Why Choose the ABB eOVR T1-T2 3N 12.5-440s Digital Surge Protection Device?
The ABB eOVR T1-T2 3N 12.5-440s, order code 2TAM913100R5811, is an intelligent combined Type 1 and Type 2 surge protection device (SPD) designed to protect three-phase low-voltage electrical installations against lightning currents and transient overvoltages. As part of the ABB eOVR digital surge protection range, it combines high-energy surge protection with connected monitoring functions for modern electrical distribution systems.
Designed with a 3+1 protection configuration, the eOVR T1-T2 3N 12.5-440s is suitable for three-phase systems with neutral and has a nominal system voltage of 400/690 V AC. It provides an impulse current rating (Iimp) of 12.5 kA using the 10/350 µs lightning-current waveform, together with a nominal discharge current (In) of 20 kA and maximum discharge current (Imax) of 80 kA.
The device has a maximum continuous operating voltage (Uc) of 440 V AC and a voltage protection level (Up) of 1.4 kV. In addition to surge protection, the eOVR platform provides digital monitoring of protection status and surge events, allowing electrical-system operators to obtain greater visibility of SPD condition through compatible ABB monitoring infrastructure.
Key Advantages
- Combined Type 1 + Type 2 surge protection for lightning currents and transient overvoltages.
- 12.5 kA impulse current rating using a 10/350 µs waveform.
- 80 kA maximum discharge current for high-energy transient protection.
- 20 kA nominal discharge current for dependable surge-current handling.
- 440 V AC maximum continuous operating voltage for higher-voltage distribution systems.
- Designed for 400/690 V AC three-phase systems with neutral.
- 3+1 protection configuration for coordinated phase and neutral protection.
- Digital monitoring supports condition-based and preventative maintenance strategies.
Key Features
- ABB eOVR digital surge protection series.
- Combined Type 1 and Type 2 SPD.
- 3+1 protection configuration.
- 400/690 V AC nominal system voltage.
- 440 V AC maximum continuous operating voltage (Uc).
- 12.5 kA impulse current Iimp (10/350 µs).
- 20 kA nominal discharge current In (8/20 µs).
- 80 kA maximum discharge current Imax (8/20 µs).
- 1.4 kV voltage protection level (Up).
- Digital SPD condition and lifetime monitoring.
- Surge-event monitoring for improved installation visibility.
- Records up to 20 surge events and 10 SPD remote-signal status changes.
- Designed for integration with compatible ABB digital energy-management infrastructure.
Intelligent Lightning and Surge Protection
Combined Type 1 and Type 2 surge protection devices are designed to manage both high-energy lightning-current impulses and switching or induced transient overvoltages. The ABB eOVR T1-T2 3N 12.5-440s combines these protection stages in one coordinated device, making it suitable for installation in distribution systems where robust lightning and surge protection is required.
The eOVR platform adds digital intelligence to conventional surge protection by providing information about the condition and operating history of the SPD. Event recording and remote monitoring capabilities help maintenance teams identify surge activity, assess protection-system condition and plan maintenance without relying solely on periodic visual inspection.
Typical Applications
- Three-phase 400/690 V AC electrical distribution systems.
- Main low-voltage distribution boards.
- Industrial electrical installations.
- Commercial and infrastructure power distribution.
- Buildings equipped with external lightning protection systems.
- Protection of automation, control and sensitive electronic equipment.
- Digitally monitored electrical distribution and energy-management systems.
