Surge arrester without disconnector ETITEC A 280/5/A-N 002441105

Surge protection in AC installations

The ETITEC A 280/5/A-N surge limiter is a component designed to protect electrical installations from the effects of voltage surges that can damage sensitive equipment. This is particularly important in places exposed to frequent voltage changes or electromagnetic inductions. The device uses varistor technology, which effectively suppresses surges, protecting connected circuits.

Construction and application

This limiter is designed for direct mounting and is compatible with TN, TN-C and TN-S network systems. Its varistor-based design allows for a quick response to sudden voltage spikes, dissipating excess energy to ground. This protects devices from damage caused by atmospheric surges or network disturbances. The discharge nominal current at 5kA (8/20μs) and the ability to withstand a short-circuit current of 4kA make it a solid choice for protecting various installations.

Key features and benefits

• Protection class C: This means that the limiter reacts quickly to surges, but tolerates short-term current spikes, which is important when connecting devices with motors or other elements generating surge currents during start-up.
• Operating voltage Uc 280V: Intended for 230V AC installations, providing optimal protection under standard operating conditions.
• High efficiency: Protection level of 0.9kV guarantees effective limitation of surges to a safe level for connected devices.
• Optical signaling: Built-in optical indicator informs about the operation of the limiter, which facilitates troubleshooting and quick response in case of failure.
• Application in various network systems: Compatibility with TN, TN-C and TN-S systems provides wide range of applications in various types of electrical installations.
• Discharge nominal current 5kA: Provides effective protection against surges with high energy.
• Short-circuit strength 4kA: Allows for safe operation in the event of a short circuit in the installation.