Lovato SA1B4PA320R Type 1, Type 2 and Type 3 four-pole monoblock surge protection device with 25kA impulse current per pole, 320V AC maximum continuous operating voltage and remote signalling.
£670.47
The Lovato SA1B4PA320R is a high-capacity Type 1, Type 2 and Type 3 monoblock surge protection device (SPD) designed to protect low-voltage electrical installations against lightning impulse currents, induced surges and switching overvoltages. Its four-pole configuration provides coordinated surge protection across four conductors in suitable three-phase AC power systems.
With an IEC impulse current rating of 25 kA per pole using a 10/350 µs waveform, the SA1B4PA320R is engineered for installations exposed to severe transient conditions. Its monoblock construction combines several surge-protection classes within one robust device, simplifying installation while providing effective protection at main distribution and sub-distribution level.
The device supports a maximum continuous operating voltage of 320 V AC, a nominal discharge current of 25 kA per pole and a maximum surge current of 100 kA. An integrated remote signalling contact allows the SPD's operating status 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, automation components and sensitive electronics from premature failure while reducing the risk of costly equipment damage and unplanned downtime.
The Lovato SA1B4PA320R combines several surge-protection classes within a durable monoblock assembly. Its 25 kA impulse current rating per pole enables it to manage partial lightning currents, while its high surge-current capacity provides robust protection against severe induced and switching overvoltages.
| Phase | Three Phase |
|---|---|
| Manufacturer | Lovato Electric |
| Series | SA1B |
| Model | SA1B4PA320R |
| Product type | Surge protection device |
| Construction | Monoblock |
| SPD classification | Type 1, Type 2 and Type 3 |
| Operating voltage type | AC |
| Application | AC power lines |
| Number of poles | 4P |
| Maximum continuous operating voltage (Uc) | 320 V AC |
| Impulse current (Iimp), 10/350 µs | 25 kA per pole |
| Nominal discharge current (In), 8/20 µs | 25 kA per pole |
| Maximum surge current | 100 kA |
| Voltage protection level (Up) | 1.4 kV |
| Remote signalling | Integrated remote contact |
| Status indication | Optical |
| Protection rating | IP20 |
| Number of DIN modules | 8 |
| Mounting type | DIN rail |
| Dimensions (H × W × D) | Approximately 144 × 72 × 99 mm |
| Operating temperature | -40°C to +80°C |
| Compliance | IEC/EN 61643-11 |
| HS Code | 85365080 |
It protects low-voltage electrical installations and connected equipment against partial lightning currents, induced surges, switching events and transient overvoltages.
The device provides combined Type 1, Type 2 and Type 3 surge protection, supporting coordinated protection against lightning currents and lower-energy transient overvoltages.
The device has an IEC impulse current rating of 25 kA per pole using a 10/350 µs waveform.
The four-pole design provides coordinated surge protection across four conductors in a suitable three-phase electrical distribution system.
Yes. It includes an integrated remote signalling contact that can be connected to an alarm, control system or building management system.
The 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 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...