DEHN DEHNguard DG TT 2P 5 275 Compact Type 2 Surge Protection Device, 1 Module Single Phase TT/TN
- Brand:
- DEHN
- Part number:
- 900450
- EAN:
- 5056551244368
Compact single-phase Type 2 surge arrester for TT and TN systems in a single DIN module, intended for consumer units and small boards with only one spare way.
- Compact single-phase Type 2 protection
- TT and TN systems
- In 5kA L-N / 20kA N-PE, UP 1.5kV
- Single DIN module
- Consumer unit retrofit
Out of stock
UK delivery £9.95 ex VAT, free on orders of £100 ex VAT or more; usually 2-3 working days.
Minimum order £50 ex VAT. All prices exclude VAT, which is added at checkout.
Project quantities or a lead time to check? Request a quote
Specifications
Electrical
| Supply | Single phase |
|---|---|
| Earthing system | TT, TN-S, TN-C-S (PME) |
| Earthing system (as supplied) | TT/TN |
| Remote signalling contact | No |
| Application | Mains AC |
Protection
| SPD type | Type 2 |
|---|---|
| Nominal discharge current (In) | 5 kA |
| Voltage protection level (Up) | 1.5 kV |
Dimensions
| DIN rail width | 1 module |
|---|
Fit
| Mounting | DIN rail |
|---|
Identification
| Brand | DEHN |
|---|---|
| Part number | 900450 |
| EAN | 5056551244368 |
| Range | DEHNguard compact |
More technical data
| Manufacturer | DEHN (DEHNguard 5kA, type DG TT 2P 5 275) |
|---|---|
| SPD class | Type 2 to EN 61643-11 |
| Power supply system | single-phase TT / TN |
| Nominal a.c. voltage (UN) | 230V; UC 275V (L-N), 255V (N-PE) |
| Nominal discharge current In (8/20) | 5kA (L-N), 20kA (N-PE) |
| Max discharge current Imax (8/20) | 15kA (L-N), 40kA (N-PE) |
| Voltage protection level UP | 1.5kV; short-circuit withstand ISCCR 6kA |
| Max mains-side overcurrent protection | MCB C 63A; width 1 module, IP20 |
| EAN as supplied | 5056551244368 |
Product details
One spare way is often all a consumer unit has left, and that is exactly the gap this arrester is built for. The DG TT 2P 5 275 delivers single-phase TT and TN Type 2 protection from a single DIN module, making it a realistic retrofit for boards that were never designed with surge protection in mind.
Key features
- Single-phase TT and TN protection in one DIN module
- Realistic retrofit option for consumer units and small distribution boards
- N-PE path rated In 20kA and Imax 40kA with 100A follow current extinguishing
- Green/red operating state window for straightforward inspection
- Terminals accept 0.75 to 10mm2 solid conductors, suited to domestic board wiring
Typical applications
Typical uses are domestic consumer units, flats and apartment boards, small office and retail units, garden rooms and outbuildings on a TT earth, and packaged equipment panels with a single spare way. It suits properties where the risk assessment calls for surge protection but a two- or four-module device simply will not go in without changing the board.
Compliance
Tested as a Type 2 device to EN 61643-11, with a UL 94 V-0 thermoplastic enclosure and IP20 protection. BS 7671 requires the risk from transient overvoltages to be assessed and protection provided where the consequences justify it; check the lower L-N discharge ratings against your design intent.
Order today for fast UK dispatch, or ask us to check the compact ratings against your board before you order.
