Limit switch contact block, 1NC+2NO, snap action. range of product: OsiSense XC – series name: standard format – product or component type: limit switch contact block – device short name: XE3S – associated body: ZCD31, ZCKJD31, ZCKLD31, ZCKMD31, ZCP31, ZXKSD31 – contacts type and composition: 2 NO + 1 NC – contact operation: snap action.