Mersen Surge-Trap STPT12-12K275V-4PM Type 1+2 Surge Protection Device, 4 Pole TN-S
- Brand:
- Mersen
- Part number:
- 83120145
- EAN:
- 8435297849179
Four-pole pluggable combined Type 1+2 surge arrester for three-phase TN-S systems, with 12.5kA lightning impulse rating per pole and remote end-of-life signalling.
- Combined Type 1+2 protection
- Three-phase TN-S, 4 pole
- Iimp 12.5kA, Imax 50kA, Up 1.3kV
- Remote end-of-life contact
- Plug-in coded cartridges
7 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.
Project quantities or a lead time to check? Request a quote
Specifications
Electrical
| Supply | Three phase |
|---|---|
| Earthing system | TN-S, TN-C-S (PME) |
| Earthing system (as supplied) | TN |
| Remote signalling contact | Yes |
| Application | Mains AC |
Protection
| SPD type | Type 1+2 |
|---|---|
| Lightning impulse current (Iimp per pole) | 12.5 kA |
| Max discharge current (Imax) | 50 kA |
| Voltage protection level (Up) | 1.3 kV |
Dimensions
| DIN rail width | 4 modules |
|---|
Construction
| Replaceable protection module | Yes |
|---|
Fit
| Mounting | DIN rail |
|---|
Identification
| Brand | Mersen |
|---|---|
| Part number | 83120145 |
| EAN | 8435297849179 |
| Range | Mersen Surge-Trap STPT12 |
More technical data
| Manufacturer | Mersen (Surge-Trap STPT12, catalogue STPT12-12K275V-4PM) |
|---|---|
| SPD class | Type 1+2 / Class I+II to IEC 61643-11 and EN 61643-11 |
| System | TN-S, three phase plus neutral; Un 230/400 VAC; Uc 275V |
| Lightning impulse current Iimp (10/350) | 12.5kA |
| Max discharge current Imax (8/20) | 50kA; nominal discharge current In: 20kA |
| Voltage protection level Up at In | 1.3kV |
| Remote contact | yes; cartridge SP12-12K275V |
- Back-up fuse 200A gG, Icc 25kA, IP20, PA66 V-0 body, -40 to +80C
Product details
For a 230/400V TN-S intake, this four-pole Surge-Trap STPT12 provides combined Type 1 and Type 2 protection on all three phases and the neutral, using the same 275V cartridge throughout. Iimp is 12.5kA per pole and the protection level is held to 1.3kV.
Key features
- Combined Type 1+2 / Class I+II protection for three-phase TN-S installations
- Four poles, all using the SP12-12K275V cartridge for 230/400V systems
- Iimp of 12.5kA and Imax of 50kA per pole at a 1.3kV protection level
- Mechanically coded plug-in cartridges avoid replacement errors on site
- Visual and remote end-of-life indicators, with reversible cable entry
Typical applications
Specify it at incoming supply panels in manufacturing plants, warehouses and distribution centres, data centres and telecoms facilities, water treatment works and smart grid metering positions - particularly on buildings with an external lightning protection system or an exposed overhead supply.
Compliance
Tested to IEC 61643-11 and EN 61643-11 as a Type 1+2 / Class I+II device, with a PA66 CT1 V-0 body and IP20 protection. BS 7671 requires the risk from transient overvoltages to be assessed, with Type 1 protection at the origin where partial lightning current may enter the installation.
Order today for fast UK dispatch on genuine Mersen surge protection at trade-direct prices.
