Mersen 83230403 STET23-20K275V-SPM Type 2+3 surge protection device with integrated EMI filter, 20 kA Imax, 230 V nominal operating voltage, 275 V maximum continuous operating voltage and remote indication.
£145.21
The Mersen 83230403 is a high performance Type 2+3 surge protection device (SPD) with an integrated EMI filter, designed to protect sensitive electrical and electronic equipment from transient overvoltages and electromagnetic interference. Part of the Mersen Surge-Trap Monobloc STET23 series, this DIN rail mounted SPD is ideal for industrial automation, commercial installations and critical control systems.
Combining surge suppression with electromagnetic interference filtering, the STET23 series provides enhanced protection for applications where electrical noise and voltage disturbances can affect system performance. Its monobloc construction simplifies installation while delivering dependable protection in demanding environments.
With a 20 kA maximum discharge current, 230 V nominal operating voltage, 275 V maximum continuous operating voltage and integrated remote indication, the 83230403 is suitable for single-phase TT and TN-S systems. It is designed as the final stage of protection for installations requiring reliable surge suppression and EMI filtering.
The Mersen STET23 series combines transient overvoltage protection with electromagnetic interference filtering to help maintain stable operation of sensitive electrical and electronic equipment. This dual-function design helps minimise downtime while protecting automation systems, communication equipment and industrial controls.
Designed for use as the final stage of surge protection, the STET23 range is particularly suited to installations where both surge suppression and reduced electrical noise are essential for reliable system performance.
| Voltage | 230 V |
|---|---|
| Phase | Single Phase |
| Manufacturer | Mersen |
| Series | Surge-Trap Monobloc STET23 |
| Model | STET23-20K275V-SPM |
| Item number | 83230403 |
| Product type | Surge protection device with EMI filter |
| 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 AC |
| Maximum continuous operating voltage | 275 V AC |
| Protection modes | L-N / N-PE |
| System configuration | TT / TN-S |
| Number of poles | 2 poles |
| Format | Monobloc, 4 modules |
| Mounting type | DIN rail mounting |
| Maximum back-up fuse | 20 A gG |
| Remote indication | Yes |
| Integrated EMI filter | Yes |
| EAN / UPC | 8435297849292 |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
The Mersen 83230403 protects electrical equipment from transient overvoltages while also reducing electromagnetic interference through its integrated EMI filter.
It is a Type 2+3 / Class II + III surge protection device with an integrated EMI filter.
The device provides a 20 kA maximum discharge current (Imax) with a nominal discharge current of 10 kA.
The 83230403 is designed for 230 V AC systems with a maximum continuous operating voltage of 275 V AC.
Yes. The Mersen 83230403 incorporates remote indication to support system monitoring and preventative maintenance.
Mersen Surge-Trap surge protection devices are trusted by OEMs, panel builders and electrical engineers to protect critical systems from damaging transient overvoltages while improving electrical 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...