Why Choose the ABB OVR T2 1N 40-275 P QS Surge Protective Device?
The ABB OVR T2 1N 40-275 P QS is a compact and reliable Type 2 surge protective device (SPD) designed to protect single-phase low-voltage electrical installations and sensitive equipment against transient overvoltages caused by indirect lightning effects and switching events. As part of the ABB OVR QuickSafe surge protection range, it combines effective surge suppression with pluggable construction and DIN-rail mounting for straightforward installation and maintenance.
Designed for TT and TN-S 230 V AC single-phase plus neutral networks, the OVR T2 1N 40-275 P QS provides a maximum discharge current of 40 kA and a nominal discharge current of 20 kA using the standard 8/20 µs surge waveform. Its low voltage protection level helps limit transient voltage reaching connected electrical and electronic equipment.
With a maximum continuous operating voltage of 275 V AC and a voltage protection level of 1.25 kV, this 1+1 configuration SPD is suitable for main and sub-distribution boards in residential, commercial and industrial installations. Its pluggable modules, QuickSafe end-of-life indication and compatibility with ABB System pro M compact equipment make it a practical solution for coordinated low-voltage surge protection.
Key Advantages
- Reliable Type 2 surge protection for 230 V single-phase plus neutral installations.
- 40 kA maximum discharge current for effective transient overvoltage protection.
- 20 kA nominal discharge current using an 8/20 µs waveform.
- 275 V AC maximum continuous operating voltage.
- Low 1.25 kV voltage protection level helps protect sensitive equipment.
- Pluggable construction simplifies inspection and replacement.
- ABB QuickSafe technology provides clear end-of-life status indication.
- DIN-rail mounting integrates easily with ABB System pro M compact installations.
Key Features
- ABB OVR T2 QuickSafe series.
- Type 2 surge protective device.
- 1+1 protected-line configuration for phase and neutral protection.
- Suitable for TT and TN-S networks.
- 40 kA maximum discharge current Imax.
- 20 kA nominal discharge current In.
- 1.25 kV voltage protection level Up.
- 275 V AC maximum continuous operating voltage Uc.
- Pluggable surge protection modules for convenient maintenance.
- QuickSafe end-of-life indication for straightforward condition checking.
- Backup protection capability up to 125 A.
- Compact two-module DIN-rail format.
Reliable Type 2 Protection for Single-Phase Installations
Type 2 surge protective devices are designed to discharge surge currents generated by indirect lightning strikes and switching events before damaging transient voltages can reach connected equipment. The ABB OVR T2 1N 40-275 P QS uses an 8/20 µs surge-current characteristic and provides a low residual voltage to help protect electrical appliances, control equipment and sensitive electronics.
The 1+1 configuration is designed for phase and neutral protection in TT and TN-S systems. Its compact System pro M format makes the device suitable for main distribution boards as well as sub-distribution boards, while its pluggable design enables convenient maintenance without replacing the complete surge protection assembly.
Typical Applications
- Single-phase 230 V residential distribution boards.
- Commercial building electrical installations.
- TT and TN-S low-voltage distribution systems.
- Main and sub-distribution switchboards.
- Protection of sensitive electronic and control equipment.
- Building automation and electrical control panels.
- Industrial auxiliary and single-phase power circuits.
