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2CTB803873R3400 ABB OVR T2-T3 3L 20-275 P QS Surge Protective Device
ABB 2CTB803873R3400 OVR T2-T3 3L 20-275 P QS is a three-pole pluggable QuickSafe Type 2 and Type 3 surge protective device for 230/400 V AC TN-C networks with 20 kA maximum discharge current, 5 kA nominal discharge current and 0.85 kV voltage protection level.
£161.14
Why Choose the ABB OVR T2-T3 3L 20-275 P QS Surge Protective Device?
The ABB OVR T2-T3 3L 20-275 P QS 2CTB803873R3400 is a three-pole combined Type 2 and Type 3 surge protective device (SPD) designed for low-voltage three-phase electrical installations. Part of ABB's OVR QuickSafe range, it is intended for TN-C 230/400 V AC networks, helping protect distribution systems and sensitive downstream equipment against transient overvoltages.
The OVR T2-T3 3L 20-275 P QS has a maximum continuous operating voltage Uc of 275 V AC. It provides a maximum discharge current Imax of 20 kA and a nominal discharge current In of 5 kA using an 8/20 µs waveform, together with a low voltage protection level Up of 0.85 kV.
ABB's QuickSafe (QS) design combines pluggable construction with replaceable protection cartridges for straightforward maintenance. Mechanical indicators provide local operating-status information for each arrester, while the compact three-module design occupies just 53.4 mm of DIN-rail width, making it suitable for commercial, industrial and building distribution boards where space-efficient coordinated surge protection is required.
Key Advantages
- Combined Type 2 + Type 3 surge protection for distribution-level and sensitive downstream equipment protection.
- Three-pole configuration specifically suited to compatible TN-C three-phase networks.
- 20 kA maximum discharge current (Imax) for transient surge-current handling.
- Low 0.85 kV voltage protection level Up helps limit transient voltage reaching connected equipment.
- QuickSafe pluggable construction allows individual protection cartridges to be replaced.
- Mechanical status indication provides straightforward local inspection of each arrester.
Key Features
- ABB OVR T2-T3 QuickSafe surge protection range.
- Combined Type 2 + Type 3 / Class II + III SPD.
- Three protected lines.
- TN-C network configuration.
- 230/400 V AC nominal system voltage.
- 275 V AC maximum continuous operating voltage Uc.
- 20 kA maximum discharge current Imax.
- 5 kA nominal discharge current In.
- 0.85 kV voltage protection level Up.
- QuickSafe pluggable cartridges with mechanical operating-status indicators.
Combined Type 2 and Type 3 Protection for TN-C Networks
Combined Type 2 and Type 3 SPDs provide surge-current handling at distribution level together with a low residual voltage suitable for protecting sensitive downstream equipment. Type 2 performance is characterised by safe discharge of surge current using an 8/20 µs waveform, while Type 3 protection is intended to provide enhanced voltage limitation close to sensitive equipment.
The ABB OVR T2-T3 3L 20-275 P QS combines 20 kA Imax, 5 kA In and a low 0.85 kV Up across three protected lines. QuickSafe pluggable construction and mechanical status indication support efficient inspection and cartridge replacement throughout the surge protective device's service life.
Typical Applications
- 230/400 V AC three-phase TN-C electrical systems.
- Main and sub-distribution switchboards.
- Commercial building electrical installations.
- Industrial electrical distribution panels.
- Automation and control-system protection.
- Protection of sensitive electrical and electronic equipment.
- Installations requiring compact combined Type 2 and Type 3 surge protection.
Technical Specifications
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| Remote Signal | No | |
|---|---|---|
| SPD Type | Type 2+3 | |
| Poles | 3-pole | |
| Earthing System | TN-C | |
| Device Type | Surge protection device | |
| Series | OVR T2-T3 QuickSafe | |
| Order code | 2CTB803873R3400 | |
| EAN / GTIN | 3660308519818 | |
| Product group | Surge Protection Devices | |
| Product type | Combined Type 2 + Type 3 surge protective device | |
| SPD classification | Type 2 + Type 3 / Class II + III | |
| Network configuration | TN-C | |
| Protected lines | 3 | |
| Nominal system voltage | 230/400 V AC | |
| Maximum continuous operating voltage Uc | 275 V AC | |
| Maximum discharge current Imax (8/20 µs) | 20 kA | |
| Nominal discharge current In (8/20 µs) | 5 kA | |
| Voltage protection level Up | 0.85 kV | |
| Construction | Pluggable | |
| Technology | QuickSafe (QS) | |
| Status indication | Mechanical indicator for each arrester | |
| Replacement cartridge | OVR T2-T3 20-275 C QS, 2CTB803876R1200 | |
| Degree of protection | IP20 | |
| Operating temperature | −40 to +80 °C | |
| Mounting | DIN rail | |
| Width | 53.4 mm | |
| Height | 95.8 mm | |
| Depth | 65.3 mm | |
| Product weight | 0.36 kg | |
| Standards | IEC 61643-11 / EN 61643-11 |
Frequently Asked Questions
What is the ABB OVR T2-T3 3L 20-275 P QS?
The ABB 2CTB803873R3400 is a three-pole combined Type 2 and Type 3 surge protective device with QuickSafe pluggable construction, designed for compatible 230/400 V AC TN-C three-phase networks.
What are the discharge current ratings of the OVR T2-T3 3L 20-275 P QS?
The device has a maximum discharge current Imax of 20 kA and a nominal discharge current In of 5 kA, based on an 8/20 µs surge-current waveform.
What is the voltage protection level of 2CTB803873R3400?
The ABB 2CTB803873R3400 has a voltage protection level Up of 0.85 kV, providing low residual voltage for enhanced protection of downstream equipment.
Can the cartridges in the ABB OVR T2-T3 3L 20-275 P QS be replaced?
Yes. The QuickSafe design is pluggable and uses the ABB OVR T2-T3 20-275 C QS replacement cartridge, order code 2CTB803876R1200.
Which electrical network is the OVR T2-T3 3L 20-275 P QS designed for?
The device is designed for compatible 230/400 V AC three-phase TN-C networks and provides surge protection across three lines.
Trusted QuickSafe Surge Protection from ABB
ABB OVR QuickSafe surge protective devices provide electrical designers, installers and maintenance professionals with coordinated transient-overvoltage protection, combining compact DIN-rail construction, replaceable cartridges and clear mechanical status indication for efficient three-phase electrical installations.
