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2CTB813251R2300 ABB OVR T1-T2 1L 25-255 P TS Surge Protective Device

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.

SKU: 2CTB813251R2300MPN: 2CTB813251R2300
Price
List Price £562.17 ex VAT
Your Price (ex VAT)
£562.17
Manufacturer Lead Time Estimated Delivery 5 weeks
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Manufacturer Lead Time

£562.17

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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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.

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