Mersen 83230122 STPT23-20K320V-3P Type 2+3 surge protection device with 20 kA discharge capacity, 320 V AC continuous operating voltage and 3+0 TNC three-phase configuration.
£89.02
The Mersen 83230122 is a robust Type 2+3 Surge Protection Device (SPD) designed to protect low voltage electrical installations against transient overvoltages. Part of the Mersen Surge-Trap® Pluggable STPT23 Series, this SPD is suitable for commercial, industrial and automation systems requiring dependable surge protection.
This pluggable surge protection device is designed for three-phase power systems and provides effective protection against voltage spikes caused by lightning activity, switching operations and electrical disturbances. Its modular construction allows fast replacement, helping reduce maintenance time and improve installation reliability.
With a maximum discharge current of 20 kA (8/20 μs), a 320 V AC continuous operating voltage (Uc) and a 3+0 TNC configuration, the Mersen 83230122 is ideal for distribution boards, control panels and industrial equipment protection.
Surge protection devices help divert damaging voltage spikes away from connected electrical equipment before they can cause faults, downtime or premature component failure. They are a vital part of protecting modern electrical installations with sensitive automation and control equipment.
The Mersen STPT23 range is designed for use as a final stage of protection close to the equipment being protected, making it well suited for industrial panels, building services and machinery control systems.
| Voltage | 480 V |
|---|---|
| Phase | Three Phase |
| Manufacturer | Mersen |
| Series | Surge-Trap® Pluggable STPT23 Series |
| Model | STPT23-20K320V-3P |
| SKU | 83230122 |
| Product type | Surge Protection Device (SPD) |
| SPD classification | Type 2+3 / Class II+III |
| Maximum discharge current (Imax) | 20 kA (8/20 μs) |
| Continuous operating voltage (Uc) | 320 V AC |
| Nominal operating voltage | 277/480 V AC |
| System configuration | 3+0 TNC |
| Number of poles | 3 |
| Number of modules | 3 |
| Format | Pluggable modular device |
| Standard | EN/IEC 61643-11 |
| RoHS compliant | Yes |
| EAN/UPC | 8435297850908 |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
It is used to protect low voltage electrical installations and connected equipment from transient overvoltages caused by lightning activity and switching events.
The Mersen 83230122 is a Type 2+3 / Class II+III surge protection device.
This device has a maximum discharge current of 20 kA (8/20 μs).
It is designed for 3+0 TNC three-phase systems.
Yes. The device has a pluggable modular format, allowing fast replacement during maintenance.
Mersen Surge-Trap® surge protection devices are trusted by electrical engineers, panel builders and maintenance teams to protect critical electrical infrastructure from damaging transient overvoltages.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
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...
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...