Why Choose the ABB OVR T1-T2 3L 12.5-440s P TS QS Surge Protective Device?
The ABB OVR T1-T2 3L 12.5-440s P TS QS, order code 2CTB815710R3500, is a combined Type 1 and Type 2 surge protective device (SPD) designed to protect three-phase low-voltage electrical installations against lightning currents and transient overvoltages. Part of the ABB OVR QuickSafe surge protection range, it combines lightning-current protection and Type 2 surge protection in a compact three-pole assembly for industrial, commercial and infrastructure electrical distribution systems.
The 3L configuration protects all three phase conductors and is intended for appropriate three-phase electrical networks. Its pluggable construction enables individual protection cartridges to be replaced when required, while integrated mechanical status indication provides straightforward local condition checking. The TS remote signalling contact also allows the SPD's operating status to be monitored from an external control, alarm or building-management system.
With a maximum continuous operating voltage (Uc) of 440 V AC and an impulse current (Iimp) of 12.5 kA for the 10/350 µs lightning-current waveform, the OVR T1-T2 3L 12.5-440s P TS QS provides robust protection for higher-voltage three-phase systems. Its combined Type 1+2 performance allows a single coordinated device to handle lightning-current impulses as well as lower-energy transient overvoltages caused by indirect lightning and electrical switching.
Key Advantages
- Combined Type 1 and Type 2 surge protection in a single coordinated device.
- 12.5 kA impulse current (Iimp) capability for 10/350 µs lightning-current impulses.
- 440 V AC maximum continuous operating voltage (Uc) for suitable three-phase networks.
- Three-pole (3L) configuration protects all three phase conductors.
- Provides protection against both lightning-current impulses and transient switching overvoltages.
- TS remote signalling contact supports external condition monitoring.
- Pluggable protection modules simplify servicing and replacement.
- Mechanical status indication provides convenient local inspection.
- ABB QuickSafe technology supports dependable protection and end-of-life management.
Key Features
- ABB OVR T1-T2 QuickSafe surge protective device series.
- Combined Type 1 + Type 2 SPD.
- Three-pole (3L) configuration.
- Maximum continuous operating voltage (Uc): 440 V AC.
- Impulse current (Iimp, 10/350 µs): 12.5 kA.
- Designed for three-phase low-voltage AC electrical distribution systems.
- Pluggable, replaceable protection cartridges.
- Integrated mechanical operating-status indication.
- TS remote signalling contact for external monitoring.
- QuickSafe technology for reliable end-of-life disconnection.
- DIN-rail mounting for electrical distribution boards.
- Designed for coordinated lightning and transient overvoltage protection.
Combined Lightning and Surge Protection for Three-Phase Systems
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 associated with indirect lightning effects and electrical switching operations. The ABB OVR T1-T2 3L 12.5-440s P TS QS combines these functions to provide coordinated protection for three-phase low-voltage distribution systems.
The OVR QuickSafe design also supports straightforward maintenance throughout the installation's service life. Pluggable protection cartridges can be replaced when necessary, mechanical indicators allow local inspection, and the TS remote signalling contact enables the SPD condition to be integrated into remote alarm or monitoring systems.
Typical Applications
- Three-phase low-voltage electrical distribution systems.
- Main distribution boards requiring combined Type 1 and Type 2 protection.
- Industrial control and power distribution panels.
- Commercial and industrial buildings.
- Buildings equipped with external lightning protection systems.
- Manufacturing and production facilities.
- Electrical installations requiring remote SPD condition monitoring.
