The A/ACS, A/ASCS, A/CS and A/SCS Series ACI current-operated switches are solid-state devices that operate when the sensed AC current level exceeds a fixed or adjustable trip point. These are proven performers in building automation systems, BAS. The A/CS current switch is solid-core with a fixed trip point. The A/SCS Series is split-core with a fixed trip point. The A/ACS Series current switches are solid-core with adjustable trip point. The A/ASCS Series current sensing switch is a split-core with adjustable trip point. All current switches monitor either a 0-200 or 0-250 amp current flow in the wire and are available in normally-open or normally-closed configurations. The A/CR Series command relay brings control to monitoring applications.