Mersen 83010107 Surge-Trap Monobloc STMT1 Type 1 surge protection device, catalogue number STMT1-50K440V-1P, rated at 50 kA Iimp with 400 V nominal voltage and 440 V maximum continuous operating voltage.
£219.25
The Mersen 83010107 is a robust Type 1 surge protection device (SPD) engineered to safeguard low-voltage electrical installations against transient overvoltages caused by direct lightning strikes and switching surges. As part of the Mersen Surge-Trap® Monobloc STMT1 Series, it provides dependable first-stage surge protection for industrial, commercial and infrastructure power systems.
Featuring a compact monobloc DIN rail mounted design, the 83010107 is suitable for installation within incoming distribution boards, switchgear and control panels. Its single-pole L-N configuration offers effective protection for 400 V AC systems exposed to high-energy lightning events.
With a 50 kA lightning impulse current rating, a 400 V nominal operating voltage and a 440 V maximum continuous operating voltage (Uc), the Mersen 83010107 provides reliable protection for sensitive electrical equipment in demanding industrial environments.
The Mersen 83010107 safely diverts high-energy transient overvoltages to earth before they can damage sensitive electrical and electronic equipment. Installing a Type 1 SPD at the incoming supply improves system reliability while reducing downtime caused by lightning-induced surges.
It is particularly suited to installations with external lightning protection systems, overhead supply lines or locations exposed to frequent lightning activity, providing the first level of surge protection in accordance with EN IEC 61643-11.
| Voltage | 400 V |
|---|---|
| Phase | Single Phase |
| Manufacturer | Mersen |
| Series | Surge-Trap® Monobloc STMT1 Series |
| Model | 83010107 |
| Catalogue number | STMT1-50K440V-1P |
| Product type | Surge protection device |
| SPD classification | Type 1 / Class I |
| Configuration | L-N |
| Number of poles | 1 pole |
| Nominal operating voltage (Un) | 400 V AC |
| Maximum continuous operating voltage (Uc) | 440 V AC |
| Lightning impulse current (Iimp) | 50 kA (10/350 μs) |
| Nominal discharge current (In) | 50 kA (8/20 μs) |
| Protection level (Up) | ≤ 2.5 kV |
| Short-circuit withstand rating | 50 kA |
| Protection rating | IP20 |
| Mounting type | 35 mm DIN rail |
| Module width | 2 modules |
| Back-up fuse | 500 A gG |
| Dimensions (H × W × D) | approx. 89.9 × 36.1 × 70.1 mm |
| Weight | approx. 0.253 kg |
| EAN | 8435297859338 |
| RoHS compliant | Yes |
The Mersen 83010107 protects low-voltage electrical installations against transient overvoltages caused by direct lightning strikes and switching surges.
The 83010107 is a Type 1 / Class I surge protection device designed for installation at the incoming electrical supply.
The Mersen 83010107 has a 50 kA Iimp lightning impulse current rating using a 10/350 μs waveform.
The device is designed for 400 V AC systems with a maximum continuous operating voltage of 440 V AC.
The Mersen 83010107 is normally installed on a DIN rail within the main distribution board or incoming electrical panel as the first stage of surge protection.
Mersen Surge-Trap® protection devices are trusted by electrical engineers and panel builders to provide dependable lightning and transient surge protection for industrial and commercial electrical installations.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...