Mersen STMT23-6K30V-SP-S Type 2+3 slim monobloc surge protection device with 6 kA discharge capacity, 30 V AC maximum continuous operating voltage and SP TT/TNS configuration.
£73.55
The Mersen 83230504 is a compact Type 2+3 Surge Protection Device (SPD) designed to protect low voltage AC and DC electrical installations against transient overvoltages. Part of the Mersen Surge-Trap® Monobloc STMT23 Series, this slim SPD provides reliable protection for sensitive control, communication and power supply equipment where DIN rail space is limited.
Designed for DIN rail installation, this monobloc surge protection device protects connected equipment against voltage spikes caused by lightning activity, switching operations and electrical disturbances. Its slim one-module construction makes it ideal for compact control panels, machinery cabinets and distribution boards.
With a maximum discharge current of 6 kA (8/20 μs), a 30 V AC maximum continuous operating voltage (Uc) and a 24 V AC nominal operating voltage, the Mersen 83230504 is ideal for protecting low voltage control circuits, automation equipment, communication systems and instrumentation.
Surge protection devices safely divert transient overvoltages away from connected equipment before they can cause electronic damage, insulation failure or costly downtime. Compact Type 2+3 devices provide fine protection close to sensitive electrical equipment where dependable performance is essential.
The Mersen Surge-Trap® Monobloc STMT23 Series is suitable for both AC and corresponding DC voltage applications, making it ideal for protecting control circuits, instrumentation, communication systems, power supplies and compact electrical panels.
| Phase | Single Phase |
|---|---|
| Manufacturer | Mersen |
| Series | Surge-Trap® Monobloc STMT23 Series |
| Model | STMT23-6K30V-SP-S |
| SKU | 83230504 |
| Product type | Surge Protection Device (SPD) |
| SPD classification | Type 2+3 / Class II+III |
| Maximum discharge current (Imax) | 6 kA (8/20 μs) |
| Nominal discharge current (In) | 3 kA |
| Combined voltage pulse (Uoc) | 6 kV |
| Nominal operating voltage (Un) | 24 V AC |
| Maximum continuous operating voltage (Uc L-N) | 30 V AC |
| Typical DC operating voltage | 48 V DC |
| System configuration | SP TT/TNS |
| Network type | 1 phase + neutral |
| Number of poles | 2 |
| Number of modules | 1 |
| Format | Slim monobloc |
| Mounting type | DIN rail |
| Protection modes | L-N / L-PE |
| Protection rating | IP20 |
| Short circuit withstand (ISCCR) | 10 kA |
| Maximum back-up fuse | 63 A gG |
| Response time | 25 ns |
| EAN | 8435297850434 |
| RoHS compliant | Yes |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
It protects sensitive low voltage electrical equipment from transient overvoltages caused by lightning activity and electrical switching events.
The Mersen 83230504 is a Type 2+3 / Class II+III surge protection device.
It is designed for 24 V AC systems with a maximum continuous operating voltage of 30 V AC.
The device provides a maximum discharge current of 6 kA (8/20 μs) with a nominal discharge current of 3 kA.
It features a slim one-module DIN rail mounted monobloc design, making it ideal for compact electrical panels and control cabinets.
Mersen Surge-Trap® surge protection devices are trusted by electrical engineers, machine builders and maintenance professionals to protect sensitive electrical systems against damaging transient overvoltages.
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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...