Reliable fault protection for switched-mode power

Published: 23 July 2003 Category: News

A new and innovative Weidmuller WAVEGuard electronic fuse uniquely protects 24V DC circuits:

For the first time, the new Weidmuller WAVEGuard provides industrial control and switching systems with fully reliable fault protection for switched-mode 24VDC power supplies; conventional automatic circuit breakers require too high a current to operate normally. As well as full, selective dynamic and static protection, the innovative Weidmuller WAVEGuard (patents applied for) offers many features to ensure its wide application potential.

How it works:

WAVEGuard comprises an electronic fuse using fast semi-conductors and a factory-set trip current; it will trip in 3.5ms. The highest permissible static value is 100% of the fuse's nominal current value (not the 250% to 1500% required by automatic circuit breakers). To achieve a dynamic value trip, current spikes are fed to the load and activate the fuse when a short circuit is detected. A conventional fuse is installed in series with the electronic fuse as added protection.

The WAVEGuard is housed in Weidmuller's WAVEBOX DIN rail-mount housing. The sophisticated features include a sliding switch to set and reset the fusing element with remote operation possible, six available connections including the NC contact for extra low voltages, and LED indication of the fuse status. Choices may be made of Weidmuller's proven screw clamp or non-screw tension clamp connections, a 24VDC primary branch circuit 0V potential and reset input and signal contact.

Weidmuller
1 Abbey Wood Road, Kings Hill,
West Malling, Kent ME19 4YT
Tel: 01732 877032
Fax: 01732 874296
Email: [email protected]