Siemens | HQJ23B100HL | Circuit Breaker | 100A | 3-Pole | 240V | Bolt-On

The Siemens HQJ23B100HL circuit breaker is built to deliver reliable overcurrent protection in 3‑phase electrical systems. With a 100 A rating, 3 poles, and 240 V operation, this bolt‑on unit is purpose‑built for maintenance, retrofit, and replacement projects where precise specifications matter.

Key specifications

• Amperage: 100 A
• Poles: 3‑Pole
• Voltage: 240 V
• Mounting: Bolt‑On
• Part number: HQJ23B100HL
• Manufacturer: Siemens

Why this model stands out

The bolt‑on mounting design provides a secure, vibration‑resistant connection ideal for panels that support this mounting style. The 3‑pole configuration ensures comprehensive protection across all conductors in a 3‑phase circuit, helping to prevent faults from propagating through the panel while maintaining proper protective coordination.

Compatibility and installation notes

Before ordering, verify fit and ratings for your panel. The HQJ23B100HL part number is the most reliable reference for compatibility with Siemens equipment. If your application requires a 100 A, 3‑pole, 240 V bolt‑on breaker, this model is a direct match for suitable Siemens panels.

Common use cases

• Maintenance: replace aging or damaged breakers with an exact spec match to maintain protection schemes.
• Retrofit: upgrade existing 3‑phase circuits to support higher loads while preserving panel coordination.
• Replacement: restore safety and reliability in panels that require a Siemens HQJ23B100HL bolt‑on solution.

Practical considerations

Always work with the power off and follow local electrical codes during installation. Retain the part number HQJ23B100HL for future maintenance references, and ensure your panel is compatible with bolt‑on breakers of this type for a smooth, trouble‑free replacement.