DEHN Type 2 Surge Protection Device, 4 Module Three Phase TN
- Brand:
- DEHN
- Part number:
- 952400
- EAN:
- 4013364108455
Four-module Type 2 surge arrester for three-phase TN systems, fitted at distribution boards to limit switching and induced overvoltages reaching connected equipment.
- Type 2 protection for three-phase TN
- Four DIN modules
- Pluggable protection modules
- Local status indication
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 | Three phase |
|---|---|
| Earthing system | TN-S, TN-C-S (PME) |
| Earthing system (as supplied) | TN |
| Remote signalling contact | No |
| Application | Mains AC |
Protection
| SPD type | Type 2 |
|---|
Dimensions
| DIN rail width | 4 modules |
|---|
Construction
| Replaceable protection module | Yes |
|---|
Fit
| Mounting | DIN rail |
|---|
Identification
| Brand | DEHN |
|---|---|
| Part number | 952400 |
| EAN | 4013364108455 |
| Range | DEHNguard |
More technical data
| Earthing system | three-phase TN |
|---|---|
| Width | 4 DIN modules |
| Format | modular arrester with pluggable protection modules |
Product details
Three-phase TN boards carry the surges that come in from the network and the ones generated inside the installation by switching. This four-module DEHN Type 2 arrester sits on the rail alongside the outgoing ways and holds those transients down to a level the connected equipment can tolerate.
Key features
- Type 2 protection for three-phase TN-S and TN-C-S distribution boards
- Four DIN modules, mounting directly on the board rail with the outgoing devices
- Pluggable protection modules so a failed pole is replaced without rewiring
- Local status indication makes the protection state visible at a glance
- Second stage in a coordinated scheme behind a Type 1 device at the origin
Typical applications
Use it on three-phase panel boards and sub-mains in commercial and industrial buildings, machinery and process supply panels, plant room boards feeding HVAC and pumps, data and comms sub-distribution, and boards serving drives, PLCs and metering. It is the standard second stage where a Type 1 arrester is already installed at the intake position.
Compliance
Type 2 devices are classified under the BS EN 61643-11 series and are installed at distribution boards to limit switching and induced overvoltages. BS 7671 requires the risk from transient overvoltages to be assessed and coordinated protection provided where the consequences justify it.
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