Why Choose the Lovato SG2C3NA275 Type 2 Surge Protection Device?
The Lovato SG2C3NA275 is a compact Type 2 surge protection device (SPD) designed to protect three-phase AC power systems and connected electrical equipment against transient overvoltages. As part of the Lovato SG2C surge protection range, it features a 3P+N configuration and plug-in protection cartridges for convenient installation and servicing in low-voltage distribution systems.
Designed for 230/400 V AC systems, the SG2C3NA275 has a maximum continuous operating voltage Uc of 275 V AC and a rated discharge current In of 20 kA per pole using an 8/20 µs waveform. Its maximum discharge current Imax is 40 kA for both L-N and N-PE protection paths, providing robust protection against transient surges associated with switching operations and indirect lightning effects.
The SG2C3NA275 provides a voltage protection level Up of less than 1.5 kV and incorporates thermal isolation protection together with frontal operating/end-of-life indication. Its compact 2-module DIN rail format makes it particularly suitable for secondary distribution boards, control panels and terminal equipment where effective surge protection and efficient use of panel space are important.
Key Advantages
- Compact Type 2 surge protection for three-phase AC power systems.
- 3P+N configuration for phase-to-neutral and neutral-to-earth surge protection.
- 20 kA rated discharge current In (8/20 µs) per pole.
- 40 kA maximum discharge current Imax for robust transient protection.
- <1.5 kV voltage protection level Up.
- Replaceable plug-in cartridges simplify servicing and maintenance.
- Compact 2 DIN module construction saves distribution-board space.
Key Features
- Lovato SG2C series surge protection device.
- Type 2 / Class II SPD.
- 3P+N pole configuration.
- Designed for 230/400 V AC power systems.
- 275 V AC maximum continuous operating voltage Uc.
- 20 kA rated discharge current In (8/20 µs).
- 40 kA maximum discharge current Imax (8/20 µs).
- <1.5 kV voltage protection level Up.
- Integrated thermal isolation protection.
- Frontal operating and end-of-life status indication.
- Plug-in replaceable protection cartridges.
- Compact DIN rail mounted construction.
Reliable Type 2 Protection for Three-Phase AC Systems
Type 2 surge protection devices such as the Lovato SG2C3NA275 are designed to limit transient overvoltages within low-voltage AC distribution systems. During a surge event, the SPD provides a controlled path for surge current, helping reduce the voltage reaching downstream equipment and protecting sensitive electrical and electronic components from potentially damaging transients.
The SG2C3NA275 combines a 20 kA nominal discharge current with a 40 kA maximum discharge capability and a voltage protection level below 1.5 kV. Its 3P+N arrangement, thermal protection, visual status indication and replaceable cartridges make it a practical solution for coordinated surge protection in three-phase industrial, commercial and building electrical systems.
Typical Applications
- Three-phase 230/400 V AC distribution boards.
- Industrial machinery and automation control panels.
- Commercial electrical distribution systems.
- Building services and infrastructure installations.
- Protection of sensitive electronic and control equipment.
- Secondary distribution boards and terminal equipment.
