It is a single standard auxiliary contact that provides two remote information of the circuit breaker status. It is used on Compact NSXm and PowerPact B devices. The OF contact (open/closed) indicates the position of the circuit breaker main contacts. The SD contact (trip indication) indicates if the circuit breaker has tripped. There is one auxiliary contact model for OF and SD information, depending on where it is fitted in the device. This auxiliary is a common point changeover type contact with 1 normally open contact and 1 normally closed contact. The rated current is 5A and the minimum load is 2mA at 17 VDC. Utilization categories are AC12/AC13/DC12/DC13/DC14. Compact NSXm embeds 2 auxiliary contacts and their presence is visible on the front face through green flags. It complies with IEC 60947-5-1 standard.