Properties
| Version | W-Series, Feed-through terminal, Rated cross-section: 1 mm², Flat-blade connection |
| Order No. | 1021900000 |
| Type | WDU 2.5 FF 2X2.8 |
| GTIN (EAN) | 4008190138516 |
| Qty. | 100 items |
| Depth | 46.25 mm |
| Depth (inches) | 1.821 inch |
| Depth including DIN rail | 47 mm |
| Height | 60 mm |
| Height (inches) | 2.362 inch |
| Width | 5.1 mm |
| Width (inches) | 0.201 inch |
| Net weight | 6.93 g |
| Storage temperature | -25 °C...55 °C |
| Continuous operating temp., min. | -50 °C |
| Continuous operating temp., max. | 120 °C |
| RoHS Compliance Status | Compliant without exemption |
| REACH SVHC | No SVHC above 0.1 wt% |
| Material | Wemid |
| Colour | dark beige |
| UL 94 flammability rating | V-0 |
| Version |
With cable lug connection F2.8
Both sides pluggable One end without connector |
| End cover plate required | Yes |
| Number of potentials | 1 |
| Number of levels | 1 |
| Number of clamping points per level | 0 |
| Number of potentials per tier | 1 |
| Levels cross-connected internally | No |
| PE connection | No |
| Rail | TS 35 |
| N-function | No |
| PE function | No |
| PEN function | No |
| Explosion-tested version | No |
| Number of similar terminals | 1 |
| Open sides | right |
| Type of mounting | Snap-on |
| Connection type, additional connection | Flat-blade connection |
| Clamping range, max. | 1 mm² |
| Connection cross-section, stranded, max. | 4 mm² |
| Connection cross-section, stranded, min. | 0.5 mm² |
| Connection direction | top |
| Number of connections | 4 |
| Type of connection | Flat-blade connection |
| Wire connection cross section, finely stranded, max. | 4 mm² |
| Wire connection cross section, finely stranded, 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 61210
In accordance with IEC 60947-7-1 |
| Cable-lug connection | Not slit |
| Rated cross-section | 1 mm² |
| Rated voltage | 500 V |
| Rated DC voltage | 500 V |
| Rated current | 12 A |
| Current at maximum wires | 12 A |
| Standards |
IEC 61210
In accordance with IEC 60947-7-1 |
| Volume resistance according to IEC 60947-7-x | 2.37 mΩ |
| Rated impulse withstand voltage | 6 kV |
| Power loss in accordance with IEC 60947-7-x | 0.43 W |
| Pollution severity | 3 |
| Certificate No. (UR) | E60693 |
| Conductor size Factory wiring max. (UR) | 14 AWG |
| Conductor size Factory wiring min. (UR) | 22 AWG |
| Conductor size Field wiring max. (UR) | 14 AWG |
| Conductor size Field wiring min. (UR) | 22 AWG |
| Current size B (UR) | 16 A |
| Current size C (UR) | 16 A |
| Voltage size B (UR) | 250 V |
| Voltage size C (UR) | 300 V |
| Approval/Certificate/Document of Conformity |
[NEMKO certificate](https://mdcop.weidmueller.com/mediadelivery/asset/900_152186)
[Lloyds Register Certificate](https://mdcop.weidmueller.com/mediadelivery/asset/900_153724) [CE Declaration of Conformity](https://mdcop.weidmueller.com/mediadelivery/asset/900_37198) [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) |
| Engineering Data | [CAD data -- STEP](https://mdcop.weidmueller.com/mediadelivery/asset/900_59627) |
| Eplan Data Portal | [Eplan data](https://dataportal.eplan.com/part-details/WEI.1021900000) |
| CADENAS eCATALOG | [CAX data](https://weidmueller-embedded.partcommunity.com?catalog=weidmueller_qs&part=1021900000) |
| User Documentation | [StorageConditionsTerminalBlocks](https://mdcop.weidmueller.com/mediadelivery/asset/900_87149) |
| 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 | 27-25-01-01 |
| ECLASS 14.0 | 27-25-01-01 |
| Approvals |       |
| ROHS | Conform |
| UL File Number Search | [UL Website](LINK/UL_search.html) |
| Certificate No. (UR) | E60693 |