Siemens | QJ23B100L | Circuit Breaker | 3-Pole | 240V

Siemens QJ23B100L is a 3-pole, 240V circuit breaker engineered for reliable protection in electrical distribution systems. Built for maintenance, retrofit, and replacement work, this unit helps keep critical equipment safe while aligning with your existing Siemens panel architecture.

Key advantages come from using the exact part within the Siemens QJ family: consistent electrical characteristics, straightforward field replacement, and a mounting footprint designed to fit compatible panels. When exact specs are required, choosing the QJ23B100L ensures your system maintains its intended protection profile with minimal downtime.

• Poles: 3-Pole
• Voltage: 240V
• Part number: QJ23B100L
• Recommended use: Maintenance, retrofit, or replacement where exact specifications are required
• Compatibility note: The part number is the best reference for compatibility; confirm fit and ratings before ordering

Why this matters: using the precise Siemens QJ23B100L part preserves system electrical characteristics and physical fit, reducing installation guesswork. It’s especially valuable when upgrading 3-phase distribution paths or restoring a failed unit in Siemens-based equipment, helping you avoid mismatched components and unnecessary downtime.

Ideal scenarios include a facilities team upgrading a 3-phase service in a warehouse, an industrial maintenance crew replacing worn breakers in a Siemens switchboard, or a equipment manager stocking spares for routine panel servicing. The 3-pole, 240V configuration is tailored for protecting 3-phase circuits common in commercial and light-industrial environments.

Practical installation tips: de-energize the system before handling; verify that the panel documentation supports 3-pole, 240V protection and that the QJ series is appropriate for your panel. Keep the part number QJ23B100L handy for future ordering, and store replacements in a labeled, readily accessible location.