Lovato SA1B3NA320R Type 1, Type 2 and Type 3 monoblock surge protection device with 3P+N configuration, 25kA impulse current per pole and integrated remote signalling.
£670.47
The Lovato SA1B3NA320R is a high-capacity Type 1, Type 2 and Type 3 monoblock surge protection device (SPD) designed to protect three-phase low-voltage electrical installations against lightning impulse currents, switching surges and transient overvoltages. Its 3P+N configuration provides coordinated protection for all three phase conductors and the neutral conductor.
With an IEC impulse current rating of 25 kA per pole using a 10/350 µs waveform, the SA1B3NA320R is designed for installations exposed to severe surge conditions. Its robust monoblock construction combines several levels of surge protection within a single device, helping simplify system design while providing reliable protection at the origin of an electrical installation.
The device has a nominal system voltage of 230/400 V AC, a nominal discharge current of 25 kA and a short-circuit current rating of 25 kA. An integrated remote signalling contact enables the operating condition of the SPD to be monitored through an alarm, building management system or industrial control system.
Surge protection devices divert damaging transient currents away from connected electrical equipment and safely discharge them towards earth. This helps protect insulation, control equipment and sensitive electronic components from premature failure while reducing the risk of costly downtime.
The Lovato SA1B3NA320R combines Type 1, Type 2 and Type 3 protection within a durable monoblock assembly. Its 25 kA impulse current rating per pole enables it to handle partial lightning currents, while its coordinated protection stages help limit lower-energy switching and induced overvoltages.
| Phase | Three Phase |
|---|---|
| Manufacturer | Lovato Electric |
| Series | SA1B |
| Model | SA1B3NA320R |
| Product type | Surge protection device |
| Construction | Monoblock |
| SPD classification | Type 1, Type 2 and Type 3 |
| System type | AC power line |
| Configuration | 3P+N |
| Protected conductors | Three phases and neutral |
| Nominal system voltage | 230/400 V AC |
| Impulse current (Iimp), 10/350 µs | 25 kA per pole |
| Nominal discharge current (In), 8/20 µs | 25 kA |
| Short-circuit current rating (Isccr) | 25 kA |
| Remote signalling | Integrated remote contact |
| Status indication | Optical |
| Mounting type | DIN rail |
| Product weight | Approximately 1,120 g |
| Compliance | IEC/EN 61643-11 |
| Certification | EAC |
| EAN | 8013975217641 |
| HS Code | 85365080 |
It protects three-phase electrical installations and connected equipment against partial lightning currents, switching surges and transient overvoltages.
The device provides combined Type 1, Type 2 and Type 3 surge protection for coordinated protection against lightning currents and lower-energy transient overvoltages.
The 3P+N configuration provides surge protection for all three phase conductors and the neutral conductor in a three-phase electrical installation.
The device has an IEC impulse current rating of 25 kA per pole using a 10/350 µs waveform.
Yes. It includes an integrated remote signalling contact that can be connected to an alarm, control system or building management system.
The surge protection device mounts onto a standard DIN rail inside a suitable main distribution board, switchboard or industrial control panel.
Lovato surge protection devices are used by electrical contractors, panel builders and automation engineers to protect critical three-phase installations against damaging lightning currents and 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...