Monitoring Relays Surge Arresters forAC systems Type DSB53 P • Category IEC / EN / VDE: Class II/Type 2/C • Connection to TN-C networks • MOV protection • Thermal disconnection • Modular design housing • Replaceable cartridges • DIN rail Mounting • IEC 61643-1 compliant Product Description Ordering Key DSB53 X P 275 DSB53 series of over- voltage surgeprotection devicesis suitablefor the protection of three phase AC mains con- nected devices fromthe effects of indirect light- ning discharges and induced voltages andis intended toprovide pro- tectionin zones 1-2 tor (MOV) block with thermal disconnection device. This configura- tionof SPD is particular- lyindicated forTN-C Three Phase distribution networks. Plug in modulesfacili- tate replacement of failed modules on site withoutthe need of Type Poles Contact Three Phase (3+0) MCOV Type Selection per IEC 62305. The replacingandrewiring modulesconsistsofan highperformanceVaris- the wholeblock. Contact None X 1 (relay)C Max. Continuous Oper. Voltage MCOV 275Vac/350Vdc275 385Vac/500Vdc385 440Vac/580Vdc440 Cartridges Ordering Codes for MCOV 275 arrestersDS0275 for MCOV 385 arrestersDS0385 for MCOV 440 arrestersDS0440 Electrical characteristics Max. Continuous Oper. Voltage Uc MCOV275Vac / 350Vdc 385Vac / 500Vdc 440Vac / 580Vdc Nominal discharge current In (8/20) 20kA per pole (40kA) Max discharge currentImax (8/20) 40kA per pole (80kA) Protection levelUp 275<1.5kV 385<1.9kV 440<2.2kV Follow current If NO Response time tA<25ms Thermal protectionYES Back-up fuse (if mains >125A) 125A gL Short-circuit withstand current 25kA/50Hz 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 100713 1
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