Why Choose the ABB OVR T1-T2 1N 12.5-275s P TS QS Surge Protective Device?
The ABB OVR T1-T2 1N 12.5-275s P TS QS, order code 2CTB815710R0100, is a combined Type 1 and Type 2 surge protective device (SPD) designed to protect low-voltage electrical installations against lightning currents and transient overvoltages. As part of the ABB OVR QuickSafe surge protection range, it combines lightning-current protection and downstream surge protection in a compact DIN-rail-mounted assembly.
The 1N configuration provides protection for a single-phase line and neutral arrangement, making the device suitable for appropriate single-phase distribution systems. Its pluggable construction simplifies maintenance, while the TS remote signalling contact enables the operating condition of the SPD to be monitored remotely. Mechanical status indication also provides convenient visual inspection at the distribution board.
With a maximum continuous operating voltage (Uc) of 275 V AC and an impulse discharge current (Iimp) of 12.5 kA per pole using a 10/350 µs waveform, the OVR T1-T2 1N 12.5-275s P TS QS is designed to handle substantial lightning-related surge energy. Its combined Type 1+2 classification allows a single device to provide coordinated protection against both direct lightning-current effects entering the installation and lower-energy transient overvoltages.
Key Advantages
- Combined Type 1 and Type 2 surge protection in a single compact device.
- 12.5 kA impulse discharge current (Iimp) per pole for 10/350 µs lightning-current impulses.
- 275 V AC maximum continuous operating voltage (Uc) for low-voltage AC systems.
- 1N configuration provides coordinated line and neutral surge protection.
- Suitable for installation at the origin of appropriate low-voltage electrical installations.
- TS remote signalling contact supports remote condition monitoring.
- Pluggable protection modules simplify servicing and replacement.
- Mechanical status indication allows straightforward local inspection.
- ABB QuickSafe technology supports reliable surge protection and safe end-of-life disconnection.
Key Features
- ABB OVR T1-T2 QuickSafe surge protective device series.
- Combined Type 1 + Type 2 SPD.
- 1N configuration for single-phase plus neutral applications.
- Impulse discharge current (Iimp): 12.5 kA per pole.
- 10/350 µs lightning-current waveform capability.
- Maximum continuous operating voltage (Uc): 275 V AC.
- Designed for low-voltage AC electrical distribution systems.
- Pluggable protection modules for straightforward maintenance.
- Integrated mechanical operating-status indication.
- TS remote signalling contact for external status monitoring.
- DIN-rail mounting for installation in distribution boards.
- QuickSafe design for dependable operation and end-of-life management.
Combined Lightning and Surge Protection for Electrical Installations
Type 1 surge protective devices are designed to discharge high-energy lightning currents that can enter an electrical installation, while Type 2 protection limits transient overvoltages caused by indirect lightning effects and switching operations. By combining both functions, the ABB OVR T1-T2 1N 12.5-275s P TS QS provides coordinated protection within a single DIN-rail-mounted assembly.
The device is particularly useful where lightning-current protection is required at or near the origin of a low-voltage installation. Its pluggable QuickSafe construction simplifies maintenance, while local mechanical indication and the TS remote signalling contact allow the condition of the protection system to be monitored as part of routine electrical maintenance.
Typical Applications
- Single-phase low-voltage electrical distribution systems.
- Main distribution boards requiring Type 1 and Type 2 protection.
- Buildings equipped with external lightning protection systems.
- Commercial and industrial electrical installations.
- Building services and infrastructure distribution boards.
- Installations exposed to lightning-induced transient overvoltages.
- Electrical systems requiring remote SPD condition monitoring.
