Surge protector with disconnector ETITEC A 660/5/A-NO 002441130

Overhead Line Protection – Surge Arrester ETITEC A 660/5/A-NO

This surge arrester, designed for installation on overhead low-voltage lines, is a key element ensuring power supply safety and reliability. Designed by ETI Polam, the ETITEC A 660/5/A-NO model effectively protects devices against the effects of atmospheric and switching surges. Its construction with a disconnect switch indicating operation facilitates damage location and quick replacement.

Construction and application

This arrester is dedicated to bare lines, meaning it does not have external insulation. Its task is to limit the voltage to a safe level in the event of a surge, protecting connected receivers. The use of a disconnect switch allows for visual identification of the device's status – whether it has operated and needs to be replaced. This is particularly important in the event of a network failure, where a quick response minimizes downtime.

• Overvoltage protection: Protects the electrical installation from damage caused by sudden voltage increases.
• Direct mounting: Enables simple and quick mounting directly on the overhead line.
• Optical signaling: Built-in optical indicator informs about the operation of the arrester, facilitating diagnostics and maintenance.
• For bare lines: Specifically designed for use in overhead lines without external insulation.

Operating parameters and specifications

The ETITEC A 660/5/A-NO arrester is characterized by high parameters that guarantee effective protection. The maximum AC operating voltage is 660V, and the rated AC voltage is 230V. The rated discharge current (8/20) reaches 5kA, providing protection even with strong surges. The possibility of connecting wires with a cross-section of up to 120 mm² means that the arrester can protect various installations. The TN network system further increases its compatibility with most electrical installations.

• Maximum wire cross-section: up to 120 mm²
• Rated discharge current: 5 kA
• Network system: TN
• Maximum continuous AC operating voltage: 660 V
• Rated AC voltage: 230 V
• Protection level: 2 kV