Why Choose the ABB OVR T2 4L 80-275s P QS Surge Protective Device?
The ABB OVR T2 4L 80-275s P QS, order code 2CTB815708R2300, is a high-capacity Type 2 surge protective device (SPD) designed for three-phase plus neutral 230/400 V AC TN-S electrical systems. Its four protected lines provide coordinated surge protection for L1, L2, L3 and N conductors, helping protect distribution equipment and connected loads against transient overvoltages caused by indirect lightning effects and electrical switching events.
Designed for demanding low-voltage installations, the OVR T2 4L 80-275s P QS has a maximum continuous operating voltage Uc of 275 V AC. It provides a nominal discharge current In of 20 kA per protected line and a maximum discharge current Imax of 80 kA using the 8/20 µs waveform, together with an impulse-current capability Iimp of 6.25 kA using the 10/350 µs waveform and a voltage protection level Up of 1.4 kV.
ABB's Safety Reserve technology supports preventive maintenance and increased protection availability, while QuickSafe technology provides dependable thermal disconnection at end of life. The four-pole device uses pluggable protection cartridges with individual mechanical status indication, allowing straightforward inspection and cartridge replacement without replacing the complete SPD assembly.
Key Advantages
- High-capacity Type 2 / Class II surge protection for three-phase plus neutral TN-S systems.
- Four protected lines provide surge protection across L1, L2, L3 and N.
- 80 kA maximum discharge current using the 8/20 µs waveform.
- 20 kA nominal discharge current per protected line.
- 6.25 kA impulse-current capability using the 10/350 µs waveform.
- 1.4 kV voltage protection level helps limit transient stress on downstream equipment.
- Safety Reserve technology supports preventive maintenance and protection continuity.
- ABB QuickSafe technology provides reliable thermal disconnection.
- Pluggable cartridges simplify servicing and replacement.
- Individual mechanical status indicators allow quick visual inspection of each protection module.
- 100 kA rated service short-circuit breaking capacity supports demanding distribution applications.
Key Features
- ABB OVR T2 QuickSafe series.
- Type 2 / Class II surge protective device.
- Four-pole, four-line configuration.
- Designed for TN-S low-voltage distribution systems.
- 230/400 V AC rated system voltage.
- 275 V AC maximum continuous operating voltage Uc.
- 20 kA nominal discharge current In.
- 80 kA maximum discharge current Imax.
- 6.25 kA impulse current Iimp.
- 1.4 kV voltage protection level Up.
- Safety Reserve preventive-maintenance function.
- Varistor-based protection technology.
- Pluggable protection cartridges.
- Mechanical status indication for each arrester module.
- No TS auxiliary remote-signalling contact.
High-Capacity Four-Line Protection for TN-S Networks
Type 2 SPDs are designed to divert transient currents associated with indirect lightning effects and electrical switching before damaging overvoltages reach downstream equipment. The ABB OVR T2 4L 80-275s P QS combines four protected lines with an 80 kA maximum discharge-current rating and 1.4 kV voltage protection level, making it particularly suitable for demanding three-phase plus neutral TN-S distribution systems.
The Safety Reserve design supports preventive maintenance and continued protection availability, while ABB QuickSafe technology provides dependable thermal disconnection. Each protection module is pluggable and incorporates mechanical condition indication, allowing maintenance personnel to identify an affected module and replace its cartridge without unnecessarily replacing the complete four-pole SPD assembly.
Typical Applications
- Three-phase plus neutral 230/400 V AC TN-S installations.
- Main low-voltage distribution switchboards.
- Intermediate and sub-distribution boards.
- Commercial building electrical systems.
- Industrial and manufacturing facilities.
- Process-control and automation installations.
- Protection of sensitive electrical and electronic equipment.
- Installations exposed to significant transient surge currents.
- Applications requiring high-capacity four-line Type 2 surge protection.
- Installations where Safety Reserve preventive-maintenance functionality is beneficial.
