Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
SG23NA300R – SURGE PROTECTION DEVICE TYPE 2 3P+N PLUGIN + RELAY
Lovato SG23NA300R Type 2 surge protection device with 3P+N configuration, plug-in cartridges, remote signalling contact and DIN rail mounting for AC power systems.
£132.48
Why Choose the Lovato SG23NA300R Surge Protection Device?
The Lovato SG23NA300R is a high-performance Type 2 surge protection device (SPD) engineered to protect low-voltage three-phase electrical installations against transient overvoltages caused by indirect lightning strikes and switching operations. As part of the reliable Lovato SG2 surge protection series, it safeguards industrial equipment, commercial electrical systems and sensitive electronic devices from surge-related damage.
Designed for 230/400 V AC power systems, the SG23NA300R features a 3P+N configuration with plug-in replaceable protection cartridges and an integrated remote signalling contact for continuous status monitoring. Its DIN rail mounted design allows straightforward installation inside switchboards and industrial control panels.
Offering a 20 kA nominal discharge current (In) per pole and a 50 kA maximum discharge current (Imax) on line conductors, the SG23NA300R complies with IEC/EN 61643-11, providing dependable surge protection for industrial, commercial and photovoltaic electrical installations.
Key Advantages
- Reliable Type 2 surge protection for three-phase AC power systems.
- 3P+N configuration for comprehensive phase and neutral protection.
- 20 kA nominal discharge current per pole.
- 50 kA maximum discharge current on L-N circuits.
- Integrated remote signalling contact for monitoring device status.
- Plug-in replaceable cartridges simplify maintenance and reduce downtime.
Key Features
- Lovato Electric SG2 series.
- Type 2 surge protection device.
- 230/400 V AC system.
- 3P+N pole configuration.
- 300 V AC maximum continuous operating voltage (Uc).
- 20 kA nominal discharge current (In).
- 50 kA / 65 kA maximum discharge current (Imax).
- Voltage protection level <1.5 kV.
- Integrated thermal disconnection protection.
- Front status indicator with auxiliary remote contact.
- DIN rail mounting.
- Suitable for photovoltaic AC applications.
Reliable Protection for Three-Phase Electrical Systems
The Lovato SG23NA300R is designed to divert damaging transient overvoltages safely away from connected equipment, helping to reduce unplanned downtime and extend the service life of valuable electrical and electronic assets.
Its replaceable protection modules, thermal disconnection system and remote status indication make it an ideal solution for industrial automation, commercial buildings, manufacturing facilities and photovoltaic AC distribution systems.
Typical Applications
- Main electrical distribution boards.
- Industrial control panels.
- Motor control centres.
- Commercial buildings.
- Manufacturing facilities.
- Photovoltaic AC distribution systems.
Technical Specifications
Tick the specs you need, then view products that match.
| Phase | Three Phase | |
|---|---|---|
| Poles | 3-pole + N | |
| Device Type | Surge protection device | |
| SPD Type | Type 2 | |
| Nominal Discharge Current (In) | 20 kA | |
| Remote Signal | Yes | |
| Manufacturer | Lovato Electric | |
| Series | SG2 | |
| Model | SG23NA300R | |
| Product type | Type 2 Surge Protection Device (SPD) | |
| Application | AC power lines | |
| Rated system voltage | 230/400 V AC | |
| Maximum continuous operating voltage (Uc) | 300 V AC | |
| Number of poles | 3P+N | |
| Nominal discharge current (In 8/20 μs) | 20 kA | |
| Maximum discharge current (Imax 8/20 μs) | 50 kA (L-N) / 65 kA (N-PE) | |
| Voltage protection level (Up) | <1.5 kV | |
| Response time | <25 ns (L-N), <100 ns (N-PE) | |
| Maximum short-circuit current | 50 kA (line fuse ≤250 A) | |
| Remote signalling | Yes | |
| Mounting type | DIN rail | |
| DIN modules | 4 | |
| Operating temperature | -40°C to +85°C | |
| Weight | Approx. 492 g | |
| Compliance | IEC/EN 61643-11 | |
| HS Code | 85365080 |
Frequently Asked Questions
What is the Lovato SG23NA300R used for?
It protects three-phase AC electrical installations from transient overvoltages caused by lightning activity and switching operations.
What type of surge protection device is this?
The SG23NA300R is a Type 2 surge protection device designed for low-voltage AC power distribution systems.
Does it include remote monitoring?
Yes. The device includes an integrated auxiliary contact that provides remote indication of its operational status.
Can the protection cartridges be replaced?
Yes. The surge protection cartridges are plug-in and replaceable, allowing simple maintenance without replacing the complete unit.
Where is the SG23NA300R typically installed?
It is typically installed on a DIN rail inside electrical distribution boards, industrial switchgear and control panels.
Trusted Protection for Industrial Power Distribution
Lovato Electric surge protection devices are trusted worldwide by electrical contractors, panel builders and automation engineers to provide dependable protection for commercial and industrial power systems.
