Why Choose the Lovato SA1B3NA320R Surge Protection Device?
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.
Key Advantages
- Combined Type 1, Type 2 and Type 3 surge protection.
- 3P+N configuration for three-phase systems with neutral.
- 25 kA impulse current per pole using a 10/350 µs waveform.
- Robust monoblock construction for dependable operation.
- Integrated remote signalling contact for external status monitoring.
- Suitable for installations exposed to direct and indirect lightning effects.
- DIN rail mounting supports straightforward switchboard installation.
Key Features
- Lovato SA1B monoblock surge protection series.
- Type 1, Type 2 and Type 3 SPD classification.
- Three-phase plus neutral configuration (3P+N).
- 25 kA impulse current per pole.
- 25 kA nominal discharge current.
- 230/400 V AC nominal system voltage.
- 25 kA short-circuit current rating.
- Integrated optical status indication.
- Remote output for condition monitoring.
- DIN rail mounting for electrical distribution panels.
- Compliant with IEC/EN 61643-11.
- EAC certified.
High-Capacity Three-Phase Surge Protection
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.
Typical Applications
- Three-phase main electrical distribution boards.
- Commercial and industrial switchboards.
- Electrical systems with three phases and neutral.
- Buildings with external lightning protection systems.
- Industrial machinery and automation panels.
- Building management and monitoring systems.
- Protection of PLCs, drives and sensitive electronic equipment.
