Why Choose the ABB OVR T1-T2 12.5-275s P TS QS Surge Protective Device?
The ABB OVR T1-T2 12.5-275s P TS QS is a high-performance combined Type 1+2 surge protective device (SPD) designed to protect low-voltage electrical installations against lightning currents and transient overvoltages. As part of the advanced ABB OVR QuickSafe surge protection range, it combines Type 1 lightning current protection and Type 2 surge protection within a compact single-pole device for industrial and commercial electrical installations.
Designed for TT, TN-C and TN-S distribution systems, the OVR T1-T2 12.5-275s P TS QS provides coordinated protection against direct lightning effects, induced surges and switching overvoltages. Its pluggable construction simplifies maintenance, while the integrated status indication and auxiliary signalling contact enable convenient monitoring of the SPD's operating condition.
With an impulse current (Iimp) of 12.5 kA using a 10/350 µs waveform, maximum discharge current (Imax) of 80 kA, nominal discharge current (In) of 20 kA and 275 V AC maximum continuous operating voltage, the OVR T1-T2 12.5-275s P TS QS provides robust protection for 230 / 400 V AC installations. The device is supplied under ABB order code 2CTB815710R0000.
Key Advantages
- Combined Type 1+2 surge protective device for lightning current and transient overvoltage protection.
- 12.5 kA impulse current Iimp (10/350 µs).
- 80 kA maximum discharge current Imax (8/20 µs).
- 20 kA nominal discharge current In (8/20 µs).
- 275 V AC maximum continuous operating voltage.
- Suitable for TT, TN-C and TN-S distribution systems.
- Integrated status indication and auxiliary signalling contact for remote monitoring.
- Pluggable construction simplifies inspection, maintenance and replacement.
- Compact single-module DIN-rail design for electrical distribution boards.
Key Features
- ABB OVR T1-T2 QuickSafe surge protection series.
- Combined Type 1+2 surge protective device.
- Single-pole, single protected-line configuration.
- 12.5 kA Iimp lightning impulse current capability.
- 80 kA Imax maximum discharge current.
- 20 kA In nominal discharge current.
- 275 V AC maximum continuous operating voltage (Uc).
- 1.4 kV voltage protection level (Up) at nominal discharge current.
- 100 kA short-circuit withstand capability.
- Integrated preventive maintenance function and status indicator.
- 1 NO and 1 NC auxiliary contact for remote status signalling.
- Pluggable construction and DIN-rail mounting for straightforward servicing and installation.
Combined Lightning and Surge Protection for Electrical Installations
Combined Type 1+2 surge protective devices provide protection against both high-energy lightning currents and lower-energy transient overvoltages. Type 1 capability allows the SPD to discharge lightning impulse currents with a 10/350 µs waveform, while Type 2 performance limits transient surges characterised by an 8/20 µs waveform, helping protect downstream electrical and electronic equipment.
The ABB OVR T1-T2 QuickSafe range is designed for coordinated protection of low-voltage installations. The OVR T1-T2 12.5-275s P TS QS combines high discharge capability, pluggable construction, visual status indication and auxiliary remote signalling in a compact DIN-rail device suitable for TT, TN-C and TN-S distribution systems.
Typical Applications
- Main low-voltage electrical distribution boards.
- TT, TN-C and TN-S electrical distribution systems.
- Industrial electrical installations.
- Commercial buildings and facilities.
- Installations requiring combined lightning current and surge protection.
- Machine and automation electrical distribution panels.
- Building services and infrastructure installations.
- Protection of sensitive electrical and electronic equipment.
