Why Choose the ABB OVR T1-T2 12.5-275s P QS Surge Protective Device?
The ABB OVR T1-T2 12.5-275s P 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 in a compact single-pole device.
Designed for use in suitable TT, TN-S and TN-C distribution systems, the OVR T1-T2 12.5-275s P QS uses spark-gap and varistor technology with a replaceable protection module and ABB QuickSafe end-of-life indication. Its safety reserve and pluggable construction help simplify maintenance while providing dependable protection for industrial, commercial and building electrical installations.
With an impulse current (Iimp) of 12.5 kA using a 10/350 µs waveform, maximum discharge current (Imax) of 80 kA using an 8/20 µs waveform and 275 V AC maximum continuous operating voltage, the OVR T1-T2 12.5-275s P QS provides robust protection for 230 V AC systems. The device is supplied under ABB order code 2CTB815710R1200.
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).
- 30 kA nominal discharge current In (8/20 µs).
- 275 V AC maximum continuous operating voltage.
- 1.1 kV voltage protection level (Up).
- ABB QuickSafe end-of-life indication and safety reserve.
- Replaceable protection module simplifies servicing and maintenance.
- 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 L1 configuration.
- 12.5 kA Iimp lightning impulse current capability.
- 80 kA Imax maximum discharge current.
- 30 kA In nominal discharge current.
- 230 V AC nominal voltage.
- 275 V AC maximum continuous operating voltage (Uc).
- 1.1 kV voltage protection level (Up).
- Spark-gap and varistor surge protection technology.
- Replaceable protection module with QuickSafe end-of-life indication.
- DIN-rail mounting for straightforward integration into distribution boards.
Combined Lightning and Surge Protection for Electrical Installations
Combined Type 1+2 surge protective devices provide protection against both high-energy lightning currents and transient overvoltages. Type 1 capability enables the SPD to discharge lightning impulse currents characterised by a 10/350 µs waveform, while Type 2 performance handles surge currents 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 QS combines high discharge capability, replaceable protection technology, a safety reserve and QuickSafe end-of-life indication in a compact DIN-rail device suitable for use in appropriate TT, TN-S and TN-C systems.
Typical Applications
- Main low-voltage electrical distribution boards.
- 230 V AC electrical distribution systems.
- TT, TN-S and TN-C electrical installations.
- Industrial electrical installations.
- Commercial buildings and facilities.
- Installations requiring combined lightning current and surge protection.
- Machine and automation electrical panels.
- Protection of sensitive electrical and electronic equipment.
