Why Choose the ABB OVR T1-T2 3N 12.5-440s P TS QS Surge Protective Device?
The ABB OVR T1-T2 3N 12.5-440s P TS QS is a high-performance combined Type 1 + Type 2 surge protective device (SPD) designed to protect three-phase low-voltage electrical installations against lightning currents and transient overvoltages. Identified by ABB order code 2CTB815710R3600, it forms part of the ABB OVR QuickSafe range and is compatible with ABB System pro M compact distribution equipment.
Designed in a 3+1 configuration for TN-S and TT systems, this four-pole SPD provides an impulse current rating of 12.5 kA per pole using a 10/350 µs waveform and an 80 kA maximum discharge current. Its 440 V AC maximum continuous operating voltage makes it suitable for higher-voltage three-phase networks with a nominal system voltage of 400/690 V AC.
ABB QuickSafe technology incorporates a reserve varistor that helps maintain basic surge protection when the primary protection element reaches the end of its service life. The pluggable design simplifies cartridge replacement, while the TS auxiliary contact provides potential-free remote status signalling for integration with building-management and industrial monitoring systems.
Key Advantages
- Combined Type 1 + Type 2 lightning and surge protection in one device.
- 3+1 configuration for three-phase TN-S and TT distribution systems.
- 12.5 kA impulse current (Iimp, 10/350 µs) per pole for Type 1 lightning-current protection.
- 80 kA maximum discharge current (Imax) for high-energy transient protection.
- 440 V AC maximum continuous operating voltage for higher-voltage applications.
- Suitable for nominal systems up to 400/690 V AC.
- ABB QuickSafe reserve-varistor technology helps maintain basic protection at end of life.
- TS remote signalling enables remote monitoring of SPD operating status.
- Pluggable protection cartridges simplify maintenance and replacement.
- DIN-rail format integrates with ABB System pro M compact installations.
Key Features
- ABB OVR QuickSafe series.
- Type 1 + Type 2 / Class I + II surge protection.
- Four poles with 3+1 protection configuration.
- Designed for TN-S and TT low-voltage distribution systems.
- 12.5 kA impulse current (Iimp, 10/350 µs) per pole.
- 80 kA maximum discharge current (Imax, 8/20 µs).
- 400/690 V AC nominal system voltage.
- 440 V AC maximum continuous operating voltage.
- 1.8 kV voltage protection level.
- Reserve-varistor Safety Reserve functionality.
- Mechanical operating-status indication.
- Potential-free changeover contact for remote signalling.
- Pluggable protection modules.
- 35 mm DIN-rail mounting.
- IP20 degree of protection.
Combined Lightning and Surge Protection for Higher-Voltage Networks
Combined Type 1 + Type 2 SPDs are designed to manage both direct or partial lightning currents and transient overvoltages within a coordinated protection device. The ABB OVR T1-T2 3N 12.5-440s P TS QS provides Type 1 protection against lightning-current impulses characterised by a 10/350 µs waveform, while its Type 2 capability protects against transient surge currents associated with switching events and indirect lightning effects.
The device's 3+1 architecture is designed for TN-S and TT networks, while the reserve-varistor design provides additional protection availability by retaining basic surge protection after the primary protection stage reaches end of life. Pluggable cartridges simplify servicing, and the TS potential-free auxiliary contact enables remote monitoring of SPD condition.
Typical Applications
- Main electrical distribution switchboards.
- Three-phase TN-S and TT electrical distribution systems.
- 400/690 V AC industrial power networks.
- Buildings equipped with external lightning protection systems.
- Industrial manufacturing and process-control facilities.
- Industrial automation and machinery installations.
- Commercial buildings and infrastructure systems.
- Protection of sensitive electrical and electronic equipment.
- Installations requiring remote surge-protection status monitoring.
