Key Technical Parameters Parameter Specification Order No. 1028900000 Type WDU 16/ZA Version Feed-through terminal block, Screw connection, dark beige, 16 mm², 76 A, 1000 V, Number of connections: 2 GTIN (EAN) 4008190034443 Dimensions & Weight Parameter Specification Width 11.9 mm Height 60 mm Depth 62.5 mm Depth including DIN rail 63 mm Net weight 29.22 g Electrical Specifications (IEC) Parameter Specification Rated cross-section 16 mm² Rated voltage 1000 V Rated DC voltage 1000 V Rated current 76 A Current at maximum wires 101 A Rated impulse withstand voltage 8 kV Volume resistance 0.42 mΩ Power loss 2.43 W Pollution severity 3 Connection Data Parameter Specification Connection type Screw connection Number of connections 2 Number of clamping points per level 2 Clamping screw M 5 Stripping length 16 mm Tightening torque 3.0 - 4.0 Nm Blade size 1.0 x 5.5 mm Solid core wire 1.5...16 mm² (AWG 18...4) Stranded wire 1.5...25 mm² Fine-stranded wire with ferrule 1.5...16 mm² Twin wire-end ferrules 1.5...10 mm² Clamping range, max. 25 mm² Clamping range, min. 0.82 mm² Material & Environmental Parameter Specification Material Wemid Color Dark beige (standard) / Blue (BL version) 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) 76 A Wire cross section max. (ATEX/IECEX) 16 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 (UL) 18...4 AWG Voltage (UL) 600 V Current (UL) 85 A CSA Ratings Parameter Specification Certificate No. (CSA) 200039-1057876 Wire size (CSA) 18...6 AWG Voltage (CSA) 600 V Current (CSA) 85 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 PE connection No PEN function Yes Standards IEC 60947-7-1 RoHS status Compliant without exemption Blue Version (WDU 16/ZA BL) Additional Specifications Parameter Specification Order No. 1028980000 Color Blue N-function Yes PE function No Net weight 29.68 g