Short circuit alarm switch, CO contacts, type HQ (7 mm) accessory for: 3VA1 160

short circuit alarm switch changeover contacts type HQ (7mm) accessory for: 3VA1 160 essory pockets of the molded-case circuit breaker. 3. Standard internal accessories for 3VA molded case circuit breakers. 4. Available internal accessories: Auxiliary switches, leading auxiliary switches, tripped and short-circuit signaling switches (3VA1 only), auxiliary trip units (voltage, residual current, undervoltage and universal release), cylinder lock.