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SA03NA320R - SURGE PROTECTION DEVICE TYPE 1-2 3P+N

SA03NA320R – SURGE PROTECTION DEVICE TYPE 1-2 3P+N

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.

SKU: SA03NA320RMPN: SA03NA320R
Price
List Price £350.69 ex VAT
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£350.69
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Manufacturer Lead Time

£350.69

Why Choose the Lovato SA03NA320R Surge Protection Device?

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.

Key Advantages

  • Combined Type 1 and Type 2 surge protection in one device.
  • 3P+N configuration for three-phase electrical installations with neutral.
  • 12.5 kA impulse current per pole using a 10/350 µs waveform.
  • 60 kA maximum surge current for dependable transient protection.
  • Replaceable plug-in cartridges simplify maintenance and servicing.
  • Integrated remote signalling contact supports external monitoring.
  • DIN rail mounting enables straightforward switchboard installation.

Key Features

  • Lovato SA0 surge protection device series.
  • Combined Type 1 and Type 2 SPD classification.
  • Three-phase plus neutral configuration (3P+N).
  • 320 V AC maximum continuous operating voltage.
  • 12.5 kA impulse discharge current per pole.
  • 25 kA nominal discharge current.
  • 60 kA maximum discharge current.
  • 1.5 kV voltage protection level.
  • Replaceable plug-in surge protection cartridges.
  • Visual operating-status indication.
  • Integrated remote status contact.
  • Compliant with IEC/EN 61643-11.

Reliable Three-Phase Surge Protection

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.

Typical Applications

  • Three-phase main distribution boards.
  • Industrial switchboards and control panels.
  • Commercial electrical installations.
  • Building management and automation systems.
  • Machinery control cabinets.
  • Installations with external lightning protection systems.
  • Protection of PLCs, drives and sensitive electronic equipment.

Technical Specifications

SPD Type Type 1+2
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
Device Type Surge protection device
Nominal Discharge Current (In) 25 kA
Remote Signal Yes

Frequently Asked Questions

What is the Lovato SA03NA320R used for?

It protects three-phase electrical installations and connected equipment against lightning impulse currents, switching surges and transient overvoltages.

What type of surge protection does the SA03NA320R provide?

The device provides combined Type 1 and Type 2 protection, allowing it to handle partial lightning currents and lower-energy transient overvoltages.

What does the 3P+N configuration mean?

The 3P+N configuration provides coordinated surge protection for all three phase conductors together with the neutral connection in a three-phase electrical system.

What is the impulse current rating of the SA03NA320R?

The device has an IEC impulse discharge current rating of 12.5 kA per pole using a 10/350 µs waveform.

Can the protection cartridges be replaced?

Yes. The SA03NA320R uses replaceable plug-in cartridges, allowing individual protection modules to be changed without replacing the complete device.

Does the SA03NA320R support remote monitoring?

Yes. It includes an integrated remote signalling contact for connection to an alarm, control system or building management system.

Trusted by Electrical Professionals Worldwide

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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