Siemens B370H00S01 70A 3-Pole 240 V Circuit Breaker Potential Transformer

The Siemens B370H00S01 is a rugged, 3-pole circuit breaker designed to deliver reliable protection for 3-phase electrical systems. With a 70 A current rating and a 240 V operating voltage, this unit is built to perform in commercial and light industrial panels, offering dependable interrupting capabilities and straightforward integration with Siemens panel architectures.

Key specifications

• Part Number: B370H00S01
• Current rating: 70 A
• Poles: 3
• Voltage rating: 240 V

Why this model stands out

The three-pole design ensures balanced protection across all phases in a three-phase network, reducing the risk of unequal loading and potential equipment damage. This breaker features clear, field-verifiable ratings and a robust build that stands up to the demands of busy electrical rooms. As a Siemens-compatible device, it simplifies replacement and maintenance within existing Siemens panel ecosystems, helping you keep downtime to a minimum.

Ideal use cases

• Protect three-phase feeders powering motors, compressors, or transformers up to 70 A per phase in 240 V systems.
• Install as main or branch circuit protection in commercial electrical panels, ensuring reliable shutoff during overloads or faults.
• Use in existing or legacy Siemens panels where a precise, compatible protection device is required to maintain coordination and trip characteristics.

Practical considerations

• Confirm circuit conductor sizing and protection coordination align with local electrical codes and the panel manufacturer's recommendations.
• Follow standard safety procedures when handling or replacing energized equipment; ensure the panel is de-energized before installation.
• When replacing an existing device, verify that trip characteristics match the protection needs of the connected load to minimize nuisance trips.

Whether you’re stocking for service calls, upgrading a facility’s electrical distribution, or maintaining a critical 3-phase feed, the Siemens B370H00S01 70 A 3-Pole 240 V Circuit Breaker provides dependable, straightforward protection with seamless compatibility in Siemens-enabled panels.