Lovato SG23NA300R Type 2 surge protection device with 3P+N configuration, plug-in cartridges, remote signalling contact and DIN rail mounting for AC power systems.
£220.80
The Lovato SG23NA300R is a high-performance Type 2 surge protection device (SPD) engineered to protect low-voltage three-phase electrical installations against transient overvoltages caused by indirect lightning strikes and switching operations. As part of the reliable Lovato SG2 surge protection series, it safeguards industrial equipment, commercial electrical systems and sensitive electronic devices from surge-related damage.
Designed for 230/400 V AC power systems, the SG23NA300R features a 3P+N configuration with plug-in replaceable protection cartridges and an integrated remote signalling contact for continuous status monitoring. Its DIN rail mounted design allows straightforward installation inside switchboards and industrial control panels.
Offering a 20 kA nominal discharge current (In) per pole and a 50 kA maximum discharge current (Imax) on line conductors, the SG23NA300R complies with IEC/EN 61643-11, providing dependable surge protection for industrial, commercial and photovoltaic electrical installations.
The Lovato SG23NA300R is designed to divert damaging transient overvoltages safely away from connected equipment, helping to reduce unplanned downtime and extend the service life of valuable electrical and electronic assets.
Its replaceable protection modules, thermal disconnection system and remote status indication make it an ideal solution for industrial automation, commercial buildings, manufacturing facilities and photovoltaic AC distribution systems.
| Phase | Three Phase |
|---|---|
| Manufacturer | Lovato Electric |
| Series | SG2 |
| Model | SG23NA300R |
| Product type | Type 2 Surge Protection Device (SPD) |
| Application | AC power lines |
| Rated system voltage | 230/400 V AC |
| Maximum continuous operating voltage (Uc) | 300 V AC |
| Number of poles | 3P+N |
| Nominal discharge current (In 8/20 μs) | 20 kA |
| Maximum discharge current (Imax 8/20 μs) | 50 kA (L-N) / 65 kA (N-PE) |
| Voltage protection level (Up) | <1.5 kV |
| Response time | <25 ns (L-N), <100 ns (N-PE) |
| Maximum short-circuit current | 50 kA (line fuse ≤250 A) |
| Remote signalling | Yes |
| Mounting type | DIN rail |
| DIN modules | 4 |
| Operating temperature | -40°C to +85°C |
| Weight | Approx. 492 g |
| Compliance | IEC/EN 61643-11 |
| HS Code | 85365080 |
It protects three-phase AC electrical installations from transient overvoltages caused by lightning activity and switching operations.
The SG23NA300R is a Type 2 surge protection device designed for low-voltage AC power distribution systems.
Yes. The device includes an integrated auxiliary contact that provides remote indication of its operational status.
Yes. The surge protection cartridges are plug-in and replaceable, allowing simple maintenance without replacing the complete unit.
It is typically installed on a DIN rail inside electrical distribution boards, industrial switchgear and control panels.
Lovato Electric surge protection devices are trusted worldwide by electrical contractors, panel builders and automation engineers to provide dependable protection for commercial and industrial power systems.
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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...