Siemens | BQ3B070HL | Circuit Breaker | 70A | 3-Pole | 240V | Bolt-On

Discover reliable, three-phase protection with the Siemens BQ3B070HL Circuit Breaker. This 70A, 3-Pole unit is purpose-built for 240V systems and features a bolt-on design that simplifies installation while delivering solid, dependable overcurrent protection for demanding panels. Ideal for maintenance, retrofit, or replacement projects, it keeps your electrical distribution running smoothly with minimal downtime.

• Amperage: 70 A
• Poles: 3-Pole
• Voltage: 240 V
• Mounting: Bolt-On for secure, straightforward installation

Why this Siemens breaker stands out The BQ3B070HL is designed to deliver consistent protection in three-phase environments. Its bolt-on approach provides a robust mechanical connection that resists vibration and panel movement, reducing nuisance trips and ensuring stable performance in industrial and commercial settings. For teams upgrading or expanding 3-phase systems, this breaker pairs precision protection with a dependable, time-saving installation method.

Ideal use cases

• Retrofits where a 3-pole, 240V breaker is required to match existing panel specifications
• Maintenance for aging distribution panels needing a like-for-like, reliable replacement
• New or upgraded three-phase applications within commercial or light industrial installations

Compatibility you can trust Before ordering, confirm fit and ratings against your panel’s requirements. The manufacturer emphasizes that the part number is the best reference for compatibility, so referencing BQ3B070HL when sourcing replacement ensures correct mounting and electrical characteristics for your system.

For professionals seeking durable, straightforward protection in 240V 3-phase setups, the Siemens BQ3B070HL bolt-on circuit breaker delivers precise current protection, secure mounting, and practical suitability for a range of maintenance, retrofit, and replacement tasks.