Siemens QJ23B125 - 125A, 240V, 3-Pole, Disconnect Switch

Meet the Siemens QJ23B125—a purpose-built disconnect switch engineered for industrial and commercial environments where safe, reliable electrical isolation is non-negotiable. With a robust 125A rating at 240V and a true 3-pole design, this device delivers dependable disconnection under load while supporting essential lockout/tagout procedures for maintenance and safety.

Why this matters

• Safe isolation during servicing: The QJ23B125 is purposefully designed to enable clear de-energization of circuits, helping protect technicians and equipment during maintenance.
• Lockout/tagout compatibility: Built to support standard safety practices, it facilitates reliable lockout/tagout procedures to prevent accidental re-energization.
• Durable, long-term performance: Engineered for demanding industrial and commercial use, it maintains dependable operation over time in real-world conditions.
• Straightforward disconnection under load: Engineered to provide a clean, decisive interrupt when switching, reducing arcing risk and ensuring system safety.

Key features and specifications

• Amperage rating: 125A
• Voltage rating: 240V
• Poles: 3-Pole
• Product type: Disconnect Switch
• Brand: Siemens
• Model: QJ23B125

Ideal use cases

• Electrical service panels, motor control centers, and distribution boards where reliable isolation is required
• Maintenance windows and servicing of industrial equipment that demand strict lockout/tagout procedures
• Commercial facilities and light industrial applications needing a sturdy disconnect for routine or emergency interventions

Practical benefits

Choosing the Siemens QJ23B125 means pairing your system with a trusted disconnect switch designed to integrate into everyday safety workflows. The combination of a solid 125A rating and a decisive 240V disconnection provides a clear path to safe maintenance, minimized downtime, and enhanced protection for personnel and downstream equipment. Its durable construction stands up to the rigors of industrial environments, delivering consistent performance when it matters most.