A female terminal with a passageway is defined by generally spaced apart sidewalls for receiving a male terminal. The passageway may be configured from two U-shaped channels, with a primary contact and a sacrificial contact stamped from each sidewall of each U-shaped channel with the sacrificial contacts...http://www.google.com.au/patents/US6790101?utm_source=gb-gplus-sharePatent US6790101 - Female terminal with sacrificial arc discharge contacts
