Siemens Alarm Switch is a reliable accessory designed for 3VJ9 IEC framesize 3VJ10 breakers with a 125A rating. Featuring a 1x changeover contact on the left, this switch provides efficient alarm signaling. With a rated insulation voltage of 500V, it operates at a minimum of 240V AC or 48V DC. Designed for durability, it supports a thermal current of 5A, making it ideal for industrial safety and monitoring applications.