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Mersen Surge Protector Type 2 SPD 4 Pole 277/480 Volt 20KA TNS
Mersen 83020154 STPT2-40K320V-4P Type 2 surge protection device with 40 kA maximum discharge current, 20 kA nominal discharge current, 320 V AC Uc, 277/480 V AC operation, 4+0 TNS configuration and four-pole pluggable DIN rail construction.
This product has been discontinued
A direct replacement is available below.
Replacement product
K2-4P320 Mersen Surge Protector Type 2 SPD 4 Pole 277/480 Volt 20KA TNS
SKU: 44020412
£109.85 ex VAT
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Why Choose the Mersen 83020154 Surge Protection Device?
The Mersen 83020154 STPT2-40K320V-4P is a dependable Type 2 surge protection device (SPD) designed to protect low-voltage electrical installations from transient overvoltages caused by switching operations and indirect lightning activity. As part of the Mersen Surge-Trap® Pluggable STPT2 Series, it provides reliable protection for commercial, industrial and infrastructure power distribution systems.
This pluggable surge protection device is designed for straightforward installation, fast cartridge replacement and long-term protection of sensitive electrical equipment. Its modular construction helps reduce maintenance time, while visual status indication makes it easy to identify when protection modules require replacement.
With a 40 kA maximum discharge current, 320 V AC maximum continuous operating voltage and 4+0 TNS configuration, the Mersen 83020154 is suitable for 277/480 V AC three-phase plus neutral systems. Its four-pole, four-module DIN rail format makes it ideal for distribution boards and industrial control panels.
Key Advantages
- Reliable Type 2 surge protection device for low-voltage electrical installations.
- 40 kA maximum discharge current for effective transient overvoltage protection.
- Designed for 277/480 V AC three-phase plus neutral systems.
- 4+0 TNS configuration suitable for TNS earthing arrangements.
- Pluggable cartridge design allows quick replacement during maintenance.
- Compact DIN rail mounting for distribution boards and control panels.
Key Features
- Mersen Surge-Trap® Pluggable STPT2 Series.
- Type 2 / Class II surge protection.
- 40 kA Imax (8/20 μs) maximum discharge current.
- 20 kA In (8/20 μs) nominal discharge current.
- 277/480 V AC nominal operating voltage.
- 320 V AC Uc maximum continuous operating voltage.
- 3Ph+N electrical system configuration.
- 4+0 TNS protection arrangement.
- Four-pole, four-module pluggable construction.
- Visual indication for protection status monitoring.
Reliable Surge Protection for Electrical Distribution
Type 2 surge protection devices are installed in distribution boards and control panels to limit transient overvoltages before they reach sensitive connected equipment. They help protect automation controls, power supplies, drives, monitoring devices and building electrical systems from damaging voltage spikes.
The Mersen STPT2-40K320V-4P combines strong surge discharge performance with a practical pluggable construction, making it a dependable choice for electrical contractors, panel builders and maintenance engineers working on commercial and industrial power distribution systems.
Typical Applications
- Three-phase electrical distribution boards.
- Commercial building power systems.
- Industrial control panels.
- Manufacturing and automation equipment.
- Building services and infrastructure installations.
- Panel building and electrical protection upgrades.
Technical Specifications
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| Voltage | 480 V | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 4-pole | |
| Device Type | Surge protection device | |
| SPD Type | Type 2 | |
| Earthing System | TN-S | |
| Nominal Discharge Current (In) | 20 kA | |
| Remote Signal | No | |
| Manufacturer | Mersen | |
| Series | Surge-Trap® Pluggable STPT2 Series - 40kA | |
| Model | STPT2-40K320V-4P | |
| Part number | 83020154 | |
| EAN / UPC | 8435297851240 | |
| Product type | Type 2 surge protection device | |
| SPD Type | Type 2 / Class II | |
| Maximum discharge current (Imax) | 40 kA | |
| Nominal Discharge Current (In) | 20 kA | |
| Waveform | 8/20 μs | |
| Nominal operating voltage | 277 / 480 V AC | |
| Maximum continuous operating voltage (Uc) | 320 V AC | |
| Electrical system | 3-phase + neutral | |
| Configuration | TN-S | |
| Number of poles | 4 | |
| Module width | 4 modules | |
| Format | Pluggable | |
| Mounting type | DIN rail | |
| Remote indication | No | |
| Protection rating | IP20 | |
| Replacement plug L-N | SP2-40K320V | |
| Standards | IEC 61643-11, EN 61643-11, UL 1449 4th Edition | |
| HS Code | 85363090 | |
| Country of Manufacture | Spain |
Frequently Asked Questions
What is the Mersen 83020154 used for?
The Mersen 83020154 is used to protect low-voltage electrical installations from transient overvoltages caused by switching events and indirect lightning activity.
What type of surge protection device is it?
It is a Type 2 / Class II surge protection device designed for installation in electrical distribution boards and control panels.
What is the maximum discharge current?
The device has a maximum discharge current of 40 kA with an 8/20 μs surge waveform.
What electrical system is this SPD suitable for?
The Mersen 83020154 is suitable for 277/480 V AC three-phase plus neutral TNS systems using a 4+0 configuration.
Is the Mersen 83020154 pluggable?
Yes. The STPT2-40K320V-4P has a pluggable four-module design, allowing protection cartridges to be replaced quickly during maintenance.
Trusted for Electrical Protection Worldwide
Mersen Surge-Trap® surge protection devices are trusted by electrical contractors, panel builders and industrial engineers to help protect critical power distribution systems from damaging transient overvoltages.
