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SG21PA300 Lovato SURGE PROTECTION DEVICE TYPE 2 1P
Lovato SG21PA300 is a 1P Type 2 surge protection device with a replaceable plug-in cartridge, 20 kA rated discharge current, 50 kA maximum discharge current and 300 V AC maximum continuous operating voltage for AC electrical systems.
£38.00
Why Choose the Lovato SG21PA300 Type 2 Surge Protection Device?
The Lovato SG21PA300 is a compact and reliable Type 2 surge protection device (SPD) designed to protect low-voltage AC electrical installations against transient overvoltages caused by indirect lightning effects, induced surges and electrical switching operations. As part of the Lovato Electric SG2 series, it features a plug-in cartridge design that simplifies maintenance and replacement when the surge protection element reaches the end of its service life.
Designed with a 1P configuration, the SG21PA300 provides a rated discharge current In of 20 kA and a maximum discharge current Imax of 50 kA. Its voltage protection level Up of less than 1.5 kV helps limit potentially damaging transient voltages reaching downstream electrical and electronic equipment.
With a rated voltage of 230 V AC and maximum continuous operating voltage Uc of 300 V AC, the SG21PA300 is suitable for AC power line applications requiring Type 2 surge protection. Its compact single-module DIN rail construction, integrated thermal protection and frontal operating/end-of-life indication make it straightforward to install and maintain within electrical distribution and control panels.
Key Advantages
- Type 2 surge protection for low-voltage AC power systems.
- 1P configuration in a compact single-module format.
- 20 kA rated discharge current In for effective transient surge protection.
- 50 kA maximum discharge current Imax for high surge handling capability.
- <1.5 kV voltage protection level Up to help protect downstream equipment.
- Replaceable plug-in cartridge design simplifies maintenance.
- Integrated thermal protection and frontal operating/end-of-life indication.
Key Features
- Lovato Electric SG2 series.
- Type 2 surge protection device.
- 1P pole configuration.
- 230 V AC rated voltage.
- 300 V AC maximum continuous operating voltage Uc.
- 20 kA rated discharge current In (8/20 µs).
- 50 kA maximum discharge current Imax (8/20 µs).
- <1.5 kV voltage protection level Up.
- <25 ns response time.
- Integrated thermal protection.
- Frontal operating/end-of-life status indication.
- Replaceable plug-in surge protection cartridge.
- Compact single-module DIN rail design.
Reliable Protection Against Transient Overvoltages
Type 2 surge protection devices such as the Lovato SG21PA300 divert transient surge currents away from sensitive electrical equipment while limiting the voltage appearing across the protected installation. They are designed to provide protection against transient overvoltages associated with indirect lightning effects and switching events within low-voltage AC distribution systems.
The SG2 series combines high surge discharge capability with replaceable plug-in cartridges, thermal protection and clear frontal status indication. The SG21PA300 provides these features in a compact single-module format, making it suitable for distribution boards and control panels where DIN rail space is limited.
Typical Applications
- Single-phase AC electrical distribution systems.
- Residential and commercial distribution boards.
- Industrial control and distribution panels.
- Building services and automation systems.
- Electrical installations containing sensitive electronic equipment.
- AC power systems requiring Type 2 transient overvoltage protection.
Technical Specifications
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| Device Type | Surge protection device | |
|---|---|---|
| SPD Type | Type 2 | |
| HS Code | 85365080 | |
| Manufacturer | Lovato Electric | |
| Series | SG2 | |
| Model | SG21PA300 | |
| Product type | Surge protection device (SPD) | |
| SPD type / class | Type 2 | |
| Application | AC power lines | |
| Operating voltage type | AC | |
| Pole configuration | 1P | |
| Number of DIN modules | 1 | |
| Rated voltage | 230 V AC | |
| Maximum continuous operating voltage Uc | 300 V AC | |
| Rated 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 at 50 Hz | 50 kA with line fuse ≤250 A / 25 kA with 315 A line fuse | |
| Backup protection fuse | 125–250 A gG for Isccr 50 kA / 125–315 A gG for Isccr 25 kA | |
| Thermal protection | Yes | |
| Status indication | Frontal operating / end-of-life indication | |
| Cartridge type | Plug-in / replaceable | |
| Mounting type | DIN rail | |
| Maximum flexible conductor section | 25 mm² | |
| Maximum rigid conductor section | 35 mm² | |
| Operating temperature | -40 to +85 °C | |
| Maximum altitude | 2,000 m | |
| Dimensions (H × W × D) | approx. 90 × 18 × 68 mm | |
| Weight | approx. 150.3 g | |
| EAN | 8013975232705 | |
| ETIM classification | EC000941 | |
| Standards | IEC/EN 61643-11 |
Frequently Asked Questions
What is the Lovato SG21PA300 used for?
The SG21PA300 is a Type 2 surge protection device used to protect AC electrical installations and connected equipment against transient overvoltages caused by indirect lightning effects, induced surges and electrical switching events.
What is the rated discharge current of the SG21PA300?
The device has a rated discharge current In (8/20 µs) of 20 kA.
What is the maximum discharge current of the SG21PA300?
The SG21PA300 has a maximum discharge current Imax (8/20 µs) of 50 kA.
What voltage is the SG21PA300 designed for?
The SG21PA300 has a rated voltage of 230 V AC and a maximum continuous operating voltage Uc of 300 V AC.
Can the surge protection cartridge be replaced?
Yes. The SG21PA300 uses a plug-in cartridge design, allowing the surge protection cartridge to be replaced while retaining the DIN rail base assembly.
Trusted Surge Protection from Lovato Electric
Lovato Electric SG2 surge protection devices provide dependable Type 2 protection for low-voltage AC distribution systems, combining high surge discharge capability with replaceable cartridges, thermal protection and clear operating status indication.
