Why Choose the ABB OVR T1-T2 N 50-255 C Replacement Surge Protection Cartridge?
The ABB OVR T1-T2 N 50-255 C is a single-pole neutral-to-earth replacement surge protection cartridge for compatible ABB OVR combined Type 1 + Type 2 surge protective devices (SPDs). Identified by ABB order code 2CTB812522R2300, it is designed for the N-PE protection path of ABB OVR assemblies used in TT and TN-S low-voltage distribution systems.
This cartridge provides high-energy lightning-current protection through a 50 kA impulse current (Iimp) rating using the 10/350 µs waveform. It also provides a 25 kA nominal discharge current (In) and 60 kA maximum discharge current (Imax) using the 8/20 µs waveform, making it suitable for restoring the protection capability of compatible ABB OVR T1-T2 assemblies without replacing the complete surge protection device.
The OVR T1-T2 N 50-255 C has a 255 V AC maximum continuous operating voltage across N-PE and a 1.5 kV voltage protection level (Up). Its pluggable cartridge format enables straightforward replacement during maintenance and is used as the neutral protection module in products including the ABB OVR T1-T2 1N 50-255 P TS.
Key Advantages
- Genuine ABB replacement cartridge for compatible OVR Type 1 + Type 2 surge protective devices.
- Dedicated neutral-to-earth (N-PE) protection module.
- High 50 kA impulse current (Iimp) capability using a 10/350 µs 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.
- 1.5 kV voltage protection level (Up).
- Pluggable design allows the protection cartridge to be replaced without changing the complete SPD assembly.
- Suitable for compatible ABB OVR installations in TT and TN-S systems.
Key Features
- ABB OVR T1-T2 replacement cartridge.
- Combined Type 1 + Type 2 surge protection technology.
- Single protected pole.
- Designed specifically for the N-PE protection path.
- 255 V AC maximum continuous operating voltage (Uc), N-PE.
- 50 kA impulse current (Iimp, 10/350 µs).
- 50 kA total discharge current (Itotal, 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 kA short-circuit withstand capability.
- Pluggable replacement-cartridge construction.
Reliable Replacement Protection for ABB OVR T1-T2 Systems
Combined Type 1 and Type 2 surge protective devices are designed to manage both high-energy lightning currents and transient overvoltages. The neutral-to-earth protection path is particularly important in 1+1 and 3+1 configurations, providing a controlled discharge route between neutral and protective earth while helping limit the voltage stress imposed on the installation.
The ABB OVR T1-T2 N 50-255 C provides a 50 kA 10/350 µs lightning impulse capability in a replaceable cartridge format. When a compatible neutral protection module requires replacement, this cartridge allows the ABB OVR assembly to be serviced without replacing the complete DIN rail base, helping simplify maintenance and reduce unnecessary component replacement.
Typical Applications
- Replacement neutral cartridge for compatible ABB OVR T1-T2 SPDs.
- ABB OVR T1-T2 1N 50-255 P TS surge protection assemblies.
- TT low-voltage distribution systems.
- TN-S low-voltage distribution systems.
- Main electrical distribution boards.
- Commercial and industrial switchboards.
- Maintenance and servicing of ABB OVR lightning and surge protection installations.
