It is an additional block of 4 contacts OF for Masterpact NW08 to NW63 devices. These auxiliary contacts provides OF remote information of the circuit breaker status. It is a rotary type changeover contacts directly driven by the mechanism for Masterpact NW. OF contact is a common point changeover type contact with 1 normally open contact and 1 normally closed contact. The rated current is 6A and the minimum load is 100mA at 24 VDC. Utilization categories are AC12/DC12.