Siemens | QJH23B100A02 | Circuit Breaker | 100A | 3-Pole | 240V

Siemens QJH23B100A02 Circuit Breaker is a reliable three-phase protection device designed for maintenance, retrofit, and replacement projects. With a 100A rating in a 3-pole configuration for 240V systems, this breaker slots into Siemens panels that accept the QJH-series, delivering consistent performance where accuracy and compatibility matter most. The part number QJH23B100A02 serves as the quickest, most exact reference for matching your existing installation.

Key specifications

• Amperage: 100 A
• Poles: 3-Pole
• Voltage: 240 V
• Part Number: QJH23B100A02
• Compatibility: Designed for Siemens panels that accept QJH-series breakers; verify fit with your panel labeling and Siemens catalog.

Why this Siemens breaker stands out

This breaker is more than a drop-in safety device—it’s a purpose-built solution for protecting three-phase circuits up to 100A. The 3-pole design ensures coordinated protection across all hot legs, reducing the risk of phase imbalance and equipment damage in 240V systems. Its form factor aligns with the QJH family, making replacements straightforward and minimizing downtime during maintenance or retrofits. Rely on Siemens engineering for dependable trip performance and long-term service life in demanding electrical environments.

Ideal for

The QJH23B100A02 is well-suited for:

• Industrial control panels and motor feeders in manufacturing facilities
• Commercial electrical rooms servicing three-phase equipment
• Retrofits or replacements where your system relies on QJH-series breakers
• Any 240V, 3-phase distribution where a precise 100A protection threshold is required

Installation & compatibility tips

• Before purchasing, confirm fit and ratings using the part number QJH23B100A02 and your panel’s compatibility documentation.
• Ensure the panel is designed for QJH-series breakers to maintain proper electrical clearance, bus connection, and trip coordination.
• Follow manufacturer torque specs and tighten lugs to the recommended values during installation to ensure reliable operation.
• Keep a record of the part number for future replacements or quick ordering in your maintenance program.

Practical insights

In environments where uptime is critical, having a readily compatible replacement like the Siemens QJH23B100A02 minimizes downtime during maintenance windows. Its 100A rating makes it a precise choice for protecting feeders and motors in mid-sized commercial or light industrial applications, while its compatibility with the QJH-series footprint ensures you’re aligned with existing infrastructure and future upgrade plans.