4-conductor through terminal block; 2.5 mm²; suitable for Ex e II applications; lateral marker slots; for DIN-rail 35 x 15 and 35 x 7.5; CAGE CLAMP®; 2,50 mm²; light gray
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Quick facts
| Availability | Confirmed on request |
| Category | Rail-Mount Terminal Blocks |
| Lifecycle | active |
| Warranty | 12-month (new) · 3-month (used/refurbished) |
Shipping & availability
When can 280-990 be shipped?
280-990 is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.
Can I pick up 280-990 in person?
Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.
Is express delivery available?
Yes — mention it when you request a quote for 280-990 and we'll include express shipping options in our reply.
My factory is down and I need this urgently — can you help?
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 280-990, subject to availability and destination.
<h2>Through terminal block, 280 Series, light gray</h2><br/><br/>Our through terminal block (item number 280-990) simplifies electrical installations. 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 trusted universal connection known as CAGE CLAMP® leads the way when it comes to connection technology and electrical interconnections. Depending on the conductor type, this through terminal block is suitable for conductor cross sections ranging from 0.08 mm² to 2.5 mm².<br/><br/><h3></h3><br/><br/>This through rail-mount terminal block is operated with an operating tool.<br/>
Specifications
Electrical data - Ratings per IEC/EN
| Ratings per | IEC/EN 60947-7-1 |
| 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 |
Electrical data - Ratings per UL
| 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 |
Electrical data - Ratings per CSA
| 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 |
Electrical data - Ex information
| Reference to hazardous areas | See application instructions in section “Knowledge and Downloads – Documentation – Additional Information: Technical Section; Technical Explications” |
| Rated voltage EN (Ex e II) | 550 V |
| Rated voltage note (Ex e II) | Using staggered jumpers reduces the maximum rated voltage to 275 V. |
| Rated current (Ex e II) | 22 A |
Electrical data - Power Loss
| Power loss, per pole (potential) | 0.644 W |
| Rated current I<sub>N</sub> for power loss specification | 22 A |
| Resistance value for specified, current-dependent power loss | 0.001 Ω |
Electrical data - General information
| Wiring direction | Front-entry wiring |
Connection data
| Clamping units | 4 |
| Total number of potentials | 1 |
| Number of levels | 1 |
Connection data - Connection 1
| Connection technology | CAGE CLAMP® |
| Actuation type | Operating tool |
| Connectable conductor materials | Copper |
| 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 |
Physical data
| Width | 5 mm / 0.197 inches |
| Height | 73 mm / 2.874 inches |
| Depth from upper-edge of DIN-rail | 28 mm / 1.102 inches |
Mechanical data
| Mounting type | DIN-35 rail |
| Marking level | Side marking |
Material data
| Note (material data) | Information on material specifications can be found here |
| Color | light gray |
| Material group | I |
| Insulation material (main housing) | Polyamide (PA66) |
| Flammability class per UL94 | V0 |
| Fire load | 0.133 MJ |
| Weight | 8.3 g |
Environmental requirements
| Processing temperature | -35 … +85 °C |
| Continuous operating temperature | -60 … +105 °C |
Commercial data
| Product Group | 1 (Rail Mounted Terminal Blocks) |
| PU (SPU) | 100 pcs |
| Packaging type | box |
| Country of origin | DE |
| GTIN | 4044918391450 |
| Customs tariff number | 85369010000 |
Product Classification
| 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 |
Environmental Product Compliance
| RoHS Compliance Status | Compliant,No Exemption |





