DEHN DEHNshield DSH TT 2P 255 Combined Type 1+2 Surge Protection Device, 2 Module Single Phase TT/TN
- Brand:
- DEHN
- Part number:
- 941110
- EAN:
- 4013364275331
Compact two-module Type 1+2 arrester for TT and TN installations at single phase, using a 1+1 circuit and able to protect terminal equipment directly.
- Compact combined Type 1+2 protection
- Single-phase TT and TN, 1+1 circuit
- Itotal 25kA, UP 1.5kV
- Only two DIN modules
- Protects terminal equipment
2 in 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.
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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 1+2 |
|---|---|
| Total discharge current (Itotal) | 25 kA |
| Voltage protection level (Up) | 1.5 kV |
Dimensions
| DIN rail width | 2 modules |
|---|
Fit
| Mounting | DIN rail |
|---|
Identification
| Brand | DEHN |
|---|---|
| Part number | 941110 |
| EAN | 4013364275331 |
| Range | DEHNshield |
More technical data
| Manufacturer | DEHN (DEHNshield, type DSH TT 2P 255) |
|---|---|
| SPD class | Type 1 / Class I to EN 61643-11 / IEC 61643-1 |
| Nominal a.c. voltage (UN) | 230V; max continuous operating voltage (UC): 255V |
| Lightning impulse current L+N-PE Itotal (10/350) | 25kA; Iimp 12.5kA (L-N) / 25kA (N-PE) |
| Nominal discharge current In (8/20) | 12.5kA (L-N) / 25kA (N-PE) |
| Voltage protection level UP | 1.5kV; response time 100ns |
| Follow current extinguishing capability | 10kArms (L-N), 100Arms (N-PE) |
| EAN as supplied | 4013364275331 |
- Max mains-side overcurrent protection 160A gL/gG; width 2 modules, IP20, -40 to +80C
Product details
DEHNshield puts combined Type 1 and Type 2 protection into two DIN modules instead of four. The DSH TT 2P 255 is the single-phase TT and TN version: a prewired spark-gap arrester with a 25kA total lightning impulse rating, aimed at compact installations with straightforward requirements.
Key features
- Combined Type 1 and Type 2 protection in a two-module footprint
- 1+1 circuit covering TT and TN-S installations at single phase, supplied prewired
- Lightning impulse current of 12.5kA (L-N) and 25kA (N-PE), 25kA total
- Voltage protection level of 1.5kV, capable of protecting terminal equipment
- Accepts 1.5 to 35mm2 stranded conductors behind a 160A gL/gG backup fuse
Typical applications
Application-optimised for compact and simply equipped installations: small commercial units, single-phase intake positions in domestic and light commercial property, farm buildings, garden offices and outbuildings on a TT earth, and packaged plant with an incoming single-phase supply. Where the board is small and a four-module arrester will not fit, this is the practical Type 1 option.
Compliance
Tested as a Type 1 / Class I device to EN 61643-11 and IEC 61643-1, with a UL 94 V-0 enclosure and IP20 protection. Energy coordination is declared with Type 2 equipment and, within 5m, with Type 3 equipment. BS 7671 requires transient overvoltage risk to be assessed, with Type 1 protection where partial lightning current may enter the installation.
Order today for fast UK dispatch on genuine DEHN combined arresters at trade-direct prices.
