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2CTB815704R1200 ABB OVR T2 40-275s P QS Surge Protective Device
ABB OVR T2 40-275s P QS is a single-pole pluggable Type 2 surge protective device with Safety Reserve technology, 20 kA nominal discharge current, 40 kA maximum discharge current, 275 V AC maximum continuous operating voltage and a 1.4 kV protection level.
£54.16
Why Choose the ABB OVR T2 40-275s P QS Surge Protective Device?
The ABB OVR T2 40-275s P QS, order code 2CTB815704R1200, is a compact Type 2 surge protective device (SPD) designed to protect low-voltage electrical installations and sensitive equipment against transient overvoltages caused by indirect lightning effects and switching events. It is suitable for coordinated surge protection in residential, commercial and industrial distribution systems.
Designed for 230 V AC networks with a maximum continuous operating voltage of 275 V AC, the OVR T2 40-275s P QS provides a nominal discharge current In of 20 kA and a maximum discharge current Imax of 40 kA using the 8/20 µs waveform. Its voltage protection level Up of 1.4 kV helps limit transient voltage reaching downstream electrical and electronic equipment.
This single-pole SPD combines ABB QuickSafe technology with a Safety Reserve preventive-maintenance function. Rather than leaving the installation completely unprotected when the primary varistor reaches end of life, the reserve protection stage continues to provide basic surge protection until the cartridge can be replaced. Its pluggable construction and visual status indication further simplify inspection and maintenance.
Key Advantages
- Reliable Type 2 / Class II surge protection for low-voltage installations.
- 40 kA maximum discharge current using the 8/20 µs waveform.
- 20 kA nominal discharge current for effective transient surge suppression.
- 1.4 kV voltage protection level helps protect sensitive downstream equipment.
- Safety Reserve function maintains basic protection after the primary protection stage reaches end of life.
- ABB QuickSafe technology supports dependable thermal disconnection.
- Pluggable cartridge construction simplifies maintenance and replacement.
- Visual status indication enables straightforward inspection.
- 100 kA short-circuit withstand capability supports demanding installations.
- Compact 17.8 mm single-module width conserves DIN-rail space.
Key Features
- ABB OVR T2 QuickSafe series.
- Type 2 / Class II surge protective device.
- Single-pole, single protected-line configuration.
- Suitable for use in TT, TN-C and TN-S systems as part of the appropriate SPD arrangement.
- 230 V AC nominal voltage.
- 275 V AC maximum continuous operating voltage Uc.
- 20 kA nominal discharge current In.
- 40 kA maximum discharge current Imax.
- 2 kA impulse-current capability using a 10/350 µs waveform.
- 1.4 kV voltage protection level Up.
- Safety Reserve preventive-maintenance feature.
- Pluggable protection cartridge.
- Optical/mechanical status indication.
- IP20 degree of protection.
Type 2 Surge Protection with Safety Reserve Technology
Type 2 SPDs are designed to safely discharge transient currents characterised by the 8/20 µs waveform before damaging overvoltages can reach sensitive equipment. The ABB OVR T2 40-275s P QS combines a 20 kA nominal discharge current, 40 kA maximum discharge current and 1.4 kV protection level in a compact single-module format suitable for coordinated surge protection.
The distinguishing Safety Reserve feature provides an additional level of protection availability. When the main varistor reaches the end of its service life, a reserve varistor continues to provide basic surge protection until maintenance can be performed. Combined with visual status indication and a replaceable cartridge, this allows maintenance personnel to identify deterioration and schedule replacement without unnecessarily changing the complete SPD assembly.
Typical Applications
- Main low-voltage distribution boards.
- Sub-distribution boards and local electrical panels.
- Residential electrical installations.
- Commercial buildings and offices.
- Industrial electrical and control panels.
- Protection of sensitive electronic and automation equipment.
- TT, TN-C and TN-S low-voltage distribution systems.
- Installations requiring preventive SPD maintenance indication.
- Coordinated surge protection systems using pluggable ABB OVR devices.
Technical Specifications
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| Remote Signal | No | |
|---|---|---|
| Device Type | Surge protection device | |
| SPD Type | Type 2 | |
| Poles | 1-pole | |
| Impulse Current Iimp (kA) | 2 kA | |
| Series | OVR T2 QuickSafe | |
| ABB order code | 2CTB815704R1200 | |
| EAN / GTIN | 3660308525291 | |
| Product group | Surge Protection Devices | |
| Product type | Type 2 surge protective device | |
| SPD classification | Type 2 / Class II | |
| Standard | IEC 61643-11 / EN 61643-11 | |
| Low-voltage distribution systems | TT / TN-C / TN-S | |
| Number of poles | 1 | |
| Number of protected lines | 1 | |
| Nominal voltage Un | 230 V AC | |
| Nominal system voltage | 230 / 400 V AC | |
| Maximum continuous operating voltage Uc | 275 V AC | |
| Temporary overvoltage test value UT | 337 V | |
| Impulse current Iimp (10/350 µs) | 2 kA | |
| 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 withstand capability | 100 kA | |
| Rated service short-circuit breaking capacity Ics | 100 kA | |
| Maximum backup circuit breaker | 125 A, B or C curve | |
| Safety Reserve | Yes | |
| QuickSafe technology | Yes | |
| Status indicator | Yes | |
| Remote signalling | No | |
| Construction | Pluggable | |
| Replacement cartridge | OVR T2 40-275s C QS | |
| Replacement cartridge order code | 2CTB815704R2600 | |
| Degree of protection | IP20 | |
| Operating temperature | -40 to +80 °C | |
| Power loss | 28 mW | |
| Mounting type | 35 mm DIN rail | |
| Module width | 1 module | |
| Width | 17.8 mm | |
| Height | 88 mm | |
| Depth | 76.7 mm | |
| Weight | approx. 0.15 kg |
Frequently Asked Questions
What is the ABB OVR T2 40-275s P QS used for?
It is a Type 2 surge protective device designed to protect low-voltage electrical installations and sensitive equipment against transient overvoltages caused by indirect lightning effects and electrical switching events.
What are the discharge-current ratings of the OVR T2 40-275s P QS?
The device has a nominal discharge current In of 20 kA and a maximum discharge current Imax of 40 kA using the 8/20 µs waveform.
What does the “s” mean in OVR T2 40-275s?
The “s” identifies ABB's Safety Reserve version. A reserve varistor continues to provide basic protection after the primary protection stage reaches end of life, giving maintenance personnel time to replace the cartridge while retaining a level of surge protection.
Does the OVR T2 40-275s P QS have remote signalling?
No. ABB order code 2CTB815704R1200 is the version without the TS auxiliary remote-signalling contact. The corresponding TS version is available where remote SPD condition monitoring is required.
Can the protection cartridge be replaced?
Yes. The OVR T2 40-275s P QS uses a pluggable protection cartridge. The compatible replacement cartridge is the ABB OVR T2 40-275s C QS, order code 2CTB815704R2600.
Trusted ABB Surge Protection Technology
ABB OVR Type 2 surge protective devices combine high surge-current capability, compact pluggable construction and QuickSafe technology, with the OVR T2 40-275s P QS adding Safety Reserve functionality to maintain basic protection and support planned maintenance when the primary protection stage reaches end of life.
