longevity

Follow standard electrical safety procedures during installation and maintenance. Use the same 70A, 240V, 2-pole device with a 10kA interrupt rating to preserve system protection integrity. Keeping a correctly rated QC70 on hand helps minimize downtime and ensures consistent protection for critical circuits.

Frequently asked questions

• Q: Can I use QC70 on a 208V system? A: This model is specified for 240V; verify your panel’s voltage rating before use.
• Q: What does 10kA rating mean? A: It indicates the maximum fault current the breaker can interrupt safely without damage.
• Q: Is QC70 compatible with all Thomas & Betts panels? A: Compatibility is best confirmed by cross-referencing the part number QC70 with your panel’s catalog or manufacturer guidance.