Properties
| Version | Multi-tier modular terminal, Screw connection, blue, 2.5 mm², 400 V, 400 V, Number of connections: 4, Number of levels: 2, TS 35, V-0, Wemid |
| Order No. | 1021580000 |
| Type | WDK 2.5 BL |
| GTIN (EAN) | 4008190038991 |
| Qty. | 100 items |
| Depth | 63 mm |
| Depth (inches) | 2.48 inch |
| Depth including DIN rail | 63 mm |
| Height | 69.5 mm |
| Height (inches) | 2.736 inch |
| Width | 5.1 mm |
| Width (inches) | 0.201 inch |
| Net weight | 12.33 g |
| Storage temperature | -25 °C...55 °C |
| Operating temperature range | For operating temperature range see EC Design Test Certificate / IEC Ex-Certificate of Conformity |
| Continuous operating temp., min. | -60 °C |
| Continuous operating temp., max. | 130 °C |
| RoHS Compliance Status | Compliant without exemption |
| REACH SVHC | No SVHC above 0.1 wt% |
| Material | Wemid |
| Colour | blue |
| UL 94 flammability rating | V-0 |
| Certificate No. (ATEX) | DEMKO15ATEX1346U |
| Certificate No. (IECEX) | IECEXULD15.0003U |
| Max. voltage (ATEX) | 275 V |
| Current (ATEX) | 21 A |
| Wire cross section max. (ATEX) | 4 mm² |
| Max. voltage (IECEX) | 275 V |
| Current (IECEX) | 21 A |
| Wire cross section max. (IECEX) | 4 mm² |
| Operating temperature range | For operating temperature range see EC Design Test Certificate / IEC Ex-Certificate of Conformity |
| Marking EN 60079-7 | Ex eb II C Gb |
| Ex 2014/34/EU label | II 2 G D |
| Version |
Screw connection
for screwable cross-connection One end without connector |
| End cover plate required | Yes |
| Number of potentials | 2 |
| Number of levels | 2 |
| Number of clamping points per level | 2 |
| Number of potentials per tier | 1 |
| Levels cross-connected internally | No |
| PE connection | No |
| Rail | TS 35 |
| N-function | Yes |
| PE function | No |
| PEN function | No |
| Wire connection cross section, finely stranded with wire-end ferrules DIN 46228/1, 2 clampable wires, max. | 1.5 mm² |
| Wire connection cross section, finely stranded with wire-end ferrules DIN 46228/1, 2 clampable wires, min. | 0.5 mm² |
| Wire connection cross section, finely stranded, two clampable wires, min. | 0.5 mm² |
| Wire cross-section, finely stranded, two clampable wires, max. | 1.5 mm² |
| Explosion-tested version | Yes |
| Number of similar terminals | 1 |
| Open sides | right |
| Type of mounting | Snap-on |
| Connection type, additional connection | Screw connection |
| Blade size | 0.6 x 3.5 mm |
| Clamping range, max. | 4 mm² |
| Clamping range, min. | 0.05 mm² |
| Clamping screw | M 2.5 |
| Connection cross-section, stranded, max. | 4 mm² |
| Connection cross-section, stranded, min. | 1.5 mm² |
| Connection direction | on side |
| Gauge to IEC 60947-1 | A3 |
| Number of connections | 4 |
| Stripping length | 10 mm |
| Tightening torque, max. | 0.6 Nm |
| Tightening torque, min. | 0.4 Nm |
| Torque level with DMS electric screwdriver | 1 |
| Type of connection | Screw connection |
| Type of connection 2 | Screw connection |
| Wire connection cross section AWG, max. | AWG 12 |
| Wire connection cross section AWG, min. | AWG 30 |
| Wire connection cross section, finely stranded, max. | 4 mm² |
| Wire connection cross section, finely stranded, min. | 0.5 mm² |
| Wire connection cross-section, finely stranded with wire-end ferrules DIN 46228/1, max. | 2.5 mm² |
| Wire connection cross-section, finely stranded with wire-end ferrules DIN 46228/1, min. | 0.5 mm² |
| Wire connection cross-section, finely stranded with wire-end ferrules DIN 46228/4, max. | 2.5 mm² |
| Wire connection cross-section, finely stranded with wire-end ferrules DIN 46228/4, min. | 0.5 mm² |
| Wire connection cross-section, solid core, max. | 4 mm² |
| Wire connection cross-section, solid core, min. | 0.5 mm² |
| Certificate No. (CSA) | 12400-135 |
| Current size C (CSA) | 10 A |
| Voltage size C (CSA) | 300 V |
| Wire cross section max. (CSA) | 12 AWG |
| Wire cross section min. (CSA) | 26 AWG |
| Rail | TS 35 |
| Standards | IEC 60947-7-1 |
| Wire connection cross section AWG, max. | AWG 12 |
| Wire connection cross section AWG, min. | AWG 30 |
| Rated cross-section | 2.5 mm² |
| Rated voltage | 400 V |
| Rated DC voltage | 400 V |
| Rated current | 24 A |
| Current at maximum wires | 32 A |
| Standards | IEC 60947-7-1 |
| Volume resistance according to IEC 60947-7-x | 1.33 mΩ |
| Rated impulse withstand voltage | 6 kV |
| Power loss in accordance with IEC 60947-7-x | 0.77 W |
| Pollution severity | 3 |
| Certificate No. (UR) | E60693 |
| Conductor size Factory wiring max. (UR) | 12 AWG |
| Conductor size Factory wiring min. (UR) | 22 AWG |
| Conductor size Field wiring max. (UR) | 12 AWG |
| Conductor size Field wiring min. (UR) | 22 AWG |
| Current size B (UR) | 20 A |
| Current size C (UR) | 20 A |
| Voltage size B (UR) | 300 V |
| Voltage size C (UR) | 300 V |
| Approval/Certificate/Document of Conformity |
[Attestation of Conformity](https://mdcop.weidmueller.com/mediadelivery/asset/900_35709)
[UKCA Ex Attestation of Conformity](https://mdcop.weidmueller.com/mediadelivery/asset/900_253965) [DNV Certificate](https://mdcop.weidmueller.com/mediadelivery/asset/900_320351) [CE Declaration of Conformity](https://mdcop.weidmueller.com/mediadelivery/asset/900_37643) [UKCA declaration of conformity](https://mdcop.weidmueller.com/mediadelivery/asset/900_284527) [Confirmation of Standards EN 45545-2_2020-10](https://mdcop.weidmueller.com/mediadelivery/asset/900_308425) [IECEx Certificate](https://mdcop.weidmueller.com/mediadelivery/asset/900_76891) [ATEX Certificate](https://mdcop.weidmueller.com/mediadelivery/asset/900_76893) [CB Test Certificate](https://mdcop.weidmueller.com/mediadelivery/asset/900_89271) [CB Certificate](https://mdcop.weidmueller.com/mediadelivery/asset/900_89275) [Lloyds Register Certificate](https://mdcop.weidmueller.com/mediadelivery/asset/900_153735) [NEMKO Certificate](https://mdcop.weidmueller.com/mediadelivery/asset/900_156621) [CCC Ex Certificate](https://mdcop.weidmueller.com/mediadelivery/asset/900_178479) [UKCA Ex Certificate](https://mdcop.weidmueller.com/mediadelivery/asset/900_253966) |
| Engineering Data | [CAD data -- STEP](https://mdcop.weidmueller.com/mediadelivery/asset/900_59620) |
| Eplan Data Portal | [Eplan data](https://dataportal.eplan.com/part-details/WEI.1021580000) |
| CADENAS eCATALOG | [CAX data](https://weidmueller-embedded.partcommunity.com?catalog=weidmueller_qs&part=1021580000) |
| WSCAD Universe | [WSCAD data](https://wscaduniverse.com/part-detail?manufacturerId=88&type=0&partNumber=1021580000&norm=0) |
| User Documentation |
[Usage of terminals in EXi atmospheres](https://mdcop.weidmueller.com/mediadelivery/asset/900_73881)
[StorageConditionsTerminalBlocks](https://mdcop.weidmueller.com/mediadelivery/asset/900_87149) [NTI WDK 2.5 DU PE](https://mdcop.weidmueller.com/mediadelivery/asset/900_102817) |
| Catalogues | [Catalogues in PDF-format](LINK/Catalog.html) |
| ETIM 6.0 | EC000897 |
| ETIM 7.0 | EC000897 |
| ETIM 8.0 | EC000897 |
| ETIM 9.0 | EC000897 |
| ECLASS 9.0 | 27-14-11-20 |
| ECLASS 9.1 | 27-14-11-20 |
| ECLASS 10.0 | 27-14-11-20 |
| ECLASS 11.0 | 27-14-11-20 |
| ECLASS 12.0 | 27-14-11-20 |
| ECLASS 13.0 | 27-25-01-02 |
| ECLASS 14.0 | 27-25-01-02 |
| Approvals |               |
| ROHS | Conform |
| UL File Number Search | [UL Website](LINK/UL_search.html) |
| Certificate No. (UR) | E60693 |
| Certificate No. (cURusEX) | E184763 |