Lovato SA03NA320R combined Type 1 and Type 2 surge protection device with 3P+N configuration, 320V AC maximum continuous operating voltage, replaceable cartridges and remote signalling contact.
£350.69
The Lovato SA03NA320R is a combined Type 1 and Type 2 surge protection device (SPD) designed to protect three-phase low-voltage electrical installations against lightning impulse currents and transient overvoltages. Its 3P+N configuration provides coordinated protection for all three phase conductors and the neutral connection.
Featuring replaceable plug-in protection cartridges, the SA03NA320R allows straightforward maintenance without replacing the complete surge protection assembly. An integrated remote signalling contact enables connection to external alarms, building management systems or industrial monitoring equipment for convenient status supervision.
With an IEC impulse discharge current of 12.5 kA per pole using a 10/350 µs waveform, a maximum continuous operating voltage of 320 V AC and a maximum surge current of 60 kA, the SA03NA320R provides dependable protection for industrial distribution boards, commercial switchboards and automation control panels.
Surge protection devices divert damaging transient currents away from connected equipment and safely discharge them towards earth. This helps reduce the risk of insulation failure, electronic component damage, production downtime and premature equipment replacement.
By combining Type 1 and Type 2 protection, the Lovato SA03NA320R can manage partial lightning currents while also limiting induced lightning surges and switching overvoltages. Its 3P+N arrangement provides coordinated protection for three-phase installations, while the remote contact allows the device condition to be monitored without direct visual inspection.
| Phase | Three Phase |
|---|---|
| Manufacturer | Lovato Electric |
| Series | SA0 |
| Model | SA03NA320R |
| Product type | Surge protection device |
| SPD classification | Type 1 and Type 2 |
| Operating voltage type | AC |
| Electrical configuration | 3P+N |
| Number of protected conductors | Three phases plus neutral |
| Rated system voltage | 230/400 V AC |
| Maximum continuous operating voltage (Uc) | 320 V AC |
| Impulse current (Iimp), 10/350 µs | 12.5 kA per pole |
| Nominal discharge current (In), 8/20 µs | 25 kA |
| Maximum discharge current (Imax), 8/20 µs | 60 kA |
| Voltage protection level (Up) | 1.5 kV |
| Follow-current extinguishing capability | 100 kA |
| Cartridge type | Replaceable plug-in cartridge |
| Remote signalling | Integrated remote contact |
| Mounting type | DIN rail |
| Dimensions (H × W × D) | Approximately 103 × 54 × 72 mm |
| Operating temperature | -40°C to +80°C |
| Weight | Approximately 673 g |
| Compliance | IEC/EN 61643-11 |
| Certification | EAC |
| EAN | 8013975191606 |
| HS Code | 85365080 |
It protects three-phase electrical installations and connected equipment against lightning impulse currents, switching surges and transient overvoltages.
The device provides combined Type 1 and Type 2 protection, allowing it to handle partial lightning currents and lower-energy transient overvoltages.
The 3P+N configuration provides coordinated surge protection for all three phase conductors together with the neutral connection in a three-phase electrical system.
The device has an IEC impulse discharge current rating of 12.5 kA per pole using a 10/350 µs waveform.
Yes. The SA03NA320R uses replaceable plug-in cartridges, allowing individual protection modules to be changed without replacing the complete device.
Yes. It includes an integrated remote signalling contact for connection to an alarm, control system or building management system.
Lovato surge protection devices are used by electrical contractors, panel builders and automation engineers to protect critical three-phase installations against damaging lightning and switching 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...