Siemens BQ3C070 70A 3-Pole 240 V Circuit Breaker

The Siemens BQ3C070 70A 3-Pole 240 V Circuit Breaker is built to safeguard demanding electrical setups with precise, reliable protection. Serving as the protective heart of compatible Siemens panels, this part (BQ3C070) delivers robust three-pole performance at a full 240 V, ready to handle higher-load circuits with confidence.

Designed for serious electrical environments, this 70-amp breaker interrupts all three live conductors in unison. That means enhanced protection for 3‑pole equipment, multi-wire branch circuits, and 240 V installations where coordinated disconnection is crucial for safety and equipment longevity. It’s an ideal fit for commercial panels, industrial enclosures, and HVAC or motor-driven applications where stable, predictable protection is essential.

• Three-pole 240 V protection ensures simultaneous disconnection of all live lines, improving safety and reducing fault scenarios in 3‑phase or multi-wire circuits.
• 70 A current rating provides suitable overload protection for heavy-load equipment without nuisance trips, helping keep critical systems up and running.
• Siemens engineering means compatibility with Siemens panel architectures and a streamlined maintenance/replacement process for technicians familiar with the BQ family.
• Durable, field-replaceable component supports quick swaps in service centers or on-site panel upgrades, minimizing downtime during upgrades or repairs.
• Clear part identification by part number BQ3C070 facilitates accurate ordering and compatibility checks, reducing the risk of mismatched breakers in panel assemblies.

Practical use cases demonstrate the value of this breaker: protect a heavy-load 240 V circuit in a commercial electrical panel, safeguard a three-pole motor or compressor circuit, or provide reliable disconnect for multi-wire branch circuits in industrial equipment. If you’re upgrading an older panel or stocking a service van, the Siemens BQ3C070 delivers a precise, dependable solution that aligns with Siemens’ panel ecosystems and installation practices.

Specifications

• Current rating: 70 A
• Poles: 3
• Voltage rating: 240 V
• Part number: BQ3C070