Why Choose the Lovato SA1B3PA320R Surge Protection Device?
The Lovato SA1B3PA320R 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 direct lightning effects, induced surges and switching overvoltages. Its three-pole configuration provides coordinated protection across all three phase conductors in industrial and commercial AC power systems.
With an IEC impulse current rating of 25 kA per pole using a 10/350 µs waveform, the SA1B3PA320R is suitable for installations exposed to severe surge conditions. Its monoblock construction combines several surge protection classes within one robust unit, helping simplify installation while providing effective protection at main 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 discharge current of 100 kA per pole. An integrated remote signalling contact enables connection to an alarm, building management system or industrial control system for convenient status monitoring.
Key Advantages
- Combined Type 1, Type 2 and Type 3 surge protection.
- Three-pole configuration for three-phase AC installations.
- 25 kA impulse current per pole using a 10/350 µs waveform.
- 100 kA maximum discharge current per pole for severe transient conditions.
- Robust monoblock construction for dependable long-term protection.
- Integrated remote signalling contact for external status monitoring.
- Optical status indication allows straightforward visual inspection.
- DIN rail mounting simplifies installation within distribution equipment.
Key Features
- Lovato SA1B monoblock surge protection series.
- Type 1, Type 2 and Type 3 SPD classification.
- Three-pole (3P) configuration.
- 230/400 V AC system compatibility.
- 320 V AC maximum continuous operating voltage.
- 25 kA impulse discharge current per pole.
- 25 kA nominal discharge current per pole.
- 100 kA maximum discharge current per pole.
- 1.4 kV voltage protection level.
- IP20 protection rating.
- Integrated remote relay output.
- Compliant with IEC/EN 61643-11.
High-Capacity Three-Phase Surge Protection
Surge protection devices divert damaging transient currents away from connected equipment and safely discharge them towards earth. This helps protect electrical insulation, automation components and sensitive electronic equipment from premature failure while reducing the risk of costly downtime.
The Lovato SA1B3PA320R combines several surge protection classes within a durable monoblock assembly. Its 25 kA impulse current rating per pole allows it to manage partial lightning currents, while its 100 kA maximum discharge capacity provides robust protection against severe switching and induced overvoltages.
Typical Applications
- Three-phase main electrical distribution boards.
- Industrial switchboards and control panels.
- Commercial three-phase electrical installations.
- Buildings with external lightning protection systems.
- Industrial machinery and automation equipment.
- Building management and monitoring systems.
- Protection of PLCs, variable speed drives and sensitive electronics.
