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10Ultra-Slim Lightning Surge ProtectorsM-Systemʼs MD7 Series are lightning and surge protectors for instrumentation signal, network and power supply. Housed in only 7-mm-wide ultra slim housings, 16 surge protectors lined side by side take only 110-millimeter wide space. With the height and depth similar to PLCs and remote I/Os, they are ideal to be installed in panels and cabinets together with these instruments.Four poles of terminals are equipped on each of surge side and protected side, three for signal and one for shield. By adapting an independent set of shield terminals, floating and grounding can be se-lected in free combinations to suit usersʼ applications.The MD7 Series are designed for multi-point, ultra-high-density installation. DIN rail mounting/grounding and slanted terminal block help installation and wiring work in such tight space.When the DIN rail is grounded at single point, surge protectors mounted on it are automatically connected to the earth. There is no need of cross-wiring individual module.Thanks to the terminal blocks slightly slanted forward, access from the front side to the terminals is easy even after the protectors are mounted on the rail.Series• High-density mounting with 7-mm wide modules • Excellent protection by multi-stage SPD • Max. discharge current 20 kA (8/20 µsec.) • Floating mode for the shield to avoid ground loops • DIN rail mounting / grounding • Loop disconnect fuse (option)The multi-stage protection combining dis-charge elements at the first stage and the series resistances and diodes ensures to limit the current flow.The maximum discharge current capacity is as high as 20 kA for an impulse wave of 8/20 microseconds. The MD7 Series are tested according to IEC 61643-21 stand-ard to be suitable for categories C1, C2 and D1. C1 category requires the surge protector to withstand 300 times of aver-age induced surges, C2 to withstand 10 times of strong induced surges generated in a harsh environment without electro-magnetic shielding. D1 category is tested by two direct hits.HIGH PERFORMANCEEASY COMMISSIONINGNEW98 (3.86)7 (.28)95 (3.74)8654114568237237Easy wiring: Slanted terminalsDIN railmounting /groundingWide adaptabillity:4-pole terminalsLoop disconnectfuse (MD7ST)Power LED(MD7DP)Only 7 mmwideunit: mm (inch)

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