Properties
| Version | Bolt-type screw terminals, Feed-through terminal, Rated cross-section: 300 mm², Threaded stud connection |
| Order No. | 1878650000 |
| Type | WFF 300/AH O.PS |
| GTIN (EAN) | 4032248481194 |
| Qty. | 6 items |
| Depth | 85.5 mm |
| Depth (inches) | 3.366 inch |
| Depth including DIN rail | 94 mm |
| Height | 163 mm |
| Height (inches) | 6.417 inch |
| Width | 55 mm |
| Width (inches) | 2.165 inch |
| Net weight | 559.68 g |
| Storage temperature | -25 °C...55 °C |
| 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 | dark beige |
| UL 94 flammability rating | V-0 |
| End cover plate required | No |
| Number of levels | 1 |
| Number of clamping points per level | 2 |
| Levels cross-connected internally | No |
| PE connection | No |
| Rail | TS 35 |
| N-function | No |
| PE function | No |
| PEN function | No |
| Explosion-tested version | Yes |
| Open sides | closed |
| Snap-on | Yes |
| Type of mounting | TS 35 |
| 2 x cable lugs DIN 46 234 | 25 to 240 mm² |
| 2 x cable lugs DIN 46 235 | 50...240 mm² |
| Cable lug to DIN 46234 | 25...240 mm² |
| Cable lug to DIN 46235 | 50...300 mm² |
| Clamping range, max. | 300 mm² |
| Clamping range, min. | 25 mm² |
| Connection cross-section, stranded, max. | 300 mm² |
| Connection cross-section, stranded, min. | 25 mm² |
| Connection direction | on side |
| Number of connections | 2 |
| Stud size for spade connection | M 16 |
| Tightening torque, max. | 60 Nm |
| Tightening torque, min. | 25 Nm |
| Type of connection | Threaded stud connection |
| Wire connection cross section, finely stranded, max. | 240 mm² |
| Wire connection cross section, finely stranded, min. | 25 mm² |
| Wire connection cross-section, solid core, max. | 240 mm² |
| Wire connection cross-section, solid core, min. | 25 mm² |
| Rail | TS 35 |
| Rated cross-section | 300 mm² |
| Rated voltage | 1,000 V |
| Rated DC voltage | 1,500 V |
| Rated current | 520 A |
| Volume resistance according to IEC 60947-7-x | 0.06 mΩ |
| Rated impulse withstand voltage | 8 kV |
| Power loss in accordance with IEC 60947-7-x | 16.64 W |
| Pollution severity | 3 |
| Surge voltage category | III |
| Certificate No. (UR) | E60693 |
| Conductor size Factory wiring max. (UR) | 600 kcmil |
| Conductor size Factory wiring min. (UR) | 6 AWG |
| Conductor size Field wiring max. (UR) | 600 kcmil |
| Conductor size Field wiring min. (UR) | 6 AWG |
| Current size C (UR) | 500 A |
| Voltage size C (UR) | 1000 V |
| Product information | Cover without testhole |
| Approval/Certificate/Document of Conformity |
[CB Certificate](https://mdcop.weidmueller.com/mediadelivery/asset/900_89217)
[CCC Ex Certificate](https://mdcop.weidmueller.com/mediadelivery/asset/900_178480) [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_64537) |
| Eplan Data Portal | [Eplan data](https://dataportal.eplan.com/part-details/WEI.1878650000) |
| CADENAS eCATALOG | [CAX data](https://weidmueller-embedded.partcommunity.com?catalog=weidmueller_qs&part=1878650000) |
| Product Change Notification | [PCN WFF](https://mdcop.weidmueller.com/mediadelivery/asset/900_296476) |
| User Documentation |
[StorageConditionsTerminalBlocks](https://mdcop.weidmueller.com/mediadelivery/asset/900_87149)
[WFF range for 1500 VDC applications](https://mdcop.weidmueller.com/mediadelivery/asset/900_156620) [DIRECT MOUNTING WFF TERMINAL BLOCKS](https://mdcop.weidmueller.com/mediadelivery/asset/900_164386) |
| 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 |
| Certificate No. (cURusEX) | E184763 |