Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
Mersen Surge Protector Type 2 SPD 2 Pole 277 Volt 20KA TT Remote Indication
Mersen STPT2-40K320V-2PGM Type 2 surge protection device with 40 kA maximum discharge current, 320 V AC Uc, 277 V AC 1Ph+N 1+1 TT configuration, remote indication and pluggable DIN rail mounting.
This product has been discontinued
A direct replacement is available below.
Replacement product
K2-2PG320-M Mersen Surge Protector Type 2 SPD 2 Pole 277 Volt 20KA TT Remote Indication
SKU: 44020209
£69.15 ex VAT
View
Why Choose the Mersen 83020119 Surge Protection Device?
The Mersen 83020119 is a high performance Type 2 surge protection device (SPD) designed to protect low voltage electrical installations from transient overvoltages caused by switching operations, grid disturbances and indirect lightning effects. Part of the Mersen Surge-Trap® Pluggable STPT2 Series, it provides dependable protection for commercial, industrial and automation environments.
The STPT2-40K320V-2PGM is designed for 277 V AC 1Ph+N TT systems and delivers a 40 kA maximum discharge current (Imax) together with a 20 kA nominal discharge current (In). Its 1+1 TT configuration protects both line-to-neutral and neutral-to-earth paths, while the integrated remote indication contact enables monitoring of SPD status from a control panel or alarm circuit.
With a 320 V AC maximum continuous operating voltage (Uc), compact 2 pole, 2 module pluggable construction and DIN rail mounting, the Mersen 83020119 is ideal for protecting distribution boards, switchgear, control panels and sensitive electrical equipment in demanding low voltage installations.
Key Advantages
- Compact Type 2 surge protection device for low voltage installations.
- 40 kA maximum discharge current (Imax).
- 20 kA nominal discharge current (In).
- 320 V AC maximum continuous operating voltage (Uc).
- 1+1 TT configuration for 277 V AC single phase systems.
- Integrated remote indication for continuous status monitoring.
Key Features
- Mersen Surge-Trap® Pluggable STPT2 Series.
- Type 2 / Class II surge protection.
- 40 kA Imax (8/20 μs).
- 20 kA In (8/20 μs).
- 277 V AC nominal operating voltage.
- 320 V AC Uc.
- 1Ph+N, 1+1 TT configuration.
- Remote indication with pluggable DIN rail mounted design.
Reliable Protection Against Electrical Surges
Type 2 surge protection devices help divert transient overvoltages away from connected electrical equipment, reducing the risk of component damage, nuisance failures and costly downtime. They are commonly installed in distribution boards as part of a coordinated low voltage surge protection strategy.
The Mersen Surge-Trap® STPT2 Series combines high surge current capability with replaceable pluggable cartridges and integrated remote monitoring, making it a practical solution for distribution panels, industrial control systems and commercial installations.
Typical Applications
- Single phase 277 V TT electrical systems.
- Commercial distribution boards.
- Industrial control panels.
- PLC and automation systems.
- Building electrical services.
- Low voltage power distribution equipment.
Technical Specifications
Tick the specs you need, then view products that match.
| Voltage | 277 V | |
|---|---|---|
| Phase | Single Phase | |
| Poles | 2-pole | |
| Device Type | Surge protection device | |
| SPD Type | Type 2 | |
| Earthing System | TN-S, TT | |
| Nominal Discharge Current (In) | 20 kA | |
| Remote Signal | Yes | |
| Manufacturer | Mersen | |
| Series | Surge-Trap® Pluggable STPT2 Series - 40 kA | |
| Model | STPT2-40K320V-2PGM | |
| SKU | 83020119 | |
| Product type | Type 2 Surge Protection Device | |
| SPD class | Type 2 / Class II | |
| Nominal operating voltage | 277 V AC | |
| Maximum continuous operating voltage (Uc) | 320 V AC | |
| Maximum discharge current (Imax) | 40 kA | |
| Nominal Discharge Current (In) | 20 kA | |
| Configuration | TN-S, TT | |
| Number of poles | 2 Poles | |
| Module width | 2 Modules | |
| Assembly format | Pluggable | |
| Mounting type | DIN rail | |
| Remote indication | Yes | |
| Protection rating | IP20 | |
| Short circuit withstand (ISCCR) | 25 kA | |
| Voltage protection level | ≤ 1.5 kV L-N, ≤ 1.5 kV N-PE | |
| Standards | EN/IEC 61643-11, UL 1449 | |
| Replacement cartridges | SP2-40K320V, SP2-40K-N | |
| HS Code | 85363090 | |
| Country of Manufacture | Spain |
Frequently Asked Questions
What is the Mersen 83020119 used for?
It protects single phase low voltage TT electrical installations against transient overvoltages caused by switching operations, grid disturbances and indirect lightning effects.
What type of surge protection device is it?
The Mersen 83020119 is a Type 2 / Class II surge protection device with a pluggable module and remote indication.
What voltage is this SPD designed for?
It is designed for 277 V AC 1Ph+N systems with a 320 V AC maximum continuous operating voltage.
Does this model include remote indication?
Yes. The integrated remote indication contact allows the operational status of the surge protection device to be monitored remotely.
Can the protection cartridges be replaced?
Yes. The pluggable cartridge design enables rapid replacement without removing the complete surge protection assembly.
Trusted by Electrical Professionals Worldwide
Mersen Surge-Trap® surge protection devices are trusted by electrical engineers, panel builders and maintenance professionals to provide dependable protection for critical low voltage electrical systems.
