Siemens | JD22M400 | Circuit Breaker | 2-Pole | 240V | Bolt-On

Siemens JD22M400 is a reliable 2-pole circuit breaker designed for 240V service with bolt-on mounting. Built for maintenance, retrofit, and replacement projects, it plugs into compatible Siemens panels with confidence, delivering dependable overcurrent protection where you need it most.

Smart, task-focused design for real-world needs

• Two-pole, 240V protection: Safeguards both legs of a 240V circuit with synchronized trip behavior to prevent faults from spreading.
• Bolt-on mounting: Replaces or adds protection quickly in panels that support bolt-on breakers. Solid mechanical fit ensures secure, vibration-resistant operation in demanding environments.
• Exact reference for compatibility: The JD22M400 part number is your best match for interchangeability with Siemens equipment. Always confirm fit and ratings before ordering.
• Maintenance and retrofit ready: A practical choice for service teams upgrading old installations or retrofitting to meet current electrical codes.
• Reliable Siemens engineering: Built to align with Siemens distribution systems and protect equipment with trusted performance.

Who this is for: electrical contractors, facilities engineers, and maintenance crews looking to replace a failing breaker or add protection in existing Siemens panels. Ideal for panel upgrades, service calls on aging electrical infrastructure, and new installations where a two-pole, 240V bolt-on breaker is required.

Key considerations for selection and installation: verify the panel rating and exact compatibility using the JD22M400 part number; ensure your panel accepts bolt-on breakers; confirm mounting hardware availability; store in a clean, dry environment to maintain contact integrity and trip performance.