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2CTB813251R2300 ABB OVR T1-T2 1L 25-255 P TS Surge Protective Device
ABB OVR T1-T2 1L 25-255 P TS single-pole combined Type 1 and Type 2 pluggable surge protective device for 230/400 V AC TT, TN-S and TN-C systems, with 25 kA impulse current, 60 kA maximum discharge current and remote status signalling.
£421.63
Why Choose the ABB OVR T1-T2 1L 25-255 P TS Surge Protective Device?
The ABB OVR T1-T2 1L 25-255 P TS is a combined Type 1 + Type 2 surge protective device (SPD) designed to protect low-voltage electrical installations against high-energy lightning currents and transient overvoltages. Identified by ABB order code 2CTB813251R2300, this single-pole SPD is suitable for TT, TN-S and TN-C distribution systems and is intended for installation in main AC distribution switchboards and sub-distribution boards.
Using spark-gap technology, the OVR T1-T2 1L 25-255 P TS provides a 25 kA lightning impulse current (Iimp) using the 10/350 µs waveform, together with a 25 kA nominal discharge current (In) and 60 kA maximum discharge current (Imax) using the 8/20 µs waveform. Its voltage protection level of ≤1.5 kV helps limit transient voltage stress on downstream equipment.
The device is designed for 230/400 V AC networks and has a 264 V AC maximum continuous operating voltage (Uc). Its pluggable construction enables straightforward cartridge replacement, while the integrated TS 1NO + 1NC remote signalling contact allows the SPD condition to be monitored from an external control, alarm or building-management system.
Key Advantages
- Combined Type 1 + Type 2 protection for lightning-current and transient-overvoltage protection.
- 25 kA impulse current (Iimp) using the 10/350 µs lightning-current waveform.
- 25 kA nominal discharge current (In) using an 8/20 µs waveform.
- 60 kA maximum discharge current (Imax) using an 8/20 µs waveform.
- Low ≤1.5 kV voltage protection level (Up).
- Suitable for TT, TN-S and TN-C low-voltage networks.
- TS remote signalling supports external monitoring of protection status.
- Pluggable cartridge construction simplifies servicing and replacement.
Key Features
- ABB OVR T1-T2 surge protection range.
- Type 1 + Type 2 / Class I + Class II SPD.
- Single protected line.
- Spark-gap technology.
- 230/400 V AC nominal network voltage.
- 264 V AC maximum continuous operating voltage (Uc).
- 25 kA impulse current (Iimp, 10/350 µs).
- 25 kA nominal discharge current (In, 8/20 µs).
- 60 kA maximum discharge current (Imax, 8/20 µs).
- ≤1.5 kV voltage protection level (Up).
- 50 kA follow-current interruption capability (Ifi).
- Green/red end-of-life status indication.
- 1NO + 1NC TS auxiliary contact for remote status signalling.
- Pluggable protection cartridge and DIN rail mounting.
Reliable Type 1 and Type 2 Protection with Remote Status Monitoring
Combined Type 1 and Type 2 SPDs provide coordinated protection against both high-energy lightning-current impulses and transient overvoltages. The ABB OVR T1-T2 1L 25-255 P TS handles a 25 kA 10/350 µs lightning impulse while also providing 8/20 µs Type 2 surge protection, making it suitable for installation at main and sub-distribution levels where substantial surge-current capability is required.
Its spark-gap technology combines high lightning-current capability with a ≤1.5 kV protection level. The pluggable cartridge facilitates maintenance, while the visual end-of-life indicator and 1NO + 1NC TS contact provide both local and remote indication of protection status, supporting planned maintenance of electrical distribution systems.
Typical Applications
- Main AC electrical distribution switchboards.
- Sub-distribution boards.
- 230/400 V AC low-voltage installations.
- TT, TN-S and TN-C distribution systems.
- Commercial and industrial electrical installations.
- Building power distribution systems.
- Installations requiring combined Type 1 and Type 2 lightning and surge protection.
- Electrical systems requiring remote SPD status monitoring.
Technical Specifications
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| Remote Signal | Yes | |
|---|---|---|
| Device Type | Surge protection device | |
| SPD Type | Type 1+2 | |
| Poles | 1-pole | |
| Impulse Current Iimp (kA) | 25 kA | |
| Series | OVR T1-T2 | |
| ABB order code | 2CTB813251R2300 | |
| Product group | Surge Protection Devices | |
| Product type | Combined lightning-current and surge protective device | |
| SPD classification | Type 1 + Type 2 / Class I + Class II | |
| Technology | Spark gap | |
| Number of protected lines | 1 | |
| Number of poles | 1 | |
| Low-voltage distribution systems | TT / TN-S / TN-C | |
| Protection modes | L-N / N-PE / L-PE (N), according to installation configuration | |
| Nominal network voltage | 230/400 V AC | |
| Maximum continuous operating voltage (Uc) | 264 V AC | |
| System frequency | 47–63 Hz | |
| Impulse current (Iimp, 10/350 µs) | 25 kA | |
| Total discharge current (Itotal, 10/350 µs) | 25 kA | |
| Nominal discharge current (In, 8/20 µs) | 25 kA | |
| Maximum discharge current (Imax, 8/20 µs) | 60 kA | |
| Voltage protection level (Up) | ≤1.5 kV | |
| Short-circuit current rating (Isccr) | 50 kA | |
| Maximum prospective short-circuit current | 100 kA | |
| Follow current interrupted (Ifi) | 50 kA | |
| Backup protection | ≤315 A gG | |
| Leakage current | <1 mA | |
| Response time | <100 ns | |
| TOV withstand L-N | 440 V for 120 minutes | |
| End-of-life indicator | Green = functional / red = replace | |
| Remote signalling | Yes | |
| Auxiliary contact | 1NO + 1NC | |
| Minimum auxiliary-contact load | 12 V DC / 10 mA | |
| Maximum auxiliary-contact load | 250 V AC / 1 A | |
| Protection rating | IP20 | |
| Operating temperature | -40 to +80 °C | |
| Maximum operating altitude | 2000 m | |
| Relative humidity | 95% non-condensing | |
| Flexible conductor cross-section | 10–35 mm² | |
| Solid/stranded conductor cross-section | 10–50 mm² | |
| Stripping length | 16.5 mm | |
| Main-terminal tightening torque | 7 N·m | |
| Mounting | DIN rail | |
| Construction | Pluggable | |
| Dimensions (H × W × D) | 99 × 36 × 73 mm | |
| Weight | 0.33 kg | |
| Enclosure material rating | UL 94 V-0 | |
| Enclosure colour | Grey RAL 7035 | |
| Standards | IEC 61643-11 / EN 61643-11 / UL 1449 5th Edition / GB/T 18802.11-2020 | |
| Approvals | VDE / KEMA / UL / UKCA / RCM / CMIM / CQC | |
| Compatible replacement cartridge | OVR T1-T2-T3 1L 25-255 C | |
| Replacement cartridge order code | 2CTB813252R2300 |
Frequently Asked Questions
What is the ABB OVR T1-T2 1L 25-255 P TS used for?
It is a combined Type 1 and Type 2 surge protective device for protecting low-voltage TT, TN-S and TN-C electrical installations against high-energy lightning currents and transient overvoltages.
What is the lightning impulse current rating?
The OVR T1-T2 1L 25-255 P TS has an impulse current (Iimp) rating of 25 kA using the 10/350 µs lightning-current waveform.
What are the Type 2 discharge-current ratings?
The device provides a nominal discharge current (In) of 25 kA and a maximum discharge current (Imax) of 60 kA using an 8/20 µs waveform.
What does TS mean on the OVR T1-T2 1L 25-255 P TS?
The TS designation indicates remote signalling. This model incorporates a 1NO + 1NC auxiliary contact rated up to 250 V AC / 1 A, allowing SPD status to be monitored by an external system.
Can the protection cartridge be replaced?
Yes. The SPD has a pluggable construction. Its compatible replacement cartridge is the ABB OVR T1-T2-T3 1L 25-255 C, order code 2CTB813252R2300.
Trusted Lightning and Surge Protection from ABB
ABB OVR combined Type 1 and Type 2 surge protective devices provide high-capacity lightning-current and transient overvoltage protection for low-voltage distribution systems, with pluggable modules and remote signalling options that support efficient inspection and maintenance.
