Siemens Auxiliary Switch is a reliable accessory for 3VJ11 (125A) and 3VJ12 (250A) breakers, featuring a 1x changeover contact positioned on the left. Designed for safety and efficiency, it operates at a minimum of 240V AC or 48V DC, with an insulation voltage of 500V. The switch supports a thermal current of 5A and is built to withstand a range of operational temperatures, ensuring optimal performance in diverse environments.