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2CTB815704R0800 ABB OVR T2 3N 40-275s P TS QS Surge Protective Device
ABB OVR T2 3N 40-275s P TS QS four-pole Type 2 pluggable surge protective device for 230/400 V AC TT, TN-S and TN-C-S systems, with 20 kA nominal discharge current, 40 kA maximum discharge current, Safety Reserve technology and remote signalling.
£184.49
Why Choose the ABB OVR T2 3N 40-275s P TS QS Surge Protective Device?
The ABB OVR T2 3N 40-275s P TS QS is a four-pole Type 2 surge protective device (SPD) designed to protect three-phase plus neutral low-voltage installations against transient overvoltages caused by indirect lightning effects and electrical switching events. Identified by ABB order code 2CTB815704R0800, it is suitable for 230/400 V AC TT, TN-S and TN-C-S distribution systems.
The device combines ABB's patented QuickSafe technology with its Safety Reserve system. Rather than completely disconnecting protection when the main varistor reaches the end of its service life, the Safety Reserve design retains a secondary level of surge protection, giving maintenance teams additional time to arrange replacement while maintaining basic protection for the installation.
The OVR T2 3N 40-275s P TS QS provides a 20 kA nominal discharge current (In) and 40 kA maximum discharge current (Imax) using an 8/20 µs waveform, with a 275 V AC maximum continuous operating voltage (Uc). Pluggable cartridges, optical condition indication and an integrated TS remote signalling contact make it particularly well suited to distribution boards where straightforward inspection and planned maintenance are important.
Key Advantages
- Type 2 surge protection for three-phase plus neutral low-voltage installations.
- 20 kA nominal discharge current (In) using an 8/20 µs waveform.
- 40 kA maximum discharge current (Imax) using an 8/20 µs waveform.
- 275 V AC maximum continuous operating voltage (Uc).
- ABB Safety Reserve system maintains basic surge protection after the primary protection stage reaches end of life.
- Patented QuickSafe technology provides integrated thermal disconnection.
- TS remote signalling contact enables external monitoring of SPD condition.
- Pluggable protection cartridges simplify servicing and replacement.
Key Features
- ABB OVR T2 surge protection range.
- Type 2 / Class II surge protective device.
- 3N / three-phase plus neutral configuration.
- Four protected lines.
- Suitable for TT, TN-S and TN-C-S networks.
- 275 V AC maximum continuous operating voltage.
- 20 kA nominal discharge current (In, 8/20 µs).
- 40 kA maximum discharge current (Imax, 8/20 µs).
- 1.4 kV voltage protection level (Up).
- 100 kA short-circuit current rating.
- <25 ns response time.
- Integrated thermal disconnector and Safety Reserve functionality.
- Optical status indication and TS remote signalling.
- Pluggable cartridges for straightforward maintenance.
- 35 mm DIN rail mounting and compatibility with ABB System pro M compact installations.
Reliable Type 2 Protection with ABB Safety Reserve Technology
Type 2 SPDs are designed to discharge transient currents generated by indirect lightning strikes and switching events, with performance characterised using the 8/20 µs surge-current waveform. The ABB OVR T2 3N 40-275s P TS QS provides a 20 kA nominal discharge current, 40 kA maximum discharge current and a low 1.4 kV protection level, helping limit the transient voltage presented to downstream electrical equipment.
ABB's Safety Reserve system adds an important maintenance advantage. When the main varistor protection stage reaches the end of its service life, a reserve protection stage continues to provide basic protection until the cartridge can be replaced. Combined with QuickSafe thermal disconnection, optical indication, remote signalling and pluggable cartridges, this supports planned maintenance while reducing the period for which an installation may otherwise be left without surge protection.
Typical Applications
- 230/400 V AC three-phase plus neutral distribution systems.
- TT, TN-S and TN-C-S electrical networks.
- Main low-voltage distribution switchboards.
- Sub-distribution boards.
- Commercial building electrical installations.
- Industrial power-distribution systems.
- Automation and control panels requiring transient overvoltage protection.
- Installations requiring remote monitoring of SPD condition.
Technical Specifications
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| Remote Signal | Yes | |
|---|---|---|
| Device Type | Surge protection device | |
| SPD Type | Type 2 | |
| Poles | 3-pole + N | |
| Earthing System | TN-S, TT | |
| Series | OVR T2 | |
| ABB order code | 2CTB815704R0800 | |
| Product group | Surge Protection Devices | |
| Product type | Surge protective device | |
| SPD classification | Type 2 / Class II | |
| Configuration | 3N / three-phase plus neutral | |
| Number of protected lines | 4 | |
| Number of poles | 4 | |
| Distribution systems | TT / TN-S / TN-C-S | |
| Nominal system voltage | 230/400 V AC | |
| Maximum continuous operating voltage (Uc) | 275 V AC | |
| Frequency | 47–63 Hz | |
| Nominal discharge current (In, 8/20 µs) | 20 kA | |
| Maximum discharge current (Imax, 8/20 µs) | 40 kA | |
| Voltage protection level (Up) | 1.4 kV | |
| Short-circuit current rating | 100 kA | |
| Safety Reserve | Yes | |
| Integrated thermal disconnector | Yes | |
| Technology | ABB QuickSafe | |
| Remote signalling | Yes, TS contact | |
| Status indication | Optical | |
| Response time | <25 ns | |
| Maximum backup fuse | 160 A | |
| Maximum backup MCB | 125 A, curve B or C | |
| Protection rating | IP20 | |
| Maximum solid conductor cross-section | 35 mm² | |
| Maximum stranded conductor cross-section | 25 mm² | |
| Stripping length | 12.5 mm | |
| Maximum operating altitude | 2000 m | |
| Mounting | 35 mm DIN rail | |
| Construction | Pluggable, 4 modular spaces | |
| Dimensions (H × W × D) | 95 × 71.2 × 69.4 mm | |
| Weight | 600 g | |
| Fire resistance | UL 94 V-0 | |
| Standards | IEC 61643-11 / EN 61643-11 | |
| Phase replacement cartridge | OVR T2 40-275s C QS | |
| Phase replacement cartridge order code | 2CTB815704R2600 | |
| Neutral replacement cartridge | OVR T2 N 80-275s C QS | |
| Neutral replacement cartridge order code | 2CTB815708R2800 | |
| EAN | 3660308525260 |
Frequently Asked Questions
What is the ABB OVR T2 3N 40-275s P TS QS used for?
It is a Type 2 surge protective device designed to protect three-phase plus neutral low-voltage installations against transient overvoltages caused by indirect lightning effects and electrical switching events.
What are the discharge-current ratings of this SPD?
The OVR T2 3N 40-275s P TS QS provides a nominal discharge current (In) of 20 kA and a maximum discharge current (Imax) of 40 kA, measured using an 8/20 µs waveform.
What does the “s” mean in OVR T2 3N 40-275s P TS QS?
The “s” identifies ABB's Safety Reserve version. This design incorporates an additional protection stage so that basic surge protection remains available after the primary varistor reaches its end-of-life condition, providing time for planned cartridge replacement.
What does TS mean on the OVR T2 3N 40-275s P TS QS?
The TS designation indicates remote signalling. The device includes an auxiliary signalling contact that allows its protection condition to be monitored by an external control, alarm or building-management system.
Can the protection cartridges be replaced?
Yes. The SPD has a pluggable construction. Compatible replacement modules include the ABB OVR T2 40-275s C QS phase cartridge, order code 2CTB815704R2600, and OVR T2 N 80-275s C QS neutral cartridge, order code 2CTB815708R2800.
Trusted Surge Protection from ABB
ABB OVR Type 2 surge protective devices combine transient overvoltage protection with QuickSafe technology, pluggable modules and Safety Reserve functionality to support dependable protection and planned maintenance in low-voltage distribution systems.
