3VA5340-5EF31-2AA0 SIEMENS

The 3VA5340-5EF31-2AA0 is a robust 3-pole circuit breaker from Siemens, designed for reliable line protection in industrial and commercial applications. This UL-listed breaker falls under frame size 400 and boasts a breaking capacity class M, capable of interrupting fault currents up to 35kA at 480V. It features a TM240 trip unit, an ATAM (Adjustable Thermal-Magnetic) type, allowing for customized protection settings. The rated current (In) is 400A, providing ample capacity for demanding circuits. Notably, this model does not include overload protection, focusing solely on short-circuit protection. The adjustable short-circuit protection (Ii) ranges from 5 to 10 times the rated current (In), offering flexibility in coordinating with downstream devices. This breaker is supplied without connection terminals, enabling users to select the appropriate connection method for their specific installation requirements. Its primary function is safeguarding electrical lines against short circuits, preventing damage to equipment and ensuring system safety. The absence of overload protection necessitates the use of supplementary devices for comprehensive circuit protection. This makes it suitable for applications where dedicated overload relays or other protective measures are already in place.