Mersen 83230505 STMT23-6K30V-SP-SM Type 2+3 surge protection device, 6 kA Imax, 24 V nominal operating voltage, 30 V continuous operating voltage, 2 pole slim monobloc SPD with remote indication.
£82.51
The Mersen 83230505 is a compact and reliable Type 2+3 surge protection device designed to protect sensitive electrical and electronic equipment from transient overvoltages. Part of the Mersen Surge-Trap Monobloc STMT23 series, this slim DIN rail mounted SPD is suitable for low voltage power lines in industrial, commercial and control system applications.
This surge protection device provides fine protection for equipment exposed to switching surges and indirect lightning effects. Its monobloc construction, slim one-module format and integrated status indication make it well suited for control panels, automation cabinets and installations where panel space is limited.
With a 6 kA maximum discharge current, 24 V nominal operating voltage and 30 V continuous operating voltage, the 83230505 is designed for 1Ph+N TT and TN-S systems. The unit includes remote indication capability, helping maintenance teams monitor SPD condition and plan replacement when required.
Surge protection devices help limit transient overvoltages before they can damage connected equipment. In automation panels and low voltage control systems, this helps reduce downtime, protect sensitive electronics and improve long-term installation reliability.
The Mersen STMT23 series is designed for applications where compact dimensions, dependable surge performance and easy condition monitoring are important. Its slim DIN rail format makes the 83230505 especially useful in crowded control panels and distribution boards.
| Phase | Single Phase |
|---|---|
| Manufacturer | Mersen |
| Series | Surge-Trap Monobloc STMT23 |
| Model | STMT23-6K30V-SP-SM |
| Item number | 83230505 |
| Product type | Surge protection device |
| SPD type | Type 2+3 / Class II + III |
| Maximum discharge current | 6 kA Imax (8/20 µs) |
| Nominal discharge current | 3 kA |
| Nominal operating voltage | 24 V |
| Maximum continuous operating voltage | 30 V |
| Network type | 1Ph+N, TT / TN-S |
| Number of poles | 2 poles |
| Format | Slim monobloc, 1 module |
| Mounting type | DIN rail mounting |
| Protection rating | IP20 |
| Remote indication | Yes |
| EAN / UPC | 8435297850441 |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
The Mersen 83230505 is used to protect sensitive electrical and electronic equipment from transient overvoltages on low voltage power lines.
It is a Type 2+3 / Class II + III surge protection device from the Mersen Surge-Trap Monobloc STMT23 series.
The device has a 6 kA maximum discharge current Imax and a nominal discharge current of approximately 3 kA.
The 83230505 has a 24 V nominal operating voltage and a 30 V maximum continuous operating voltage.
Yes, the Mersen 83230505 includes remote indication, allowing its operating status to be monitored as part of a control or maintenance system.
Mersen Surge-Trap surge protection devices are used by electrical engineers, panel builders and maintenance teams to protect sensitive equipment, reduce downtime and improve installation reliability.
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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...