Siemens | HQJ3B125H01S11 | Circuit Breaker | 125A | 3-Pole | 240V | Bolt-On

Designed for demanding electrical systems, the Siemens HQJ3B125H01S11 circuit breaker offers reliable 125A overcurrent protection in a 3-pole, 240V configuration. This bolt-on unit is built for maintenance, retrofit, and replacement projects where exact specifications matter, delivering safe, predictable protection for three‑phase loads.

Key specifications at a glance

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

Why this bolt-on breaker matters

When upgrading or replacing a failed breaker in compatible Siemens panels, a bolt-on design simplifies field servicing. The HQJ3B125H01S11 pairs secure mounting with dependable trip performance, helping to minimize downtime and keep critical circuits protected. Its precise 125A rating is ideal for distributing three‑phase loads where consistent protection is essential.

Ideal use cases

• Maintenance replacements in Siemens panel boards that require a 125 amp, 3‑pole, 240V bolt‑on unit
• Retrofit projects updating electrical service to standard 125A protection for 3‑phase equipment
• Replacement of worn or failed breakers in industrial or commercial installations with matching specs

Fit, compatibility, and installation notes

To ensure proper operation, always confirm fit and ratings before ordering. The part number HQJ3B125H01S11 is the most reliable reference for compatibility with your panel. This breaker is designed for bolt-on mounting in panels built to Siemens specifications and should be installed by a qualified electrician following all safety requirements.

What makes it stand out

• Siemens reliability: part of a broad ecosystem designed for consistent performance across 125 A, 3‑pole, 240V applications
• Secure bolt‑on mounting for fast field service with minimal panel disruption
• Clear labeling and durable construction to withstand industrial environments
• Exact 125 A rating ensures predictable protection for three‑phase circuits

Whether you're maintaining an aging installation, retrofitting for higher capacity, or replacing a like-for-like unit, the HQJ3B125H01S11 delivers the protection you count on—without guesswork. Verify compatibility with your Siemens panel before purchase to ensure a seamless fit and reliable operation.