DEHN Type 3 Surge Protection Device, 2 Module Three Phase 25A
- Brand:
- DEHN
- Part number:
- 953400
- EAN:
- 4013364115767
Three-phase Type 3 surge arrester in two DIN modules, rated for a 25A load current, fitted close to sensitive three-phase equipment as the final protection stage.
- Type 3 point-of-use protection
- Three phase, 25A load rating
- Two DIN modules
- Protects drives and machine controls
1 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
| Rated current | 25 A |
|---|---|
| Supply | Three phase |
| Earthing system | TT, TN-S, TN-C-S (PME) |
| Earthing system (as supplied) | All earthing systems |
| Remote signalling contact | No |
| Application | Mains AC |
Protection
| SPD type | Type 3 |
|---|
Dimensions
| DIN rail width | 2 modules |
|---|
Construction
| Replaceable protection module | Yes |
|---|
Fit
| Mounting | DIN rail |
|---|
Identification
| Brand | DEHN |
|---|---|
| Part number | 953400 |
| EAN | 4013364115767 |
| Range | DEHNrail |
More technical data
| SPD class | Type 3 (point-of-use) |
|---|---|
| Configuration | three phase, 25A |
| Width | 2 DIN modules |
Product details
Three-phase equipment needs the same fine protection as single-phase electronics, and this two-module DEHN Type 3 arrester provides it for loads up to 25A. Installed close to the load, it clamps the residual surge energy that gets past the Type 2 device at the distribution board.
Key features
- Type 3 point-of-use protection for three-phase circuits rated up to 25A
- Two DIN modules wide, so it fits the local panel rather than needing a separate enclosure
- Coordinates with Type 1 and Type 2 arresters installed further upstream
- Local status indication makes end of life visible on a routine inspection
- Protects the control electronics inside drives and machine panels, not just the supply
Typical applications
This is the arrester for the machine panel rather than the main board: variable speed drives and soft starters, CNC and machine tool controls, packaging and conveying lines, HVAC and refrigeration plant, and three-phase pump and fan controllers. It is particularly worth fitting where a long sub-main runs across a site and picks up induced surges on the way to the plant it feeds.
Compliance
Type 3 devices are the fine-protection class defined in the BS EN 61643-11 series and must be energy-coordinated with the Type 2 protection upstream. BS 7671 requires the risk from transient overvoltages to be assessed and protection provided where the consequences justify it.
Order today for fast UK dispatch on genuine DEHN surge protection at trade-direct prices.
