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2CTB815710R4700 ABB OVR T1-T2 3L 12.5-440s P QS Type 1 + Type 2 Surge Protective Device
ABB OVR T1-T2 3L 12.5-440s P QS 2CTB815710R4700 is a three-pole pluggable Type 1 + Type 2 surge protective device for 400/690 V AC TN-C and IT systems with 12.5 kA impulse current per pole, 30 kA nominal discharge current and 80 kA maximum discharge current.
£424.52
Why Choose the ABB OVR T1-T2 3L 12.5-440s P QS Surge Protective Device?
The ABB OVR T1-T2 3L 12.5-440s P QS is a high-performance combined Type 1 + Type 2 surge protective device (SPD) designed to protect three-phase low-voltage electrical systems against lightning currents and transient overvoltages. Identified by ABB order code 2CTB815710R4700, this three-pole device forms part of the ABB OVR QuickSafe range and is compatible with ABB System pro M compact distribution equipment.
Designed for TN-C and IT distribution systems, the device provides an impulse current rating of 12.5 kA per pole using a 10/350 µs waveform, a 30 kA nominal discharge current and an 80 kA maximum discharge current. Its 440 V AC maximum continuous operating voltage and 400/690 V AC nominal system rating make it particularly suitable for demanding three-phase industrial power networks.
The OVR T1-T2 3L 12.5-440s P QS incorporates ABB's QuickSafe reserve-varistor technology, providing additional protection availability when the primary surge protection stage reaches the end of its service life. Pluggable protection modules simplify maintenance, while visual status indication and preventive-maintenance functionality help operators identify when servicing is required.
Key Advantages
- Combined Type 1 + Type 2 lightning and surge protection in one device.
- Three-pole configuration for three-phase TN-C and IT systems.
- 12.5 kA impulse current (Iimp, 10/350 µs) per pole.
- 37.5 kA total impulse current across the three protected poles.
- 30 kA nominal discharge current (In) for Type 2 surge protection.
- 80 kA maximum discharge current (Imax) for high-energy transient events.
- 440 V AC maximum continuous operating voltage for higher-voltage applications.
- ABB QuickSafe reserve-varistor technology helps maintain basic protection at end of life.
- Pluggable protection modules simplify servicing and replacement.
- Visual status indication and preventive-maintenance functionality support routine inspection.
Key Features
- ABB OVR QuickSafe series.
- Type 1 + Type 2 / Class I + II surge protection.
- Three poles / three protected lines.
- Designed for TN-C and IT low-voltage distribution systems.
- 12.5 kA impulse current (Iimp, 10/350 µs) per pole.
- 37.5 kA total impulse current (10/350 µs).
- 30 kA nominal discharge current (In, 8/20 µs).
- 80 kA maximum discharge current (Imax, 8/20 µs).
- 240 kA total maximum discharge current.
- 400/690 V AC nominal system voltage.
- 440 V AC maximum continuous operating voltage L-PE.
- 2 kV voltage protection level (Up L-PE).
- 100 kA short-circuit withstand capability.
- Mechanical status indication and preventive-maintenance function.
- Pluggable DIN-rail-mounted construction.
Combined Lightning and Surge Protection for TN-C and IT Systems
Combined Type 1 + Type 2 SPDs provide coordinated protection against both high-energy lightning currents and transient surge voltages. The ABB OVR T1-T2 3L 12.5-440s P QS is tested for lightning-current impulses using the 10/350 µs waveform associated with Type 1 protection while also handling transient currents characterised by the 8/20 µs waveform used for Type 2 surge protection.
Its three-pole configuration is designed for TN-C and IT networks, with a nominal system voltage of 400/690 V AC. ABB's reserve-varistor design helps retain a basic level of surge protection when the primary protection stage reaches the end of its service life, while the pluggable construction and visual condition indication simplify ongoing maintenance.
Typical Applications
- Main electrical distribution switchboards.
- Three-phase TN-C electrical distribution systems.
- Three-phase IT electrical distribution systems.
- 400/690 V AC industrial power networks.
- Buildings equipped with external lightning protection systems.
- Industrial manufacturing and process-control facilities.
- Industrial automation and machinery installations.
- Commercial buildings and infrastructure systems.
- Protection of sensitive electrical and electronic equipment.
Technical Specifications
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| Remote Signal | No | |
|---|---|---|
| SPD Type | Type 1+2 | |
| Poles | 3-pole | |
| Earthing System | TN-C | |
| Device Type | Surge protection device | |
| Impulse Current Iimp (kA) | 12.5 kA | |
| Series | OVR QuickSafe / System pro M compact | |
| ABB order code | 2CTB815710R4700 | |
| Product group | Surge Protection Devices | |
| Product type | Combined Type 1 + Type 2 surge protective device | |
| SPD classification | Type 1 + Type 2 / Class I + II | |
| Number of poles | 3 | |
| Number of protected poles | 3 | |
| Low-voltage distribution systems | TN-C / IT | |
| Nominal system voltage | 400 / 690 V AC | |
| Maximum continuous operating voltage (L-PE) | 440 V AC | |
| Maximum continuous operating voltage (L-L) | 760 V AC | |
| Impulse current (Iimp, 10/350 µs) | 12.5 kA per pole | |
| Total impulse current (10/350 µs) | 37.5 kA | |
| Nominal discharge current (In, 8/20 µs) | 30 kA | |
| Maximum discharge current (Imax, 8/20 µs) | 80 kA | |
| Total maximum discharge current | 240 kA | |
| Voltage protection level (Up L-PE) | 2 kV | |
| Short-circuit withstand | 100 kA | |
| Preventive-maintenance function | Yes | |
| Status indication | Yes | |
| Reserve varistor | Yes | |
| Remote signalling | No | |
| Construction | Pluggable | |
| Mounting | DIN rail | |
| Protection rating | IP20 | |
| Modular width | 6 modules | |
| Dimensions (H × W × D) | 88 × 106.8 × 76.7 mm | |
| Weight | approx. 0.9 kg | |
| Power loss | 121 mW | |
| Maximum operating altitude | 5,000 m | |
| Standards | IEC 61643-11 / EN 61643-11 |
Frequently Asked Questions
What is the ABB OVR T1-T2 3L 12.5-440s P QS used for?
It is a combined Type 1 + Type 2 surge protective device designed to protect three-phase TN-C and IT electrical systems against lightning currents and transient overvoltages.
What is the impulse current rating of the ABB 2CTB815710R4700?
The device has an impulse current rating of 12.5 kA per pole using a 10/350 µs waveform, giving a total impulse current capability of 37.5 kA across its three poles.
What are the discharge current ratings of the OVR T1-T2 3L 12.5-440s P QS?
The device provides a 30 kA nominal discharge current and an 80 kA maximum discharge current per pole using an 8/20 µs waveform.
Does the ABB OVR T1-T2 3L 12.5-440s P QS have remote signalling?
No. This P QS version does not include an auxiliary remote-signalling contact; the corresponding P TS QS variant is available where remote status signalling is required.
What does the “s” designation mean on the OVR T1-T2 3L 12.5-440s P QS?
The “s” denotes ABB's reserve-varistor design, which helps maintain a basic level of surge protection when the primary protection element reaches the end of its service life, providing protection until the surge arrester can be replaced.
Trusted Lightning and Surge Protection from ABB
ABB OVR Type 1 + Type 2 surge protective devices combine lightning-current handling, high transient discharge capability, QuickSafe reserve-varistor technology, visual status indication and practical pluggable maintenance for dependable protection of modern electrical distribution systems.
