Surge protector without disconnector ETITEC A 280/5/B-N 002441106

Surge protection in electrical installations

The ETITEC A 280/5/B-N surge arrester is a reliable device designed to protect electrical installations from the effects of voltage surges and overvoltages. Its task is to minimize the risk of damage to sensitive electronic equipment and ensure uninterrupted power supply. This is particularly important in residential, commercial and industrial buildings, where failures caused by overvoltages can generate significant financial losses and disrupt production processes.

This arrester effectively protects against the effects of atmospheric discharges and overvoltages resulting from the operation of devices in the network. Because it is a surge arrester without a disconnector, its installation is simple and quick, which translates into saving time and installation costs.

Characteristics and application

The device operates at a rated voltage of 230/400 V at a frequency of 50 Hz. The continuous operating voltage (Uc) is 280 V AC. The surge arrester is characterized by protection class II, which means an increased level of safety. It is a type 1 arrester, designed for installation at the building connection point or in the main distribution board.

• Maximum discharge current Imax (8/20µs): 5kA – indicates the ability to dissipate large amounts of energy during a surge.
• Protection voltage: ≤ 900V – specifies the maximum voltage at which the arrester begins to operate, dissipating energy to ground.
• Impact resistance: 40kA – informs about the amount of energy the arrester can withstand without damage.

Construction and assembly

The arrester's construction ensures its reliable operation in various environmental conditions. Installation is intuitive and does not require specialized tools – simply mount it on a TH35 rail. Thanks to its compact size, the device easily integrates with the existing electrical infrastructure. It is important to remember to connect it to ground correctly to ensure full protection effectiveness.