Siemens BQ3B070H00S01 70A 3-Pole 240 V Circuit Breaker Potential Transformer

Meet the Siemens BQ3B070H00S01: a rugged 3-pole circuit breaker engineered for reliable protection in demanding three-phase power systems. With a 70 A current rating and a 240 V design, this device is built to smoothly safeguard industrial and commercial electrical distributions while integrating with measurement and protection schemes that rely on a potential transformer interface.

• Current rating: 70 A — provides strong protection for motors, feeders, and critical loads without excessive nuisance trips.
• Poles: 3 — ideal for three-phase power distribution, ensuring synchronized disconnection of all live conductors.
• Voltage rating: 240 V — suited for standard distribution networks and typical three-phase installations.
• Potential transformer interface: designed to support metering and protection relays through compatible connections, enabling accurate current measurement and relay coordination.
• Compatibility: purpose-built for Siemens panels and ecosystem, streamlining replacement and system integration with familiar form factors.
• Part Number: BQ3B070H00S01 — precise identification for ordering, stocking, and cross-reference within Siemens protection and monitoring solutions.

What problems does it solve? This unit delivers dependable protection for three-phase circuits while simplifying integration with monitoring equipment. The potential transformer interface makes it straightforward to feed accurate current signals to metering systems and protection relays, reducing wiring complexity and improving visibility into load behavior across your distribution network.

Ideal for: facility engineers, panel builders, and electrical contractors working in data centers, manufacturing floors, HVAC and motor-control neighborhoods, or any application requiring robust three-phase protection at 240 V with easy measurement integration.

Why choose this Siemens breaker? You’re selecting a device backed by Siemens engineering, designed to deliver consistent trip performance, dependable mechanical durability, and seamless compatibility with Siemens protection schemes. When upgrading protection or adding metering capabilities, this 70 A, 3-pole unit provides the right balance of protection and measurement readiness without sacrificing panel space or reliability.

Product Details

• Part Number: BQ3B070H00S01
• Current rating: 70 A
• Poles: 3
• Voltage rating: 240 V