Why Choose the Lovato SG2C3NA275R Surge Protection Device?
The Lovato SG2C3NA275R is a compact Type 2 surge protection device (SPD) designed to protect low-voltage AC electrical installations against transient overvoltages caused by indirect lightning effects and switching events. Part of the Lovato SG2C surge protection range, this 3P+N device uses replaceable plug-in cartridges and is intended for three-phase AC power distribution systems.
The SG2C3NA275R has a rated discharge current In of 20 kA and a maximum discharge current Imax of 40 kA using the 8/20 µs waveform. Its maximum continuous operating voltage Uc is 275 V AC, while the voltage protection level Up is below 1.5 kV for both L-N and N-PE protection paths.
Designed for 230 V AC rated systems, the SG2C3NA275R incorporates thermal protection, frontal operating/end-of-life indication and an auxiliary remote status contact. Its compact two-module DIN rail construction makes it well suited to secondary distribution boards, industrial control panels and other installations requiring dependable three-phase surge protection.
Key Advantages
- Dedicated Type 2 surge protection for AC power distribution systems.
- 3P+N configuration for three-phase installations with neutral.
- 20 kA rated discharge current In using an 8/20 µs waveform.
- 40 kA maximum discharge current Imax for robust transient protection.
- 275 V AC maximum continuous operating voltage Uc.
- Replaceable plug-in cartridges simplify servicing and maintenance.
- Integrated remote status contact enables external monitoring.
- Compact two-module DIN rail format saves valuable distribution-board space.
Key Features
- Lovato SG2C surge protection series.
- Type 2 surge protection device.
- 3P+N pole configuration.
- 230 V AC rated voltage.
- 275 V AC maximum continuous operating voltage Uc.
- 20 kA rated discharge current In at 8/20 µs.
- 40 kA maximum discharge current Imax at 8/20 µs.
- Voltage protection level Up <1.5 kV for L-N and N-PE.
- Response time of <25 ns for L-N.
- Integrated thermal protection.
- Frontal operating/end-of-life indication with auxiliary remote contact.
- Replaceable plug-in cartridge construction.
- 2-module DIN rail mounting.
Reliable Surge Protection for Three-Phase AC Systems
Type 2 surge protection devices are used within low-voltage distribution systems to limit transient overvoltages caused by indirect lightning effects and switching operations. The Lovato SG2C3NA275R provides coordinated protection across a 3P+N system, helping prevent damaging surge energy from reaching sensitive electrical and electronic equipment.
The SG2C series uses replaceable plug-in cartridges for quick servicing, while integrated thermal protection and clear status indication support dependable long-term operation. The auxiliary contact fitted to the SG2C3NA275R also allows its operating or end-of-life condition to be monitored remotely from an external control or signalling system.
Typical Applications
- Three-phase AC electrical distribution boards.
- Secondary power distribution panels.
- Industrial automation and control panels.
- Commercial building electrical systems.
- Machine control cabinets and production equipment.
- Protection of sensitive electrical and electronic equipment against transient overvoltages.
