Data sheet... DK-SERIES DK 4/35 U 470V 20KA Weidmüller Interface GmbH & Co. KG Klingenbergstraße 16 D-32758 Detmold Germany Fon: +49 5231 14-0 Fax: +49 5231 14-292083 www.weidmueller.com Surge protection with individual components With gas-discharge tubes in terminal design Gas-discharge tubes / sparkover gaps (GDT) are designed with a terminal shape. They are approved for a maximum DC voltage, which is printed on the component. Any voltage greater than the amount specified is safely discharged within about 10-100µs. Gas arresters can be used for high-power applications. General ordering data Order No. Type Version GTIN (EAN) Qty. 9400540000 DK 4/35 U 470V 20KA Surge protection for instrumentation and control, Rated voltage: 350 V 4008190156480 25 pc(s). Creation date September 11, 2012 1:22:53 PM CEST Catalogue status 23.07.2012 / We reserve the right to make technical changes. 1 Data sheet... DK-SERIES DK 4/35 U 470V 20KA Weidmüller Interface GmbH & Co. KG Klingenbergstraße 16 D-32758 Detmold Germany Fon: +49 5231 14-0 Fax: +49 5231 14-292083 www.weidmueller.com Technical data Dimensions Length Height 50 mm 56 mm Width Net weight 12 mm 20.8 g -25 °C...+60 °C Storage temperature -25 °C...+85 °C Segment Instrumentation and Control Surge voltage category Yes AC/DC 4 mm² 350 V 600 V ≤ 1 µs Capacitance Rated voltage (DC), max. Rated voltage Discharge current, max. (8/20 µs) Fusing Clamping range, rated connection Temperatures Operating temperature General data Design UL 94 flammability rating Terminal V-2 Insulation coordination acc. to EN 50178 Pollution severity 2 III Interference voltage Protection level on output side Wire-PE 1kV/µs, typically 600 V Protective elements Gas discharge tube Technical data AC/DC/UC Cross-section Rated voltage (AC) Rated voltage (DC) Sparkover time / Drop-out time 2 pF 280 V 350 V 20 kA 1.6 A Connection data Wire connection cross section, finely stranded, max. 4 mm² Clamping range, rated connection, min. 0.5 mm² Tightening torque, min. 0.5 Nm 4 mm² Clamping range, rated connection, max. 4 mm² Tightening torque, max. 1 Nm ETIM 3.0 eClass 4.1 eClass 6.0 EX protection data Certificate No. (ATEX) Ratings IECEx/ATEX Certificate No. (ATEX) Classifications ETIM 2.0 UNSPSC eClass 5.1 eClass 7.0 EC000943 30-21-18-11 27-14-11-27 27-14-11-27 EC000943 27-14-11-27 27-14-11-27 Creation date September 11, 2012 1:22:53 PM CEST Catalogue status 23.07.2012 / We reserve the right to make technical changes. 2 Data sheet... DK-SERIES DK 4/35 U 470V 20KA Weidmüller Interface GmbH & Co. KG Klingenbergstraße 16 D-32758 Detmold Germany Fon: +49 5231 14-0 Fax: +49 5231 14-292083 www.weidmueller.com Technical data Approvals Approvals Downloads Declaration of Conformity K017_08_09.pdf Creation date September 11, 2012 1:22:53 PM CEST Catalogue status 23.07.2012 / We reserve the right to make technical changes. 3 Data sheet... DK-SERIES DK 4/35 U 470V 20KA Drawings Weidmüller Interface GmbH & Co. KG Klingenbergstraße 16 D-32758 Detmold Germany Fon: +49 5231 14-0 Fax: +49 5231 14-292083 www.weidmueller.com Electric symbol Creation date September 11, 2012 1:22:53 PM CEST Catalogue status 23.07.2012 / We reserve the right to make technical changes. 4