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2CTB815704R2300 ABB OVR T2 4L 40-275s P QS Surge Protective Device
ABB OVR T2 4L 40-275s P QS four-pole Type 2 pluggable surge protective device for 230/400 V AC TN-S systems, with 20 kA nominal discharge current, 40 kA maximum discharge current, QuickSafe technology and Safety Reserve functionality.
£280.28
Why Choose the ABB OVR T2 4L 40-275s P QS Surge Protective Device?
The ABB OVR T2 4L 40-275s P QS is a four-pole Type 2 surge protective device (SPD) designed to protect three-phase low-voltage distribution systems against transient overvoltages caused by indirect lightning effects and electrical switching events. Identified by ABB order code 2CTB815704R2300, it is designed for 230/400 V AC TN-S networks and provides protection across four lines.
This model combines varistor technology with ABB's patented QuickSafe technology and Safety Reserve system. The Safety Reserve function provides an additional protection stage when the primary protection stage reaches its end-of-life condition, allowing maintenance to be planned while reserve surge protection remains available.
The OVR T2 4L 40-275s P QS provides a 20 kA nominal discharge current (In) and 40 kA maximum discharge current (Imax) using an 8/20 µs waveform, together with a 275 V AC maximum continuous operating voltage (Uc) and 1.5 kV voltage protection level (Up). Pluggable cartridges and visual condition indication make the device straightforward to inspect and maintain.
Key Advantages
- Type 2 / Class II surge protection for three-phase TN-S electrical distribution systems.
- 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 provides a secondary level of protection to support planned maintenance.
- Patented QuickSafe technology incorporates integrated thermal disconnection.
- Pluggable protection cartridges simplify replacement and servicing.
- Visual status indication provides straightforward local inspection of protection condition.
Key Features
- ABB OVR T2 surge protection range.
- Type 2 / Class II surge protective device.
- Four protected lines / four poles.
- Designed for TN-S networks.
- 230/400 V AC nominal system voltage.
- 275 V AC maximum continuous operating voltage (Uc).
- 20 kA nominal discharge current (In, 8/20 µs).
- 40 kA maximum discharge current (Imax, 8/20 µs).
- 2 kA impulse current (Iimp, 10/350 µs).
- 1.5 kV voltage protection level (Up).
- ≤25 ns response time.
- 100 kA short-circuit withstand capability.
- ABB QuickSafe and Safety Reserve technologies.
- Integrated thermal disconnector and visual status indicator.
- Pluggable four-module construction for DIN rail installation.
Reliable Type 2 Protection with QuickSafe and Safety Reserve Technology
Type 2 surge protective devices are designed to discharge transient currents produced by indirect lightning strikes and electrical switching events. The ABB OVR T2 4L 40-275s P QS provides a 20 kA nominal discharge current and 40 kA maximum discharge current using the standard 8/20 µs waveform, while its 1.5 kV protection level helps limit transient voltage reaching downstream equipment.
ABB's Safety Reserve system provides an additional protection stage when the primary stage reaches its end-of-life condition, helping maintenance personnel plan cartridge replacement without immediately losing all surge protection. QuickSafe thermal disconnection, pluggable cartridges and visual status indication further support safe, efficient inspection and maintenance of the installed SPD.
Typical Applications
- 230/400 V AC TN-S electrical networks.
- Main low-voltage distribution switchboards.
- Intermediate and sub-distribution boards.
- Commercial building electrical installations.
- Industrial power-distribution systems.
- Automation and control panels.
- Three-phase installations requiring four-line Type 2 surge protection.
- Installations where Safety Reserve functionality supports planned SPD maintenance.
Technical Specifications
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| Remote Signal | No | |
|---|---|---|
| Device Type | Surge protection device | |
| SPD Type | Type 2 | |
| Poles | 4-pole | |
| Earthing System | TN-S | |
| Impulse Current Iimp (kA) | 2 kA | |
| Series | OVR T2 | |
| ABB order code | 2CTB815704R2300 | |
| Product group | Surge Protection Devices | |
| Product type | Surge protective device | |
| SPD classification | Type 2 / Class II | |
| Technology | Varistor / ABB QuickSafe | |
| Safety Reserve | Yes | |
| Number of protected lines | 4 | |
| Number of poles | 4 | |
| Low-voltage distribution system | TN-S | |
| Nominal system voltage | 230/400 V AC | |
| Maximum continuous operating voltage (Uc) | 275 V AC | |
| Nominal DC voltage (L-PE / L-L) | 320 / 640 V DC | |
| Maximum continuous DC voltage (L-PE / L-L) | 355 / 710 V DC | |
| Nominal discharge current (In, 8/20 µs) | 20 kA | |
| Maximum discharge current (Imax, 8/20 µs) | 40 kA | |
| Impulse current (Iimp, 10/350 µs) | 2 kA | |
| Voltage protection level (Up at In) | 1.5 kV | |
| Voltage protection level at 3 kA | 0.5 kV | |
| Voltage protection level at 5 kA | 0.7 kV | |
| Voltage protection level at 10 kA | 0.9 kV | |
| Response time | ≤25 ns | |
| Short-circuit withstand capability (Isccr) | 100 kA | |
| Maximum backup fuse | 160 A gG/gL | |
| Maximum backup circuit breaker | 125 A, B or C curve | |
| Integrated thermal disconnector | Yes | |
| Status indicator | Yes | |
| Remote signalling contact | No | |
| Solid conductor range | 2.5–25 mm² | |
| Stranded conductor range | 2.5–16 mm² | |
| Stripping length | 12.5 mm | |
| Terminal tightening torque | 2.5 N·m | |
| Protection rating | IP20 | |
| Operating and storage temperature | -40 to +80 °C | |
| Fire resistance | UL 94 V-0 | |
| Mounting | DIN rail | |
| Construction | Pluggable | |
| Width | 4 modular spaces | |
| Dimensions (H × W × D) | 88 × 71.2 × 76.7 mm | |
| Standard | IEC 61643-1 / EN 61643-11 | |
| Compatible phase replacement cartridge | OVR T2 40-275s C QS | |
| EAN | 3660308525345 |
Frequently Asked Questions
What is the ABB OVR T2 4L 40-275s P QS used for?
It is a four-pole Type 2 surge protective device designed to protect 230/400 V AC TN-S electrical installations against transient overvoltages caused by indirect lightning effects and switching events.
What are the discharge-current ratings of this SPD?
The OVR T2 4L 40-275s P QS has 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 4L 40-275s P QS?
The “s” denotes ABB's Safety Reserve functionality. This provides an additional protection stage when the primary surge protection stage reaches its end-of-life condition, allowing replacement to be planned while reserve protection remains available.
Does the OVR T2 4L 40-275s P QS have remote signalling?
No. This P QS version does not include an auxiliary remote signalling contact. ABB also offers the OVR T2 4L 40-275s P TS QS variant where remote status signalling is required.
Can the protection cartridges be replaced?
Yes. The ABB OVR T2 4L 40-275s P QS has a pluggable construction and uses replaceable OVR T2 40-275s C QS phase cartridges, allowing individual protection modules to be serviced without replacing the complete DIN rail base.
Trusted Surge Protection from ABB
ABB OVR Type 2 surge protective devices combine high surge-current capability with QuickSafe technology, Safety Reserve functionality and pluggable protection modules to support dependable transient overvoltage protection and planned maintenance in low-voltage distribution systems.
