Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
2CTB813250R2300 ABB OVR T1-T2 1L 25-255 P Surge Protective Device
ABB OVR T1-T2 1L 25-255 P 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 a protection level of ≤1.5 kV.
£404.77
Why Choose the ABB OVR T1-T2 1L 25-255 P Surge Protective Device?
The ABB OVR T1-T2 1L 25-255 P 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 2CTB813250R2300, this single-pole device is suitable for TT, TN-S and TN-C distribution systems and is typically installed in main AC distribution boards or sub-distribution boards.
Using spark-gap technology, the OVR T1-T2 1L 25-255 P combines substantial lightning-current handling with a low residual protection voltage. It provides a 25 kA 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.
The device operates on 230/400 V AC networks with a 264 V AC maximum continuous operating voltage (Uc) and provides a voltage protection level of ≤1.5 kV. Its pluggable construction enables the protection cartridge to be replaced independently of the DIN rail base, simplifying maintenance of lightning and surge protection systems.
Key Advantages
- Combined Type 1 + Type 2 protection in a single compact SPD.
- 25 kA impulse current (Iimp) using the 10/350 µs lightning-current waveform.
- 60 kA maximum discharge current (Imax) using an 8/20 µs waveform.
- 25 kA nominal discharge current (In) for dependable Type 2 surge protection.
- Low ≤1.5 kV voltage protection level (Up) helps limit transient stress on downstream equipment.
- Suitable for TT, TN-S and TN-C distribution networks.
- 50 kA follow-current interruption capability supports demanding AC installations.
- Pluggable cartridge construction simplifies servicing and replacement.
Key Features
- ABB OVR T1-T2 surge protection range.
- Type 1 + Type 2 / Class I + Class II surge protection.
- 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).
- <100 ns response time.
- Green/red end-of-life indication for straightforward condition checking.
- Pluggable protection cartridge for convenient maintenance.
Reliable Type 1 and Type 2 Protection for AC Distribution Systems
Combined Type 1 and Type 2 SPDs are designed to handle both high-energy lightning-current impulses and transient overvoltages within low-voltage power systems. The ABB OVR T1-T2 1L 25-255 P withstands a 25 kA 10/350 µs impulse current while also providing Type 2 performance against 8/20 µs surge currents, helping coordinate lightning and surge protection within a single device.
Its spark-gap technology provides high lightning-current capability together with a ≤1.5 kV protection level. The pluggable architecture allows the protection cartridge to be replaced independently of the base, while the green/red indicator provides a clear visual indication of whether the installed protection module remains operational.
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.
Technical Specifications
Tick the specs you need, then view products that match.
| Remote Signal | No | |
|---|---|---|
| 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 | 2CTB813250R2300 | |
| 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 | |
| Maximum 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 | |
| Mounting | DIN rail | |
| Construction | Pluggable | |
| Maximum operating altitude | 2000 m | |
| Operating temperature | -40 to +70 °C | |
| Dimensions (H × W × D) | 90 × 36 × 73 mm | |
| Weight | 0.3 kg | |
| 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 1L 25-255 C | |
| Replacement cartridge order code | 2CTB813252R2300 |
Frequently Asked Questions
What is the ABB OVR T1-T2 1L 25-255 P used for?
It is a combined Type 1 and Type 2 surge protective device designed to protect 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 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 is the maximum continuous operating voltage?
The ABB OVR T1-T2 1L 25-255 P has a maximum continuous operating voltage (Uc) of 264 V AC and is designed for 230/400 V AC networks.
Can the protection cartridge be replaced?
Yes. The device has a pluggable construction. Its compatible replacement module is the ABB OVR T1-T2 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, combining spark-gap technology with pluggable construction for dependable protection and convenient maintenance.
