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Mersen Surge Protector Type 2+3 SPD 2 Pole 230 Volt 10KA TT/TNS EMI Remote Indication
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.
£108.91
Why Choose the Mersen 83230403 Surge Protection Device?
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.
Key Advantages
- Compact Type 2+3 surge protection device with integrated EMI filter.
- 20 kA Imax discharge rating for effective transient protection.
- 230 V nominal operating voltage with 275 V maximum continuous operating voltage.
- Integrated EMI filter helps reduce electrical noise.
- Suitable for single-phase TT and TN-S systems.
- Remote indication supports preventative maintenance and monitoring.
Key Features
- Mersen Surge-Trap Monobloc STET23 series.
- Type 2+3 / Class II + III surge protection.
- Integrated EMI filter.
- 20 kA maximum discharge current Imax (8/20 µs).
- 10 kA nominal discharge current.
- 230 V nominal operating voltage.
- 275 V maximum continuous operating voltage.
- LED visual indication and remote status signalling.
Reliable Surge Protection with 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.
Typical Applications
- Industrial automation systems.
- Control panels and switchboards.
- Commercial electrical installations.
- Telecommunications and IT equipment.
- Water treatment and process control.
- LED lighting and sensitive electronic equipment.
Technical Specifications
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| Voltage | 230 V | |
|---|---|---|
| Phase | Single Phase | |
| Poles | 2-pole | |
| Device Type | Surge protection device | |
| SPD Type | Type 2+3 | |
| Nominal Discharge Current (In) | 10 kA | |
| Earthing System | TN-S, TT | |
| Remote Signal | Yes | |
| 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 |
Frequently Asked Questions
What is the Mersen 83230403 used for?
The Mersen 83230403 protects electrical equipment from transient overvoltages while also reducing electromagnetic interference through its integrated EMI filter.
What type of surge protection device is this?
It is a Type 2+3 / Class II + III surge protection device with an integrated EMI filter.
What is the discharge rating?
The device provides a 20 kA maximum discharge current (Imax) with a nominal discharge current of 10 kA.
What supply voltage is supported?
The 83230403 is designed for 230 V AC systems with a maximum continuous operating voltage of 275 V AC.
Does the device include remote indication?
Yes. The Mersen 83230403 incorporates remote indication to support system monitoring and preventative maintenance.
Trusted by Electrical Engineers Worldwide
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.
