Monitoring Relays Surge Arresters for communication systems Type DSB S Universal surge arrester for 2-wires communication buses Perfect choice for RS485 and RS serial lines Dual technology with GDT and tranzorb DIN-rail mounting Replaceable plug in module Product Description Ordering Key DSB 51 X X S DSB51XXS is a surge pro- devices such as inverters, Mounting din tecting device that has energy meters, interface Surge Arrester been specifically designedprotections (coupling Type for 2 and 4 wires communi- devices), control and Item number cation buses at 5V (eg. acquisitions systems in Output RS485, RS422 (with 2 photovoltaic installations Network devices) and Modbus RTU that are interconnected by Serial ), measuring, controlling means of serial communi- and regulating devices cation lines. The construc- used in industrial and resi- tion is DIN rail mounting dential environments. It and the cartridge is can also be used for pro- replaceable. tecting from overvoltages Type Selection Nominal voltage Code Description Output relay Cartridge of the system Surge arrester for 2-wire communication bus 5V No Yes DSB51XXS General Specifications Nominal operating voltage U Transverse capacitance C n 5VDC (a, b-SG) 50pF (SG-PG) 5pF Max. continuous oper. voltage U c 7VDC Insultation resistance of the protection Rated spark over voltage (a-b) 5kohm/ (SG-PG) 184-276V (SG-PG) 5VDC (a-b), (a, b-SG) 6-8V Series resistance 1.6ohm 2ohm Nominal discharge current I n (8/20usec) 10kA Protection distance 10 m (suggested value) Max discharge current I Coarse protection 3 terminal GDT max (8/20usec) 20kA Mode of protection Longitudinal, Transverse Rate operating current 25C IL Operating temperature -40 to +80 C 1A Protection degree IP 20 Residual voltage 5kA Housing material Thermoplastic gray (8/20usec) <22V (line-line) extinguishing degree V-O Response time 2 Terminal cross section Multi-strand to 4mm of overload protection ta Mounting EN 60715 On a 35mm DIN rail (a, b-SG) <1ns (SG-PG) 100nsec Design Replaceable plug-in module Limit frequency 30MHz Dimensions H90 x L12 x P71.5mm CE Marking Yes Specifications are subject to change without notice. Pictures are just an example. For special features and/or customization, please ask to our sales network. REV0 120214 1DSB S Dimensions 771.51.5 1212 Wiring Diagrams Legend: TC thermo-clip GDT R GDT gas discharge tube R resistor BD bi-directional TVS diode TC DB SG signal grounding PG protective grounding R a a b b GDT a b SG SG b a LINE EQUIP SG SG SG SG PG PG 2 Specifications are subject to change without notice. Pictures are just an example. For special features and/or customization, please ask to our sales network. REV0 120214 9090 U = 5VDC n I = 1A: I =10kA (8/20) Ln DSB51XXS