Key Technical Parameters Parameter Specification Order No. 1020180000 Type WDU 4 BL Version Feed-through terminal block, Screw connection, blue, 4 mm², 32 A, 800 V, Number of connections: 2 GTIN (EAN) 4008190185237 Quantity per package 100 pc(s) Dimensions & Weight Parameter Specification Width 6.1 mm (0.24 inch) Height 60 mm (2.362 inch) Depth 46.5 mm (1.831 inch) Depth including DIN rail 47 mm Net weight 9.42 g Electrical Specifications (IEC) Parameter Specification Rated cross-section 4 mm² Rated voltage 800 V Rated DC voltage 800 V Rated current 32 A Current at maximum wires 41 A Rated impulse withstand voltage 8 kV Volume resistance 1 mΩ Power loss 1.02 W Pollution severity 3 Connection Data Parameter Specification Connection type Screw connection Number of connections 2 Clamping screw M 3 Stripping length 10 mm Tightening torque, min. 0.5 Nm Tightening torque, max. 1 Nm Blade size 0.6 x 3.5 mm Connection direction on side (horizontal) Clamping range, min. 0.13 mm² Clamping range, max. 6 mm² Wire Connection Cross-Sections Conductor Type Min Max Solid wire 0.5 mm² (AWG 26) 6 mm² (AWG 10) Stranded wire 1.5 mm² 6 mm² Flexible wire 0.5 mm² 6 mm² Fine-stranded with ferrule 0.5 mm² 4 mm² Twin wire-end ferrules 0.5 mm² 2.5 mm² Material & Environmental Parameter Specification Material Wemid Colour blue Flammability rating UL 94 V-0 Continuous operating temp., min. -60 °C Continuous operating temp., max. 130 °C Storage temperature -25 °C...55 °C Hazardous Location Ratings (ATEX/IECEx) Parameter Specification Explosion-tested version Yes Certificate No. (ATEX) DEMKO14ATEX1338U Certificate No. (IECEX) IECEXULD14.0005U Max. voltage (ATEX/IECEX) 690 V Current (ATEX/IECEX) 32 A Wire cross section max. (ATEX/IECEX) 4 mm² Marking EN 60079-7 Ex eb II C Gb Ex 2014/34/EU label II 2 G D UL/cURus Ratings Parameter Specification Certificate No. (UR) E60693 Wire size (UR) 26...10 AWG Voltage (UR) 600 V Current (UR) 35 A CSA Ratings Parameter Specification Certificate No. (CSA) 200039-1057876 Wire size (CSA) 26...10 AWG Voltage (CSA) 600 V Current (CSA) 35 A Mounting & Configuration Parameter Specification Mounting rail TS 35 Mounting type Snap-on End cover plate required Yes Open sides right Number of potentials 1 Number of levels 1 N-function Yes PE function No PEN function No Standards IEC 60947-7-1 RoHS status Compliant without exemption