Why Choose the Lovato SG24PA300 Surge Protection Device?
The Lovato SG24PA300 is a high-performance Type 2 surge protection device (SPD) designed to protect low-voltage three-phase electrical installations against transient overvoltages caused by indirect lightning strikes and switching operations. As part of the proven Lovato SG2 surge protection range, it provides dependable protection for commercial, industrial and photovoltaic AC distribution systems.
Designed for 230/400 V AC power systems, the SG24PA300 features a 4-pole configuration with plug-in replaceable protection cartridges for simplified maintenance and reduced downtime. Its compact DIN rail mounted design allows fast installation within switchboards, distribution panels and industrial control cabinets while ensuring long-term reliability.
With a 20 kA nominal discharge current (In) per pole and a 50 kA maximum discharge current (Imax), the SG24PA300 complies with IEC/EN 61643-11, helping protect valuable electrical equipment against damaging voltage transients whilst maintaining system availability.
Key Advantages
Reliable Type 2 surge protection device for three-phase AC installations.
4-pole configuration for complete system protection.
20 kA nominal discharge current per pole.
50 kA maximum discharge current for enhanced surge protection.
Compact DIN rail mounting for distribution boards and control panels.
Key Features
Lovato Electric SG2 series.
Type 2 surge protection device.
230/400 V AC system.
4-pole configuration.
300 V AC maximum continuous operating voltage (Uc).
20 kA nominal discharge current (In).
50 kA maximum discharge current (Imax).
Voltage protection level <1.5 kV.
Integrated thermal disconnection protection.
Front operational and end-of-life status indicator.
DIN rail mounting.
Suitable for photovoltaic AC applications.
Reliable Protection for Three-Phase Power Systems
The Lovato SG24PA300 safely diverts transient overvoltages away from connected equipment, helping reduce downtime, extend equipment life and improve the reliability of electrical installations exposed to switching surges and lightning-induced overvoltages.
Its replaceable cartridges, thermal protection system and compact DIN rail construction make it an excellent solution for industrial machinery, commercial buildings, manufacturing facilities and photovoltaic AC distribution systems.
Typical Applications
Main electrical distribution boards.
Industrial control panels.
Commercial buildings.
Manufacturing facilities.
Motor control centres.
Photovoltaic AC distribution systems.
Technical Specifications
Phase
Three Phase
Manufacturer
Lovato Electric
Series
SG2
Model
SG24PA300
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
4P
Nominal discharge current (In 8/20 μs)
20 kA
Maximum discharge current (Imax 8/20 μs)
50 kA
Voltage protection level (Up)
<1.5 kV
Response time
<25 ns
Maximum short-circuit current
50 kA (line fuse ≤250 A)
Protection cartridge
Plug-in replaceable
Remote signalling
No
Mounting type
DIN rail
DIN modules
4
Operating temperature
-40°C to +85°C
Weight
Approx. 520 g
Compliance
IEC/EN 61643-11
HS Code
85365080
Frequently Asked Questions
What is the Lovato SG24PA300 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 the SG24PA300?
The SG24PA300 is a Type 2 surge protection device designed for low-voltage AC power distribution systems.
Can the protection cartridges be replaced?
Yes. The device features plug-in replaceable cartridges, allowing straightforward maintenance when required.
Does this model include a remote signalling contact?
No. The SG24PA300 includes a front visual status indicator only. Models ending in R include remote signalling contacts.
Where is the SG24PA300 typically installed?
It is typically mounted on a DIN rail inside electrical distribution boards, switchgear assemblies and industrial control panels.
Trusted Protection for Industrial Electrical Installations
Lovato Electric surge protection devices are trusted worldwide by electrical contractors, panel builders and automation engineers to provide dependable protection for commercial, industrial and renewable energy installations.
Phase
Three Phase
Manufacturer
Lovato Electric
Series
SG2
Model
SG24PA300
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
4P
Nominal discharge current (In 8/20 μs)
20 kA
Maximum discharge current (Imax 8/20 μs)
50 kA
Voltage protection level (Up)
<1.5 kV
Response time
<25 ns
Maximum short-circuit current
50 kA (line fuse ≤250 A)
Protection cartridge
Plug-in replaceable
Remote signalling
No
Mounting type
DIN rail
DIN modules
4
Operating temperature
-40°C to +85°C
Weight
Approx. 520 g
Compliance
IEC/EN 61643-11
HS Code
85365080
No documents available for this product.
Delivery
We offer fast UK delivery on all stocked items. Orders placed before 3pm Monday to Friday are eligible for next-day delivery.
Standard delivery: 2–3 working days
Next-day delivery: available on in-stock items when ordered before 3pm
Express options available — contact us for details
Returns
If you need to return an item, please contact our sales team within 30 days of receipt. Items must be returned unused in their original packaging.
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
Priority sourcing and supply support
Flexible payment terms for qualifying organisations
Support for engineering, maintenance, and operations
500 +
Stock lines ready to ship
1,000 +
Same day dispatches
3500 +
Customers supported
28
Trusted Manfacturers
● frequently asked questions
Common questions about our products and support
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
What product ranges do you supply
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
Can you help specify the correct part?
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Do you have stock for urgent orders?
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
What are your delivery times and costs?
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
What about warranties, returns and faulty items?
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
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...
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...