Weidmüller part number 2428520000 (A3T 2.5 BL) is a multi-tier modular feed-through terminal block with PUSH IN connection technology, rated 2.5 mm², 800 V, 22 A. This is the blue-coloured version of the A3T 2.5, used to visually separate a circuit or potential on the same DIN rail, with ATEX/IECEx approval for use in explosive risk zones.
Technical Specifications
Electrical Ratings
- Rated cross-section: 2.5 mm²
- Rated voltage: 800 V (800 V DC)
- Nominal current: 22 A
- Rated impulse withstand voltage: 8 kV
- Contact resistance: 1.33 mΩ
- Power loss: 0.77 W
- Pollution severity: 3; surge voltage category: III
Connection and Conductors
- Connection type: PUSH IN (both rated and additional connections)
- Wire connection cross-section: 0.14–2.5 mm² solid core; 0.14–4 mm² finely stranded
- Wire connection range: AWG 28–12
- Stripping length: 10 mm
- Number of levels: 3; potentials: 3; clamping points per level: 2; total connections: 6
- Levels are not cross-connected internally; no PE function
Material and Housing
- Basic material: Wemid
- Colour: blue (operational elements orange)
- UL 94 flammability rating: V-0
- Mounting: TS 35 DIN rail, snap-on fixing
- End cover plate required (sold separately)
- Dimensions (H x W x D): 116 x 5.1 x 64.5 mm; net weight: 20.7 g
Environmental and Approvals
- Continuous operating temperature: -60°C to +130°C
- Storage temperature: -25°C to +55°C
- RoHS compliant without exemption; REACH SVHC: below 0.1 wt%
- ATEX: TUEV16ATEX7909U (max. 550 V, 19 A, up to 2.5 mm²)
- IECEx: IECEXTUR16.0036U (same ratings as ATEX)
- UL/cURus: E60693; cURusEX: E184763
- CSA: 200039-70089609
- Standard: DIN EN 60947-7-1
Applications
Ideal for space-saving, colour-coded multi-level wiring in control cabinets and junction boxes, including explosive-risk-zone (Ex) installations, where the blue colour is used to mark a distinct circuit or potential alongside standard dark beige terminals on the same rail.
Related Weidmüller Products
- A3T 2.5 (same specification, dark beige) – Order No. 2428510000
- A3T 2.5 PE (multi-tier PE terminal, green/yellow) – Order No. 2428550000
- A3T 1.5 (multi-tier terminal, 1.5 mm², 500 V, 15 A) – Order No. 2816930000
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