Mersen Surge-Trap STMT23-20K275V-SP-SM Type 2+3 Surge Protection Device, Slim TT/TN-S
- Brand:
- Mersen
- Part number:
- 83230511
- EAN:
- 8435297852353
Slim single-module combined Type 2+3 surge arrester for TT and TN-S installations at single phase, with a fine 1.4kV protection level and an alarm contact.
- Combined Type 2+3 protection
- Slim single-module format
- Imax 20kA, In 10kA, Up 1.4kV
- Uoc 10kV combined pulse
- Alarm contact for remote signalling
18 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 | Yes |
| Application | Mains AC |
Protection
| SPD type | Type 2+3 |
|---|---|
| Nominal discharge current (In) | 10 kA |
| Max discharge current (Imax) | 20 kA |
| Voltage protection level (Up) | 1.4 kV |
Dimensions
| DIN rail width | 1 module |
|---|
Construction
| Replaceable protection module | No |
|---|
Fit
| Mounting | DIN rail |
|---|
Identification
| Brand | Mersen |
|---|---|
| Part number | 83230511 |
| EAN | 8435297852353 |
| Range | Mersen Surge-Trap T2+3 |
More technical data
| Manufacturer | Mersen (Surge-Trap STMT23, catalogue STMT23-20K275V-SP-SM) |
|---|---|
| SPD class | Type 2+3 / Class II+III to IEC 61643-11 and EN 61643-11 |
| System | single-phase TT and TN-S (1Ph+N), 2 pole, parallel connection |
| Nominal voltage Un | 230V; Uc 275 VAC / 365 VDC |
| Max discharge current Imax (8/20) | 20kA; nominal discharge current In: 10kA |
| Combined voltage pulse Uoc | 10kV; Up at In: 1.4kV (L1-L2 and L1/L2-PE) |
- Response time 25ns; back-up fuse 25 to 63A gG; PC+GF V-0 body
- Remote alarm contact fitted (normally closed as supplied)
Product details
Combining Type 2 and Type 3 duty in one slim device, the Surge-Trap STMT23 gives a very fine protection level of 1.4kV in a body narrow enough for a crowded board. It is the final stage of protection, and it belongs right beside the equipment it is there to keep alive.
Key features
- Combined Type 2+3 / Class II+III protection in a slim single-module body
- Fine protection level of 1.4kV line-line and line-earth
- Imax of 20kA, In of 10kA and a combined voltage pulse Uoc of 10kV
- Alarm contact for remote end-of-life signalling, supplied normally closed
- Monobloc construction with visual LED end-of-life and power status indication
Typical applications
Fit it as close to the protected equipment as practical, downstream of a Type 2 device: control and automation panels, IT and comms cabinets, LED outdoor lighting control gear, water treatment instrumentation, telecom equipment and small machine panels. The slim format suits boards where a two-module arrester simply will not fit.
Compliance
Tested to IEC 61643-11 and EN 61643-11 as a Type 2+3 / Class II+III device, with a PC+GF V-0 body. It is intended as the final stage in a coordinated scheme with Type 2 protection installed upstream. BS 7671 requires transient overvoltage risk to be assessed and coordinated protection provided where the consequences justify it.
Order today for fast UK dispatch on genuine Mersen surge protection at trade-direct prices.
