2CTB813010R2300 ABB OVR T1-T2 N 100-255 P Surge Protective Device

Why Choose the ABB OVR T1-T2 N 100-255 P Surge Protective Device?

The ABB OVR T1-T2 N 100-255 P, order code 2CTB813010R2300, is a high-capacity combined Type 1 and Type 2 neutral-to-earth surge protective device (SPD) designed for TN-S and TT low-voltage networks. Using spark-gap technology, it is intended for installation in main AC distribution switchboards and sub-distribution boards where substantial lightning-current and transient-overvoltage protection is required.

Designed for 230/400 V AC electrical systems, the OVR T1-T2 N 100-255 P provides an exceptional 100 kA impulse-current capability using the 10/350 µs lightning-current waveform. It also provides a nominal discharge current of 100 kA on the N-PE protection path and limits the voltage protection level to 1.5 kV.

The device provides a dedicated neutral-to-earth (N-PE) protection path with a maximum continuous operating voltage of 255 V AC. Its pluggable construction allows the protection module to be replaced when required, while the compact two-module DIN-rail format makes it straightforward to integrate into coordinated lightning and surge protection systems.

Key Advantages

• Combined Type 1 + Type 2 / Class I + II protection in a single device.
• High 100 kA lightning impulse-current capability using a 10/350 µs waveform.
• Dedicated N-PE protection for TN-S and TT electrical networks.
• 100 kA nominal discharge current on the neutral-to-earth protection path.
• Low 1.5 kV voltage protection level helps limit transient stress on downstream equipment.
• 255 V AC maximum continuous operating voltage.
• Spark-gap technology designed for high-energy lightning-current discharge.
• Pluggable construction simplifies maintenance and module replacement.
• Compact 36 mm width occupies only two DIN-rail modules.

Key Features

• ABB OVR T1-T2 series.
• Type 1 + Type 2 / Class I + II SPD.
• Dedicated neutral-to-earth protection.
• Suitable for TN-S and TT systems.
• Single protected N-PE line.
• Spark-gap protection technology.
• 100 kA impulse current Iimp using a 10/350 µs waveform.
• 100 kA nominal discharge current In on the N-PE path.
• 1.5 kV voltage protection level Up.
• 255 V AC maximum continuous operating voltage Uc.
• Response time of less than 100 ns.
• Pluggable protection module construction.
• IP20 degree of protection.
• 35 mm DIN-rail mounting.

High-Capacity Neutral-to-Earth Lightning and Surge Protection

In TN-S and TT electrical systems, the neutral-to-earth protection path plays an important role in a coordinated surge protection arrangement. The ABB OVR T1-T2 N 100-255 P uses spark-gap technology to conduct high-energy lightning currents between neutral and protective earth while maintaining electrical separation during normal operation.

Its exceptional 100 kA 10/350 µs impulse-current capability makes it suitable for demanding lightning protection applications at the origin of an installation. When combined with suitable line protection SPDs, it can form part of a coordinated Type 1 and Type 2 protection system for main switchboards, helping reduce transient stress on downstream distribution equipment and sensitive electronic loads.

Typical Applications

• Main AC distribution switchboards.
• Sub-distribution boards requiring high-capacity surge protection.
• 230/400 V AC TN-S electrical installations.
• 230/400 V AC TT electrical installations.
• Commercial and industrial buildings.
• Manufacturing plants and industrial facilities.
• Installations equipped with external lightning protection systems.
• Coordinated line-to-neutral and neutral-to-earth surge protection assemblies.