Why Choose the ABB OVR T2 4L 40-275s P TS QS Surge Protective Device?
The ABB OVR T2 4L 40-275s P TS QS is a four-pole Type 2 surge protective device (SPD) designed to protect three-phase low-voltage electrical installations against transient overvoltages caused by indirect lightning effects and switching events. Identified by ABB order code 2CTB815704R1100, it is designed for 230/400 V AC TN-S networks and protects four lines within a compact DIN rail assembly.
This ABB OVR model combines varistor technology with patented QuickSafe technology and the Safety Reserve system. The Safety Reserve function provides an additional protection stage, helping maintain a level of surge protection after the primary protection stage reaches its end-of-life condition and giving maintenance personnel an opportunity to arrange cartridge replacement.
The OVR T2 4L 40-275s P TS QS provides a 20 kA nominal discharge current (In) and 40 kA maximum discharge current (Imax) using an 8/20 µs waveform, together with a 1.5 kV voltage protection level (Up). Pluggable cartridges, local status indication and the integrated TS remote signalling contact support straightforward inspection, monitoring and maintenance.
Key Advantages
- Type 2 / Class II surge protection for three-phase TN-S power-distribution systems.
- 20 kA nominal discharge current (In) using an 8/20 µs waveform.
- 40 kA maximum discharge current (Imax) using an 8/20 µs waveform.
- 275 V AC maximum continuous operating voltage (Uc).
- Patented Safety Reserve system supports preventive maintenance while retaining reserve protection.
- QuickSafe technology incorporates thermal disconnection for improved SPD safety.
- TS auxiliary contact enables remote monitoring of surge-protection status.
- Pluggable protection cartridges simplify servicing without replacing the complete DIN rail assembly.
Key Features
- ABB OVR T2 surge protection range.
- Type 2 / Class II surge protective device.
- Four protected lines / four poles.
- Designed for TN-S networks.
- 230/400 V AC nominal system voltage.
- 275 V AC maximum continuous operating voltage (Uc).
- 20 kA nominal discharge current (In, 8/20 µs).
- 40 kA maximum discharge current (Imax, 8/20 µs).
- 2 kA impulse current (Iimp, 10/350 µs).
- 1.5 kV voltage protection level (Up).
- ≤25 ns response time.
- 100 kA short-circuit withstand capability.
- Patented QuickSafe and Safety Reserve technologies.
- Visual status indication plus 1NO + 1NC remote signalling contact.
- Pluggable, four-module DIN rail construction.
Reliable Type 2 Protection with QuickSafe and Safety Reserve Technology
Type 2 SPDs are intended to discharge surge currents associated with indirect lightning effects and switching transients, with their primary discharge performance characterised using the 8/20 µs waveform. The ABB OVR T2 4L 40-275s P TS QS combines a 20 kA nominal discharge current with a 40 kA maximum discharge current and 1.5 kV protection level to help limit transient voltages reaching downstream equipment.
ABB's Safety Reserve system adds a secondary protection stage to support preventive maintenance, while QuickSafe technology provides integrated thermal disconnection. Together with replaceable cartridges, visual status indication and the TS auxiliary contact, these features make the SPD suitable for installations where protection availability and clear maintenance indication are important.
Typical Applications
- 230/400 V AC TN-S electrical networks.
- Main low-voltage distribution switchboards.
- Intermediate and sub-distribution boards.
- Commercial building electrical systems.
- Industrial power-distribution installations.
- Automation and control panels.
- Three-phase installations requiring four-pole Type 2 surge protection.
- Electrical systems requiring remote monitoring of SPD condition.
