Beckwith M-3908 Universal Contact Input Adapter

Beckwith Electric's M-3908 Universal Contact Input Adapter converts seven internally wetted status inputs from Beckwith relays to externally wetted inputs, enabling safe interfacing with external control circuits. The input voltage is selectable from 12 to 250 V DC via jumper configurations on the printed circuit board, with nominal options including 12, 24, 48, 125, and 250 V DC, and each externally wetted input is isolated from the others; input to output is optically isolated. It is designed to mate with Beckwith M-34XX protective relays and the M-4272 Motor Bus Transfer System contact inputs, supporting generator protection applications. The device offers two terminals per input circuit and is intended for panel mounting. Physical dimensions are 8.75 inches wide, 4.50 inches high, and 1.50 inches deep, with a weight around 1.14 lb. There is an approximate 1 ms delay from input to output, reflecting the time needed to translate internal wetted contacts to externally accessible contacts while maintaining electrical isolation.