Mersen 83230500 STMT23-6K20V-SP-S Type 2+3 slim monobloc surge protection device with 6 kA discharge capacity, 20 V AC maximum continuous operating voltage and SP TT/TNS configuration.
£73.55
The Mersen 83230500 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 is ideal for protecting sensitive control, communication and power supply equipment where panel space is limited.
Designed for DIN rail installation, this monobloc surge protection device provides fine protection against voltage spikes caused by lightning activity, switching operations and electrical disturbances. Its slim single-module format allows easy installation in compact control panels, distribution boards and machinery cabinets.
With a maximum discharge current of 6 kA (8/20 μs), a 20 V AC maximum continuous operating voltage (Uc) and a 1 phase + neutral SP TT/TNS configuration, the Mersen 83230500 is well suited for sensitive low voltage systems requiring reliable surge protection in a compact footprint.
Surge protection devices safely divert transient overvoltages away from connected equipment before they can cause electronic damage, insulation failure or unplanned downtime. Compact Type 2+3 devices are particularly useful where fine protection is required close to sensitive equipment.
The Mersen Surge-Trap® Monobloc STMT23 Series is designed for AC and DC voltage applications, making it suitable for control circuits, instrumentation, communication systems and compact electrical panels requiring reliable surge protection.
| Phase | Single Phase |
|---|---|
| Manufacturer | Mersen |
| Series | Surge-Trap® Monobloc STMT23 Series |
| Model | STMT23-6K20V-SP-S |
| SKU | 83230500 |
| 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) | 12 V AC |
| Maximum continuous operating voltage (Uc L-N) | 20 V AC |
| 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 |
| Short circuit withstand (ISCCR) | 10 kA |
| Maximum back-up fuse | 63 A gG |
| RoHS compliant | Yes |
| EAN/UPC | 8435297850410 |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
It is used to protect sensitive low voltage electrical equipment from transient overvoltages caused by lightning activity, switching events and electrical disturbances.
The Mersen 83230500 is a Type 2+3 / Class II+III surge protection device.
The device provides a maximum discharge current of 6 kA (8/20 μs) with a nominal discharge current of 3 kA.
It is designed for 1 phase + neutral SP TT/TNS systems in low voltage AC and DC applications.
It has a slim one-module monobloc DIN rail format, making it suitable for compact electrical panels and control cabinets.
Mersen Surge-Trap® surge protection devices are trusted by electrical engineers, panel builders and maintenance professionals to protect sensitive electrical systems from 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...