Siemens 40-Amp Double-Pole Circuit Breaker

The Siemens 40-Amp Double-Pole Circuit Breaker (D240) is engineered for safe and efficient EV charging, providing reliable protection for Level 2 home and commercial EV chargers. It prevents overloads and short circuits, ensuring a stable power supply to your charging station.

Designed for 240V EV charging circuits, this breaker features a thermal-magnetic trip mechanism that detects overcurrent and immediately cuts power, protecting the electric vehicle branch circuit components including the EV charger, NEMA outlet, and the electric vehicle. Its double-pole design supports high-amperage continuous loads, making it essential for fast and uninterrupted long duration EV charging.

As a QO breaker replacement, the Siemens D240 is compatible with multiple panel types, allowing for bolt-on or plug-in installation. Built with high-durability components, it ensures long-lasting performance in residential garages, commercial parking stations, and fleet charging setups.

For EV owners and installers, this 40-amp breaker meets industry safety standards, delivering consistent and reliable power for home and public charging. Its compact form fits easily into electrical panels, maximizing space efficiency. Siemens’ proven engineering guarantees optimal circuit protection, making it a top choice for dedicated EV charging setups.