ESN Type 8901 Potential Protection Device for Floating Grounds with Current Control

ESN

Product Code: Type 8901
Brand: ESN

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Description for ESN Type 8901 Potential Protection Device for Floating Grounds with Current Control

Protection from contact voltage and corrosion present a particular problem in the case of DC powered railway vehicles. On the one hand, direct electrical currents should not be connected to ground in order to prevent corrosion, but on the other hand, strict electrical separation can result in hazardous voltage potentials between the two areas. Technical Data Dimensions WxHxD see illustration Housing Polyester / Makrolon Mounting Wall mounting tabs Strap mounting Protection class IP 55 Ambient temperature -20ºC to +70ºC Voltage fuse type 8961 (part-no. 250150) Threshold 120V ±20% (bi-directional) other threshold voltages available Impulse current 60kA (8/20?s) Short-circuit capability 5kA (? 250ms) Current relay type 8546 Threshold > 15 A (polarity independent) Supply voltage AC 230 V , DC 24V Output contact 1 change-over contact (potential free) Voltage Current AC 230 V 4.0 A DC 110 V 0.5 A Function display LED Functions 1 x button button not pushed: memory button fixed pushed: no memory button pushed: reset memory Connections Supply voltage 4 mm2 Signal contact 4 mm2 Ground potential M16 threaded bolt Ordering Information Type Order No. 8901 240123 - AC 230V version 240124 - DC 24V version 240125 - AC + remote reset 240126 - DC + remote reset Voltage fuse (VLD) separately: 240198 - DC 24V without VLD 240199 - AC 230V without VLD