Surge arrester 24V type FRD 24 5098514

Protection of installations and devices against overvoltage

The FRD 24 surge arrester is a reliable element for protecting electrical installations from the effects of lightning strikes and overvoltages. Designed for mounting on a TH-35 mm DIN rail, it provides effective protection in control, measurement and regulation systems. Its compact dimensions and simple installation make it an ideal solution for both professional installers and end users.

Functionality and construction

This surge arrester is a combination of overvoltage protection, designed to operate in two-wire systems. The two-stage protection circuit ensures a quick response to sudden voltage changes, minimizing the risk of damage to connected devices. Equipped with connection terminals, it facilitates quick and easy connection of wires. In addition, decoupling resistors in the longitudinal branch increase the effectiveness of protection against interference.

Key parameters and application

The device is characterized by a surge current of 1.5 kA (10/350 µs) and the ability to dissipate discharges with a peak value of 5 kA (8/20 µs). Its cut-off frequency is 1.1 MHz, which ensures effectiveness over a wide frequency range. This arrester is designed to operate with a rated current of 0.2 A and a maximum continuous operating voltage of AC 19 V and DC 28 V. The protection levels are 60 V (phase/phase) and 600 V (phase/ground), which guarantees a high level of safety. The IP20 degree of protection indicates protection against accidental contact, which is important in installation applications. The FRD 24 arrester finds universal application in enclosures and switchboards where overvoltage protection is required.