EGIS™ 500A Heavy Duty Battery Switch/XD Mechanical Contactor. Silver alloy contact points support high ampere/full voltage switching capability versus legacy rotary style switches. Expandable: integrate the 8700 XD battery disconnect easily with XD series FLEX/ACR/LVD relays via optional 8790 link and 8791 cross link busbars bars for easy integration with other single, dual or triple circuit XD relays. Terminal stud protection: included protective cover with convenient label recesses ensures no accidental shorts occur and allows for easy identification of circuits long term.