Phoenix Contact STTB 2,5 is a two-level spring-clamp terminal block for aluminium or copper conductors from 0.08 to 2.5 mm² multi-wired, or up to 4 mm² solid. Rated 22 A at 500 V, the block mounts on 35 mm DIN rail and provides two clamping positions per level for a total of four connections. The 5.2 mm-wide grey housing operates from -60 to 105 °C and is Ex e explosion-tested. A closing plate is required and the unit is supplied in packs of 50.
| Manufacturer part number (MPN) | STTB 2,5 |
| EAN / GTIN | 4017918186814 |
| Sales unit | pcs |
| Package quantity | 50 pcs |
| Suitable for conductor material | Aluminium/copper |
| Connectable conductor cross section solid-core | 0.08–4 mm² |
| Connectable conductor cross section multi-wired | 0.08–2.5 mm² |
| Rated current In | 22 A |
| Rated voltage | 500 V |
| Type of electrical connection 1 | Spring clamp connection |
| Type of electrical connection 2 | Spring clamp connection |
| Number of levels | 2 |
| Number of clamp positions per level | 2 |
| Mounting method | DIN rail (top hat rail) 35 mm |
| Operating temperature | -60–105 °C |
| Width | 5.2 mm |
| Width/grid dimension | 5.2 mm |
| Height | 67.5 mm |
| Depth | 47.5 mm |
| Length | 67.5 mm |
| Explosion-tested version 'Ex e' | Yes |
| Closing plate required | Yes |
| Colour | Grey |
| Internally connected stages | No |
| Country of origin | Germany |
| MOQ | 1 |