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Mersen Surge Protector Type 2 SPD 4 Pole 230/400 Volt 20KA TT Remote Indication
Mersen 83020147 STPT2-40K275V-4PGM Type 2 surge protection device with 40 kA maximum discharge current, 275 V AC Uc, 230/400 V AC operation, 3+1 TT configuration, four-pole pluggable construction and remote indication.
This product has been discontinued
A direct replacement is available below.
Replacement product
K2-4PG275-M Mersen Surge Protector Type 2 SPD 4 Pole 230/400 Volt 20KA TT Remote Indication
SKU: 44020401
£122.96 ex VAT
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Why Choose the Mersen 83020147 Surge Protection Device?
The Mersen 83020147 STPT2-40K275V-4PGM is a robust 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 dependable surge protection for commercial, industrial and infrastructure power distribution systems.
This pluggable SPD is engineered for easy installation, fast cartridge replacement and reliable long-term operation. Its modular construction helps reduce maintenance time, while visual status indication and remote indication support make it suitable for monitored electrical systems where equipment protection and uptime are critical.
With a 40 kA maximum discharge current, 275 V AC maximum continuous operating voltage and 3+1 TT configuration, the Mersen 83020147 is ideal for three-phase plus neutral electrical installations. Its four-pole, four-module format is designed for DIN rail mounting inside distribution boards and control panels.
Key Advantages
- Reliable Type 2 surge protection device for low-voltage electrical systems.
- 40 kA maximum discharge current for effective transient overvoltage protection.
- Designed for three-phase plus neutral 230/400 V AC systems.
- 3+1 TT configuration suitable for TT earthing arrangements.
- Pluggable cartridge design supports quick replacement and reduced downtime.
- Includes remote indication capability for monitored installations.
Key Features
- Mersen Surge-Trap® Pluggable STPT2 Series.
- Type 2 / Class II surge protection.
- 40 kA Imax (8/20 μs) maximum discharge current.
- 275 V AC Uc maximum continuous operating voltage.
- 230/400 V AC nominal system voltage.
- 3Ph+N electrical system configuration.
- 3+1 TT protection arrangement.
- Four-pole, four-module pluggable construction.
- DIN rail mounting for distribution boards and panels.
- Visual and remote indication for end-of-life monitoring.
Reliable Surge Protection for Power Distribution
Type 2 surge protection devices are used within distribution boards and control panels to limit transient overvoltages before they reach sensitive electrical equipment. They help protect automation systems, power supplies, drives, controls and connected devices from damage caused by voltage spikes.
The Mersen STPT2-40K275V-4PGM combines high surge discharge capacity with practical maintenance features, making it a dependable choice for electrical contractors, panel builders and maintenance engineers working on commercial and industrial installations.
Typical Applications
- Three-phase electrical distribution boards.
- Commercial building power systems.
- Industrial control panels.
- Manufacturing and automation equipment.
- Infrastructure and utility installations.
- Panel building and electrical protection upgrades.
Technical Specifications
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| Voltage | 400 V | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 4-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 - 40kA | |
| Model | STPT2-40K275V-4PGM | |
| Part number | 83020147 | |
| Product type | Type 2 surge protection device | |
| SPD Type | Type 2 / Class II | |
| Maximum discharge current (Imax) | 40 kA | |
| Waveform | 8/20 μs | |
| Nominal system voltage | 230 / 400 V AC | |
| Maximum continuous operating voltage (Uc) | 275 V AC | |
| Electrical system | 3-phase + neutral | |
| Configuration | TN-S, TT | |
| Number of poles | 4 | |
| Module width | 4 modules | |
| Format | Pluggable | |
| Mounting type | DIN rail | |
| Remote indication | Yes | |
| Protection rating | IP20 | |
| Operating temperature | -40°C to +80°C | |
| Dimensions (H × W × D) | approx. 90 × 72 × 70 mm | |
| 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 83020147 used for?
The Mersen 83020147 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 83020147 is suitable for 230/400 V AC three-phase plus neutral TT systems using a 3+1 configuration.
Does this surge protection device include remote indication?
Yes. The STPT2-40K275V-4PGM includes remote indication capability for monitoring the end-of-life status of the surge protection device.
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 against damaging transient overvoltages.
