
2-conductor through terminal block; 2.5 mm²; center marking; for DIN-rail 35 x 15 and 35 x 7.5; CAGE CLAMP®; 2,50 mm²; gray
2-conductor through terminal block; 2.5 mm²; suitable for Ex i applications; center marking; for DIN-rail 35 x 15 and 35 x 7.5; CAGE CLAMP®; 2,50 mm²; blue
Through terminal block, 280 Series, blue
This through terminal block (item number 280-904) streamlines wire connections, making them both quick and easy. Strip lengths must be between 8 and 9 mm when connecting conductors to this through terminal block. Whether for industrial or building applications, you can use our through terminal blocks to connect electrical conductors quickly and safely. We offer variants for both classic through-wiring and potential distribution. This product incorporates conductor terminals and utilizes CAGE CLAMP®. Our CAGE CLAMP® connection offers a convenient and maintenance-free way to connect all types of conductors. You do not need to prepare the conductor in any way, such as crimping ferrules. This through terminal block is suitable for conductor cross sections ranging from 0.08 mm² to 2.5 mm².
This through rail-mount terminal block is operated with an operating tool.
| Ratings per | IEC/EN 60947-7-1 |
| Nominal voltage (III/3) | 800 V |
| Rated impulse withstand voltage (III / 3) | 8 kV |
| Rated current | 24 A |
| Legend (ratings) | (III / 3) ≙ Overvoltage category III / Pollution degree 3 |
| Ratings per | IEC/EN 60947-7-1 / IEC/EN 60947-7-1 / IEC/EN 60947-7-1 |
| Overvoltage category | III / III / II |
| Pollution degree | 3 / 2 / 2 |
| Nominal voltage | 800 V |
| Rated impulse withstand voltage | 8 kV |
| Rated current | 24 A |
| Approvals per | UL 1059 |
| Rated voltage UL (Use Group C) | 600 V |
| Rated current UL (Use Group C) | 20 A |
| Approvals per | UL 1059 / UL 1059 / UL 1059 |
| Use group | B / C / D |
| Rated voltage | 600 V |
| Rated current | 20 A |
| Approvals per | CSA 22.2 No 158 |
| Rated voltage CSA (Use Group C) | 600 V |
| Rated current CSA (Use Group C) | 24 A |
| Approvals per | CSA 22.2 No 158 / CSA 22.2 No 158 / CSA 22.2 No 158 |
| Use group | B / C / D |
| Rated voltage | 600 V |
| Rated current | 24 A |
| Power loss, per pole (potential) | 0.766 W |
| Rated current I<sub>N</sub> for power loss specification | 24 A |
| Resistance value for specified, current-dependent power loss | 0.001 Ω |
| Wiring direction | Front-entry wiring |
| Clamping units | 2 |
| Total number of potentials | 1 |
| Number of levels | 1 |
| Connection technology | CAGE CLAMP® |
| Actuation type | Operating tool |
| Connectable conductor materials | Copper, Aluminum |
| Connectable conductor materials (note) | Terminating Aluminum ConductorsWAGO Spring-Clamp Terminal Blocks are suitable for solid aluminum conductors up to 4 mm²/12 AWG if WAGO “Alu-Plus” Contact Paste 249-130 is used for termination.“Alu-Plus” Contact Paste Advantages:Automatically destroys the oxide film during clamping.Prevents fresh oxidation at the clamping point.Prevents electrolytic corrosion between aluminum and copper conductors (in the same terminal block).Provides long-term protection against corrosion.Using terminal blocks with CAGE CLAMP® Spring Pressure Connection Technology, aluminum conductors must first be cleaned with a blade and then immediately inserted into the clamping units filled with “Alu-Plus” contact paste.It is also possible to apply WAGO “Alu-Plus” additionally on the whole surface of the aluminum conductor before termination.Please note that the nominal currents must be adapted to the reduced conductivity of the aluminum conductors:2.5 mm² = 16 A4 mm² = 22 A |
| Solid conductor | 0.08 … 2.5 mm² / 28 … 12 AWG |
| Fine-stranded conductor | 0.08 … 2.5 mm² / 28 … 12 AWG |
| Note (conductor cross-section) | 12 AWG: THHN, THWN |
| Strip length | 8 … 9 mm / 0.31 … 0.35 inches |
| Wiring direction | Front-entry wiring |
| Width | 5 mm / 0.197 inches |
| Height | 53 mm / 2.087 inches |
| Depth from upper-edge of DIN-rail | 28 mm / 1.102 inches |
| Mounting type | DIN-35 rail |
| Marking level | Center marking |
| Note (material data) | Information on material specifications can be found here |
| Color | blue |
| Material group | I |
| Insulation material (main housing) | Polyamide (PA66) |
| Flammability class per UL94 | V0 |
| Fire load | 0.078 MJ |
| Weight | 5.7 g |
| Processing temperature | -35 … +85 °C |
| Continuous operating temperature | -60 … +105 °C |
| PU (SPU) | 100 pcs |
| Packaging type | box |
| Country of origin | DE |
| GTIN | 4044918391870 |
| Customs tariff number | 85369010000 |
| UNSPSC | 39121410 |
| eCl@ss 10.0 | 27-14-11-20 |
| eCl@ss 9.0 | 27-14-11-20 |
| ETIM 9.0 | EC000897 |
| ETIM 10.0 | EC000897 |
| ECCN | NO US CLASSIFICATION |
| RoHS Compliance Status | Compliant,No Exemption |
280-904 is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.
Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.
Yes — mention it when you request a quote for 280-904 and we'll include express shipping options in our reply.
For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for 280-904, subject to availability and destination.

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