Mersen 83230123 STPT23-20K320V-3PM Type 2+3 surge protection device with 20 kA discharge capacity, 320 V AC continuous operating voltage, 3+0 TNC configuration and remote indication.
Original price was: £104.15.£76.97Current price is: £76.97.
The Mersen 83230123 is a high performance 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 device provides reliable protection for three-phase power systems used in commercial, industrial and automation environments.
This pluggable surge protection device is engineered to help protect electrical equipment from voltage spikes caused by lightning activity, switching operations and network disturbances. Its compact modular format supports straightforward DIN rail installation, while the integrated remote indication contact enables easy monitoring of end-of-life status.
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 83230123 is well suited for distribution boards, machinery panels and industrial control systems requiring dependable surge protection.
Surge protection devices help divert harmful voltage spikes away from connected equipment before they can cause insulation damage, system faults or unplanned downtime. They are essential for protecting modern electrical installations where sensitive automation, control and power equipment is used.
The Mersen STPT23 range is designed as a compact final stage of protection for low voltage installations, making it suitable for installation close to the equipment being protected in control panels, switchboards and machinery systems.
| Voltage | 480 V |
|---|---|
| Phase | Three Phase |
| Manufacturer | Mersen |
| Series | Surge-Trap® Pluggable STPT23 Series |
| Model | STPT23-20K320V-3PM |
| SKU | 83230123 |
| Product type | Surge Protection Device (SPD) |
| SPD classification | Type 2+3 / Class II+III |
| Maximum discharge current (Imax) | 20 kA (8/20 μs) |
| Nominal discharge current (In) | 10 kA |
| 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 |
| Mounting type | DIN rail |
| Remote indication | Yes |
| Standard | EN/IEC 61643-11 |
| RoHS compliant | Yes |
| EAN/UPC | 8435297849308 |
| 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, switching events and electrical disturbances.
The Mersen 83230123 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 three-phase 3+0 TNC systems with a nominal operating voltage of 277/480 V AC.
Yes. The device includes remote indication, allowing its status to be monitored within electrical control or building management systems.
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...