MDP-4 D...-EX : Lightning barrier for intrinsically safe measuring circuits - protective device for multi-wire systems - direct shield earthing and with screwless connection terminals - space-saving width of only 8.7 mm - high frequency range of 0-100 MHz - ATEX approval: II 2 (1) G Ex ia [ia Ga] IIC T4 Gb (BVS 11 ATEX E 131 X) - UL listed (4UM2) Application: Universal use on 35 mm top hat rail in any commercially available distribution housing.