Siemens | QJH23B110A01 | Circuit Breaker | 110A | 3-Pole | 240V

Siemens QJH23B110A01 is a purpose-built 3-pole circuit breaker designed for robust protection of 3-phase electrical systems. With a 110 A rating at 240 V, this unit is ideal for maintenance, retrofit, and replacement projects where exact specifications are crucial.

• Amperage: 110 A
• Poles: 3-Pole
• Voltage: 240 V
• Part number: QJH23B110A01 (the best reference for compatibility)
• Applications: maintenance, retrofit, and replacement to match exact specs

Precise compatibility for reliable protection

Because this breaker is identified by its exact part number, you’re guaranteed the same frame fit, trip characteristics, and mounting footprint as your existing device. This makes it an exacting choice for restoring protection in aging panels, or for planned upgrades where a 110 A, 3-pole, 240 V protection device is required.

Ideal use cases

• Retrofit projects where three-phase protection at 240 V is needed for new or existing equipment
• Replacement in service or distribution panels that previously used QJH-series breakers
• New installations requiring a 110 A, 3-pole, 240 V feeder breaker for three-phase circuits

Installation tips and best practices

Before ordering, confirm fit and ratings to avoid mismatches—the part number QJH23B110A01 is your most reliable reference. During installation, follow standard electrical safety procedures: power down the panel, verify bus compatibility, and secure mounting per the panel’s documentation. If in doubt, consult a licensed electrician to ensure compliance with local codes and correct protective coordination for your specific load profile.

Why this Siemens breaker stands out

As a Siemens component, this breaker is designed to integrate smoothly with Siemens panels and 3-phase systems, delivering dependable protection for critical equipment and reducing the risk of nuisance trips due to improper matching. The exact part-number identification helps you avoid the common pitfalls of mismatched replacements, supporting a smoother retrofit or replacement workflow.