Mersen 83230511 STMT23-20K275V-SP-SM Type 2+3 surge protection device with 20 kA Imax, 230 V nominal operating voltage, 275 V maximum continuous operating voltage, 2 pole slim monobloc construction and remote indication.
£78.57
The Mersen 83230511 is a compact and reliable Type 2+3 surge protection device (SPD) designed to protect sensitive electrical and electronic equipment against transient overvoltages. Part of the Mersen Surge-Trap Monobloc STMT23 series, this slim DIN rail mounted SPD is suitable for low voltage power systems in industrial, commercial and control panel applications.
This surge protection device provides dependable protection against switching surges and indirect lightning effects. Its monobloc construction, one-module width and remote indication capability make it well suited for distribution boards, machinery panels and enclosures where both space saving and condition monitoring are important.
With a 20 kA maximum discharge current, 230 V nominal operating voltage and 275 V maximum continuous operating voltage, the 83230511 is designed for 1Ph+N TT and TN-S systems. It offers effective protection for power supplies, control equipment, communication systems and other sensitive electronic loads.
Surge protection devices help limit transient overvoltages before they reach connected equipment. This helps reduce the risk of damage to electrical installations, automation hardware, power supplies and communication systems while improving long-term reliability.
The Mersen STMT23 range is engineered for applications where compact dimensions, reliable protection and straightforward installation are important. Its slim DIN rail format makes the 83230511 particularly useful in control panels, distribution boards and commercial electrical systems.
| Voltage | 230 V |
|---|---|
| Phase | Single Phase |
| Manufacturer | Mersen |
| Series | Surge-Trap Monobloc STMT23 |
| Model | STMT23-20K275V-SP-SM |
| Item number | 83230511 |
| Product type | Surge protection device |
| SPD type | Type 2+3 / Class II + III |
| Maximum discharge current | 20 kA Imax (8/20 µs) |
| Nominal discharge current | 10 kA |
| Nominal operating voltage | 230 V |
| Maximum continuous operating voltage | 275 V |
| Protection modes | L-N / L-PE |
| System configuration | TT / TN-S |
| Number of poles | 2 poles |
| Format | Slim monobloc, 1 module |
| Mounting type | DIN rail mounting |
| Remote indication | Yes |
| Standards | IEC 61643-11 / EN 61643-11 |
| EAN / UPC | 8435297849551 |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
The Mersen 83230511 is used to protect sensitive electrical and electronic equipment from transient overvoltages in low voltage power systems.
It is a Type 2+3 / Class II + III surge protection device from the Mersen Surge-Trap Monobloc STMT23 series.
The device has a 20 kA maximum discharge current Imax and a nominal discharge current of approximately 10 kA.
The 83230511 has a 230 V nominal operating voltage and a 275 V maximum continuous operating voltage.
Yes, the Mersen 83230511 includes remote indication, allowing its status to be monitored as part of a maintenance or control system.
Mersen Surge-Trap surge protection devices are trusted by panel builders, OEMs and electrical engineers to protect critical equipment, reduce downtime and improve installation reliability.
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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...
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...