Siemens | D240 | Circuit Breaker | 40A | 2-Pole | 240V | Plug-In

Siemens D240 is a purpose-built circuit breaker designed for fast, reliable protection in compatible Siemens panels. With a robust 40-amp, 2-pole configuration and a 240-volt rating, this plug-in breaker is crafted for straightforward replacement, retrofit, or maintenance projects where exact Siemens-spec compatibility matters.

Key specifications

• Amperage: 40A
• Poles: 2-Pole
• Voltage: 240V
• Mounting style: Plug-In

Why this matters

When your 240V circuits demand dependable overcurrent protection, the Siemens D240 delivers a precise, plug-in solution that aligns with existing panel infrastructure. The 2-pole design ensures both hot legs disconnect simultaneously, enhancing safety for high-load appliances and multi-wire branch circuits commonly found in kitchens, garages, and mechanical rooms. The plug-in format means less downtime during replacement and a cleaner, more secure installation in compatible load centers.

Ideal use cases

• Maintenance or retrofit projects where matching Siemens specifications is critical
• Replacement of a failed 40A, 2-pole 240V circuit breaker in Siemens panels
• Upgrading or restoring electrical service in homes or small commercial setups with 240V loads

Compatibility and installation tips

Always verify fit and ratings before ordering. The D240 part number is the most reliable reference for ensuring compatibility with your panel. For a safe swap, power down the main disconnect, confirm the panel accepts plug-in breakers, and install firmly into the listed slot to maintain proper electrical contact and trip performance.

What makes it stand out

Distinctively Siemens, this breaker is purpose-built for seamless integration into Siemens electrical systems. Its clear 40A, 2-pole, 240V specifications, combined with a plug-in design, provides a dependable, ready-to-install solution that reduces downtime and ensures consistent protection across your 240V circuit needs.