DEHN DEHNflex DFL M 255 Type 3 Surge Protection Device, Flush Mount Single Phase with Buzzer
- Brand:
- DEHN
- Part number:
- 924396
- EAN:
- 4013364091016
Compact Type 3 surge arrester that fits inside a flush box, trunking or cable duct, with an audible fault signal. Protects terminal equipment where there is no room for a DIN rail device.
- Flush-mount Type 3 protection
- Fits back boxes, ducts and trunking
- Audible end-of-life alarm
- In 1.5kA, UP 1250V L-N
- Just 30 x 50 x 11mm
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) | All earthing systems |
| Remote signalling contact | No |
| Application | Mains AC |
Protection
| SPD type | Type 3 |
|---|---|
| Nominal discharge current (In) | 1.5 kA |
| Voltage protection level (Up) | 1.25 kV |
Dimensions
| DIN rail width | Flush box (not DIN) |
|---|
Fit
| Mounting | Flush |
|---|
Identification
| Brand | DEHN |
|---|---|
| Part number | 924396 |
| EAN | 4013364091016 |
| Range | DEHNflex |
More technical data
| Manufacturer | DEHN (DEHNflex, type DFL M 255) |
|---|---|
| SPD class | Type 3 to EN 61643-11 / Class III to IEC 61643-1/-11 |
| Nominal a.c. voltage (UN) | 230V; max continuous operating voltage (UC): 255V |
| Nominal discharge current In (8/20) | 1.5kA; total discharge current 3kA |
| Combined impulse UOC | 3kV; voltage protection level UP: 1250V (L-N), 1500V (L/N-PE) |
| Max mains-side overcurrent protection | 32A gL/gG or B/C 32A |
| Fault indication | acoustic signal; dimensions 30 x 50 x 11mm; IP20 |
| Operating temperature range | -25 to +40C; terminal wires 1mm2, 120mm long |
Product details
Not every point of use has a distribution board nearby. At 30 x 50 x 11mm the DEHNflex DFL M 255 fits behind a socket outlet, inside a flush-type box, a cable duct or a length of trunking, giving terminal equipment Type 3 protection exactly where it is needed - and telling you audibly when the protection has gone.
Key features
- Fits flush boxes, cable ducts and trunking - no DIN rail or spare board way required
- Acoustic fault indication sounds when the arrester reaches end of life
- Voltage protection level of 1250V L-N and 1500V L/N-PE for close equipment protection
- Pre-fitted 1mm2 tails, 120mm long, for straightforward connection in a back box
- Only 11mm deep, so it sits behind an accessory without fouling the fixing screws
Typical applications
Use it where the equipment matters but the board is a long way off: socket outlets feeding IT and AV equipment, workstation and desk power modules, dental and medical surgeries, tills and self-service terminals, door entry and alarm panels, and instrumentation spurs in cable containment. The audible alarm suits occupied areas where somebody will hear it, rather than a locked plant room.
Compliance
Tested as a Type 3 device to EN 61643-11 and Class III to IEC 61643-1/-11, with a UL 94 V-2 thermoplastic enclosure and IP20 protection for installation inside an accessory or containment system. 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.
