The Siemens 3VA1 circuit breakers set new standards in terms of flexibility and variety of modular accessories. Standardized accessories suitable for use with several sizes of circuit breaker from all the 3VA ranges help to cut costs and save installation time. The 3VA1 molded case circuit breakers reliably perform all the tasks required for line protection and starter protection. Compact design Depending on size: 1-pole to 4-pole versions Fixed version, plug-in version Thermal-magnetic trip units AC/DC applications No derating up to +50 °C Modular and easy-to-fit internal accessories with diverse functions Uniform accessories platform across all 3VA molded case circuit breakers