Siemens | HQJ23B125H00S07 | Circuit Breaker | 125A | 3-Pole | 240V | Bolt-On

Siemens HQJ23B125H00S07 Circuit Breaker — 125A, 3-Pole, 240V, Bolt-On

This Siemens circuit breaker is built for maintenance, retrofit, and replacement projects where exact specifications matter. With a 125-amp capacity, three poles, and a 240-volt rating, it delivers reliable protection for demanding, three-phase electrical systems in commercial or industrial environments. The bolt-on design provides a secure, vibration-resistant connection that’s ideal for panels and installations that demand durable, long-lasting performance.

• Amperage: 125 A
• Poles: 3-Pole
• Voltage: 240 V
• Mounting: Bolt-On
• Part Number: HQJ23B125H00S07

Who should consider this breaker? It’s a preferred choice for electricians performing panel retrofits, replacements, or upgrades in Siemens-equipped environments. If your service panel or load center requires exactly HQJ23B125H00S07, this unit ensures compatibility without compromising protection for your three-phase circuits.

Why the bolt-on design matters

• Enhanced mechanical stability in panels that experience vibration or heavy load switching.
• More robust fault-clearing performance thanks to a solid physical connection.
• Simplified future servicing: secure retention reduces risk of loose connections over time.

Practical use cases

• Retrofit projects in existing Siemens panels that require a 125A, 3-pole, 240V bolt-on breaker.
• Replacement for failed or degraded 3-phase breakers in commercial electrical rooms or industrial equipment setups.
• Motor-control and feeder protection for equipment operating on 240V three-phase power.

Compatibility and installation notes

Before ordering, verify that your panel accepts bolt-on, 3-pole breakers of this rating. The part number HQJ23B125H00S07 is the most reliable reference for compatibility, so cross-check it against your panel model and documented requirements. If in doubt, consult your panel’s specification sheet and ensure the surrounding wiring, bus bars, and mounting infrastructure align with a 125A, 3-Pole, 240V bolt-on configuration.

What you get

One Siemens HQJ23B125H00S07 circuit breaker designed for dependable protection on 3-phase, 240V circuits. Ideal for technicians who value precise specifications, robust mounting, and durable performance in demanding electrical environments.