Mersen 83230509 STMT23-6K75V-SP-SM Type 2+3 surge protection device with 6 kA Imax, 60 V nominal operating voltage, 75 V maximum continuous operating voltage, 2 pole slim monobloc construction and remote indication.
£82.51
The Mersen 83230509 is a compact and dependable Type 2+3 surge protection device (SPD) designed to protect sensitive electrical and electronic equipment from transient overvoltages. As part of the Mersen Surge-Trap Monobloc STMT23 series, this slim DIN rail mounted SPD provides reliable protection for low voltage power and control systems used in industrial automation, commercial installations and machinery.
Designed to protect against switching surges and indirect lightning effects, the STMT23 series combines effective surge protection with a space-saving monobloc construction. Its one-module format makes it ideal for electrical enclosures where panel space is limited, while its remote indication capability supports practical condition monitoring.
With a 6 kA maximum discharge current, 60 V nominal operating voltage and 75 V maximum continuous operating voltage, the 83230509 is suitable for 1Ph+N TT and TN-S systems. It offers dependable protection for control equipment, power supplies, communication systems and other sensitive electronic devices.
Surge protection devices help limit transient overvoltages before they reach connected equipment. This helps reduce the risk of damage to industrial control systems, communication equipment, power supplies and automation hardware while supporting dependable system operation.
The Mersen STMT23 range is engineered for demanding electrical installations where compact dimensions, reliable surge performance and straightforward DIN rail installation are essential. Its slim format makes the 83230509 well suited to modern control panels and distribution boards.
| Phase | Single Phase |
|---|---|
| Manufacturer | Mersen |
| Series | Surge-Trap Monobloc STMT23 |
| Model | STMT23-6K75V-SP-SM |
| Item number | 83230509 |
| Product type | Surge protection device |
| SPD type | Type 2+3 / Class II + III |
| Maximum discharge current | 6 kA Imax (8/20 µs) |
| Nominal discharge current | 3 kA |
| Nominal operating voltage | 60 V |
| Maximum continuous operating voltage | 75 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 |
| Indication | Microswitch remote indication |
| Short circuit withstand | 10 kA |
| EAN / UPC | 8435297850489 |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
The Mersen 83230509 protects sensitive electrical and electronic equipment against transient overvoltages in low voltage power and control 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 60 V nominal operating voltage with a 75 V maximum continuous operating voltage.
The 83230509 provides a 6 kA maximum discharge current (Imax) and a nominal discharge current of 3 kA.
Yes, the Mersen 83230509 includes microswitch 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 from damaging transient overvoltages.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
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...