Why Choose the ABB OVR T2 40-440s P TS QS Surge Protective Device?
The ABB OVR T2 40-440s P TS QS, order code 2CTB815704R2900, is a compact Type 2 surge protective device (SPD) designed to protect low-voltage electrical installations against transient overvoltages caused by indirect lightning effects and switching events. Its single-pole design is suitable for coordinated protection in TT, TN-C, TN-S and IT distribution systems.
Designed for 400 V AC applications and 400/690 V AC systems, the OVR T2 40-440s P TS QS has a maximum continuous operating voltage Uc of 440 V AC. It provides a nominal discharge current In of 20 kA and a maximum discharge current Imax of 40 kA using the 8/20 µs waveform, together with a voltage protection level Up of 1.8 kV.
The device combines ABB QuickSafe technology with a Safety Reserve preventive-maintenance function, pluggable construction and visual status indication. The TS remote-signalling contacts provide one normally open and one normally closed auxiliary contact for remote condition monitoring, while the compact 17.8 mm DIN-rail width makes the SPD easy to integrate into space-conscious switchboards.
Key Advantages
- Reliable Type 2 / Class II surge protection against indirect lightning and switching transients.
- 40 kA maximum discharge current using the 8/20 µs waveform.
- 20 kA nominal discharge current for effective transient surge suppression.
- 440 V AC maximum continuous operating voltage for higher-voltage AC networks.
- 1.8 kV voltage protection level helps limit transient stress on downstream equipment.
- Safety Reserve functionality provides preventive-maintenance indication and increased protection availability.
- ABB QuickSafe technology provides rapid and dependable end-of-life disconnection.
- TS remote signalling enables integration with monitoring and alarm systems.
- Pluggable cartridge construction simplifies servicing and replacement.
- 100 kA short-circuit withstand capability supports demanding installations.
Key Features
- ABB OVR T2 QuickSafe series.
- Type 2 / Class II surge protective device.
- Single-pole, single protected-line configuration.
- Suitable for TT, TN-C, TN-S and IT systems.
- 400 V AC rated voltage.
- 400/690 V AC nominal system voltage.
- 440 V AC maximum continuous operating voltage Uc.
- 2 kA impulse current Iimp using a 10/350 µs waveform.
- 20 kA nominal discharge current In.
- 40 kA maximum discharge current Imax.
- 1.8 kV voltage protection level Up.
- Safety Reserve preventive-maintenance function.
- Pluggable protection cartridge with visual status indication.
- 1 NO + 1 NC auxiliary contacts for remote signalling.
Safety Reserve Type 2 Protection for Higher-Voltage AC Networks
Type 2 SPDs are designed to discharge transient currents associated with indirect lightning events and switching operations before damaging overvoltages reach connected equipment. The ABB OVR T2 40-440s P TS QS combines a 20 kA nominal discharge current, 40 kA maximum discharge current and 1.8 kV protection level with a 440 V AC continuous operating rating for higher-voltage distribution applications.
The Safety Reserve feature supports preventive maintenance and increased surge-protection availability, while the pluggable cartridge allows the protection module to be replaced without changing the complete base assembly. Visual indication provides local status information, and the TS auxiliary contacts allow the SPD condition to be incorporated into remote monitoring, alarm or building-management systems.
Typical Applications
- 400/690 V AC low-voltage distribution systems.
- Industrial main and sub-distribution boards.
- Commercial building switchboards.
- TN-C and TN-S electrical networks.
- TT distribution systems using the appropriate protection arrangement.
- IT electrical distribution systems.
- Industrial automation and control panels.
- Protection of sensitive electrical and electronic equipment.
- Installations requiring preventive SPD maintenance indication.
- Systems requiring remote surge-protection status monitoring.
