DEHN Combined Type 1+2 Surge Protection Device, 8 Module Three Phase TT/TN
- Brand:
- DEHN
- Part number:
- 951310
- EAN:
- 4013364128545
Eight-module combined lightning current and surge arrester for three-phase TT and TN installations, fitted at the origin to handle partial lightning currents.
- Combined Type 1+2 protection
- Three-phase TT and TN
- Eight DIN modules
- Origin-of-installation device
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 | Three 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 |
|---|
Dimensions
| DIN rail width | 8 modules |
|---|
Construction
| Replaceable protection module | Yes |
|---|
Fit
| Mounting | DIN rail |
|---|
Identification
| Brand | DEHN |
|---|---|
| Part number | 951310 |
| EAN | 4013364128545 |
| Range | DEHNventil |
More technical data
| SPD class | combined Type 1 and Type 2 |
|---|---|
| Configuration | three phase, TT/TN earthing systems |
| Width | 8 DIN modules |
| Format | modular arrester with pluggable protection modules |
Product details
Three-phase intake positions on exposed sites need an arrester that can take partial lightning current, not just switching surges. This eight-module DEHN combined Type 1 and 2 device covers three lines plus neutral on TT and TN systems and handles both duties in a single assembly.
Key features
- Combined Type 1 and Type 2 protection for three-phase TT and TN installations
- Eight DIN modules covering three line poles plus the neutral path
- Installed at the origin, upstream of the distribution boards it protects
- Modular construction, so individual protection modules can be replaced in service
- Avoids having to install separate Type 1 and Type 2 devices at the intake
Typical applications
This is the intake arrester for industrial and infrastructure sites: factories and warehouses with an external lightning protection system, water and wastewater treatment works, agricultural estates, telecoms and broadcast compounds, quarries and outdoor process plant, and any three-phase supply taken from overhead lines on an exposed site.
Compliance
Combined Type 1 and Type 2 devices are classified under the BS EN 61643-11 series and are installed at the origin of the installation. BS 7671 requires the risk from transient overvoltages to be assessed, with Type 1 protection where partial lightning current may enter the installation and coordinated Type 2 protection at distribution level.
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