Why Choose the ABB OVR T2 1N 80-275s P QS Surge Protective Device?
The ABB OVR T2 1N 80-275s P QS is a two-pole Type 2 surge protective device (SPD) designed to protect single-phase plus neutral low-voltage electrical installations against transient overvoltages caused by indirect lightning effects and switching events. Identified by ABB order code 2CTB815708R1400, it is intended for 230 V AC TT and TN-S systems and provides L-N, L-PE and N-PE protection.
Designed for installations requiring high surge-current capability, the OVR T2 1N 80-275s P QS provides a 20 kA nominal discharge current (In) and an 80 kA maximum discharge current (Imax) using an 8/20 µs waveform. It also has a 6.25 kA impulse-current capability (Iimp) using a 10/350 µs waveform and a 1.4 kV voltage protection level (Up).
The device combines ABB's patented QuickSafe technology with its Safety Reserve system. Integrated thermal disconnection and end-of-life indication support safe maintenance, while the pluggable design allows protection cartridges to be replaced without changing the complete DIN rail base. This P QS version provides local status indication without a remote auxiliary signalling contact.
Key Advantages
- Type 2 / Class II surge protection for single-phase plus neutral installations.
- High 80 kA maximum discharge current (Imax) using an 8/20 µs waveform.
- 20 kA nominal discharge current (In) for Type 2 surge protection.
- 6.25 kA impulse current (Iimp) using a 10/350 µs waveform.
- 1.4 kV voltage protection level (Up) helps limit transient voltage stress on downstream equipment.
- ABB Safety Reserve functionality provides continued basic protection after the primary protection stage reaches end of life.
- Patented QuickSafe technology with integrated thermal disconnection.
- Pluggable construction simplifies cartridge replacement and routine maintenance.
Key Features
- ABB OVR T2 surge protection range.
- Type 2 / Class II surge protective device.
- 1N / 1+N configuration.
- Two protected lines.
- Protection modes: L-N / L-PE / N-PE.
- Designed for TT and TN-S networks.
- 230 V AC nominal voltage.
- 275 V AC maximum continuous operating voltage (Uc).
- 20 kA nominal discharge current (In, 8/20 µs).
- 80 kA maximum discharge current (Imax, 8/20 µs).
- 6.25 kA impulse current (Iimp, 10/350 µs).
- 1.4 kV voltage protection level (Up).
- 100 kA short-circuit current rating (Isccr).
- Integrated thermal disconnector and end-of-life indicator.
- QuickSafe and Safety Reserve technologies.
- Pluggable construction for 35 mm DIN rail mounting.
High-Capacity Type 2 Protection with Safety Reserve Technology
Type 2 SPDs are designed to discharge currents generated by indirect lightning strikes and switching transients before damaging overvoltages propagate through the electrical installation. The ABB OVR T2 1N 80-275s P QS combines a 20 kA nominal discharge current with an 80 kA maximum discharge-current capability and 1.4 kV protection level, providing high-capacity transient protection for compatible single-phase plus neutral distribution systems.
ABB's patented Safety Reserve system adds a secondary protection stage so that the SPD does not become completely disconnected when its primary protection element reaches the end of its service life. Combined with QuickSafe technology, integrated thermal disconnection, local end-of-life indication and replaceable cartridges, this allows maintenance to be planned while maintaining a basic level of surge protection.
Typical Applications
- 230 V AC single-phase plus neutral electrical installations.
- TT and TN-S low-voltage distribution systems.
- Main electrical distribution switchboards.
- Intermediate and sub-distribution boards.
- Commercial building electrical systems.
- Industrial low-voltage power distribution.
- Control and automation panels requiring high-capacity Type 2 surge protection.
- Installations where Safety Reserve functionality supports planned SPD maintenance.
