Mersen 83010104 Surge-Trap Monobloc STMT1 Type 1 surge protection device, catalogue number STMT1-50K320V-1P, rated at 50 kA Iimp with 277 V nominal voltage and 320 V maximum continuous operating voltage.
Original price was: £219.25.£162.03Current price is: £162.03.
The Mersen 83010104 is a high-performance Type 1 surge protection device (SPD) designed to protect low-voltage electrical installations against transient overvoltages caused by lightning strikes and switching surges. Part of the Mersen Surge-Trap Monobloc STMT1 Series, it provides robust first-stage surge protection for incoming power supplies in industrial, commercial and infrastructure applications.
Built in a compact monobloc DIN rail mounted format, the 83010104 is suitable for installation inside distribution boards, switchgear assemblies and control panels. Its 1-pole L-N configuration is designed for single-phase protection where dependable surge diversion is required at the electrical supply entry point.
With a 50 kA lightning impulse current rating, a 277 V nominal operating voltage and a 320 V maximum continuous operating voltage, the Mersen 83010104 is ideal for installations requiring strong protection against high-energy surge events.
Surge protection devices such as the Mersen 83010104 help protect electrical systems by diverting transient overvoltages away from connected equipment. This helps reduce the risk of damage to control electronics, automation systems, power supplies and other sensitive electrical components.
As a Type 1 surge arrester, the 83010104 is particularly suited to installations exposed to direct or indirect lightning effects, including sites with external lightning protection systems, overhead supply lines or incoming distribution boards requiring first-stage surge protection.
| Voltage | 277 V |
|---|---|
| Phase | Single Phase |
| Manufacturer | Mersen |
| Series | Surge-Trap Monobloc STMT1 Series |
| Model | 83010104 |
| Catalogue number | STMT1-50K320V-1P |
| Product type | Surge protection device |
| SPD classification | Type 1 / Class I |
| Configuration | L-N |
| Number of poles | 1 pole |
| Nominal operating voltage | 277 V AC |
| Maximum continuous operating voltage | 320 V AC |
| Lightning impulse current | 50 kA Iimp (10/350 μs) |
| Format | Monobloc |
| Module width | 2 modules |
| Protection rating | IP20 |
| Mounting type | DIN rail mounting |
| EAN / UPC | 8435297852339 |
| RoHS compliant | Yes |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
The Mersen 83010104 is used to protect low-voltage electrical installations against transient overvoltages caused by lightning strikes and switching surges.
The 83010104 is a Type 1 / Class I surge protection device, designed for first-stage protection at the incoming electrical supply.
The Mersen 83010104 has a 50 kA Iimp lightning impulse current rating using a 10/350 μs waveform.
The device is designed for 277 V AC systems with a maximum continuous operating voltage of 320 V AC.
The Mersen 83010104 is typically installed on a DIN rail inside the main distribution board, switchboard or incoming electrical panel.
Mersen Surge-Trap protection devices are trusted by electrical engineers, panel builders and contractors 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...