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Mersen Surge Protector Type 2 SPD 1 Pole 277 Volt 20KA L-N Remote Indication
Mersen STPT2-40K320V-1PM Type 2 surge protection device with 40 kA maximum discharge current, 320 V AC Uc, 277 V L-N configuration, remote indication and pluggable DIN rail mounting.
This product has been discontinued
A direct replacement is available below.
Replacement product
K2-1P320-M Mersen Surge Protector Type 2 SPD 1 Pole 277 Volt 20KA L-N Remote Indication
SKU: 44020107
£34.12 ex VAT
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Why Choose the Mersen 83020109 Surge Protection Device?
The Mersen 83020109 is a reliable 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 strikes. Part of the Mersen Surge-Trap® Pluggable STPT2 Series, it provides dependable protection for commercial, industrial and automation applications.
Designed for 277 V AC single phase L-N systems, the STPT2-40K320V-1PM delivers a 40 kA maximum discharge current (Imax) and 20 kA nominal discharge current (In). This model also includes remote indication, allowing the operational status of the SPD to be monitored from a control system or panel signal circuit.
With a 320 V AC maximum continuous operating voltage (Uc), compact 1 pole, 1 module pluggable format and DIN rail mounting, the Mersen 83020109 is ideal for protecting distribution boards, control panels, automation equipment and sensitive electrical systems.
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).
- Integrated remote indication for monitoring SPD status.
- Pluggable module for fast replacement and reduced maintenance time.
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.
- Remote indication contact.
- 1 pole, 1 module DIN rail mounted design.
Reliable Protection Against Electrical Surges
Type 2 surge protection devices help divert transient overvoltages away from connected equipment, reducing the risk of component damage, unexpected downtime and electrical system failures. They are commonly installed in distribution systems where dependable downstream protection is required.
The Mersen Surge-Trap® STPT2 Series combines high surge handling capability with a compact DIN rail format, replaceable pluggable cartridge and optional monitoring features, making it a practical solution for industrial, commercial and automation environments.
Typical Applications
- Industrial control panels.
- Commercial electrical distribution boards.
- PLC and automation systems.
- Building electrical services.
- OEM machinery.
- Low voltage power distribution equipment.
Technical Specifications
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| Voltage | 277 V | |
|---|---|---|
| Phase | Single Phase | |
| Poles | 1-pole | |
| Device Type | Surge protection device | |
| SPD Type | Type 2 | |
| Earthing System | TN-C, 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-1PM | |
| SKU | 83020109 | |
| 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, TN-C, TT | |
| Number of poles | 1 Pole | |
| Module width | 1 Module | |
| Assembly format | Pluggable | |
| Mounting type | DIN rail | |
| Remote indication | Yes | |
| Protection rating | IP20 | |
| Voltage protection level (Up) | ≤ 1.5 kV | |
| Standards | EN/IEC 61643-11, UL 1449 | |
| Replacement cartridge | SP2-40K320V | |
| HS Code | 85363090 | |
| Country of Manufacture | Spain |
Frequently Asked Questions
What is the Mersen 83020109 used for?
It is used to protect low voltage electrical systems from transient overvoltages caused by switching operations, grid disturbances and indirect lightning strikes.
What type of surge protection device is it?
The Mersen 83020109 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 single phase L-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 status of the surge protection device to be monitored remotely.
Can the protection cartridge be replaced?
Yes. The pluggable cartridge design allows quick replacement when required without replacing 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 protect critical electrical infrastructure against damaging transient overvoltages.
