Siemens | QJ23B175H00S01 | Circuit Breaker | 175A | 3-Pole | 240V

Siemens QJ23B175H00S01 represents dependable protection for demanding 3-phase electrical systems. Designed for 175A operation across a 3-pole, 240V configuration, this circuit breaker is ideal for maintenance, retrofit, and replacement projects where exact compatibility matters. With Siemens' proven engineering, you get consistent performance and a familiar, field-ready fit that you can trust in critical panels.

Key specifications

• Amperage: 175 A
• Poles: 3-Pole
• Voltage: 240 V
• Part number: QJ23B175H00S01

Compatibility note: Confirm fit and ratings before ordering. The part number is the best reference for compatibility with your Siemens panel, ensuring you don’t disrupt protection margins or mounting alignment.

Why choose this Siemens circuit breaker?

• Precise fit within the Siemens QJ family, delivering reliable mounting, terminals, and protective behavior identical to your existing setup.
• Specifically suited for maintenance, retrofit, and replacement scenarios, helping you minimize downtime and keep systems running smoothly.
• Designed for 240V three-phase distribution, making it a solid choice for commercial and light-industrial environments that rely on stable, predictable protection.
• Backed by Siemens’ reputation for durable construction and long service life, helping you reduce future service calls and replacements.

Ideal use scenarios

• Replacing a failed or aging 3-pole, 240V circuit breaker in commercial panels or light-industrial distribution systems.
• Retrofit projects where a 175A, 3-pole solution is required to match existing protection schemes and panel footprints.
• New installations that require a proven Siemens component for 3-phase protection at 240V with a 175A rating.

Installation considerations

• Always verify panel compatibility with the exact part number before ordering to ensure correct fit and protection characteristics.
• Power down the equipment and follow established safety procedures prior to installation or replacement.
• Ensure conductors and terminals comply with your panel’s specifications and that the device is seated firmly in the bus and enclosure.
• Consult your panel’s documentation for alignment with 175A protection requirements and any torque or tightening guidelines for terminals.