Siemens | BQCH3B070 | Circuit Breaker | 70A | 3-Pole | 480V | 14kA | Bolt-On

Siemens BQCH3B070 Circuit Breaker — a robust 70A, 3‑pole unit designed for 480V three‑phase service with a 14kA interrupting capacity. Bolt‑On mounting offers a secure, straightforward installation in compatible Siemens panels, making it ideal for maintenance, retrofit, and replacement projects.

• Amperage: 70A
• Poles: 3‑Pole
• Voltage: 480V
• Interrupting Capacity: 14kA
• Mounting: Bolt‑On
• Part Number: BQCH3B070 (best compatibility reference)
• Compatibility focus: Directly suitable for Siemens bolt‑on panels and systems designed for this family

Why this Siemens circuit breaker stands out: it’s a precise spec match for 480V, three‑phase distribution with a high interrupting capacity, designed to protect critical equipment and personnel. The three‑pole design ensures all live conductors disconnect together for enhanced safety, while the bolt‑on mounting delivers a quick, secure installation without complicated wiring changes.

• Exact spec match—BQCH3B070 ensures reliable protection in 480V, 3‑phase networks, aligning with Siemens protection strategies and existing panel configurations.
• Durable, secure installation—Bolt‑On mounting reduces installation time and provides strong mechanical stability in demanding environments.
• Trusted brand and support—Part of Siemens’ bolt‑on family, offering predictable performance and compatibility within a Siemens‑centric electrical system.

Ideal use cases include maintenance on legacy Siemens bolt‑on panels, retrofits to bring 3‑phase 480V distribution up to current protection standards, and replacements for failed breakers in industrial settings where precise spec matching is essential.

Important compatibility note: Confirm fit and ratings before ordering. The part number BQCH3B070 is the best reference for compatibility with your panel and bus configuration.

• Before purchasing, verify that your panel accepts bolt‑on breakers of this family and that the 14kA interrupting capacity meets your system’s fault‑current levels.
• Use this breaker in 480V, three‑phase applications where three‑pole disconnection is required for safety and code compliance.

Designed for professionals who need dependable, precise protection in 480V 3‑phase environments, the Siemens BQCH3B070 offers a reliable, straightforward path to maintain power integrity, safety, and performance in your electrical distribution system.