RT18 (also known as HG30) fuse isolator applied to rated voltage AC 380V/500V, rated currents up to 63A distribution device for overload and short circuit protection. Neon lamp and resistor form a fuse fuse signal isolator device (code 'X').

Supported by epoxy resin or plastic shell, equipped with contacts and set out after the melt, which is riveted or welded together, are composed of heterogeneous structure.
Open type, a single supporter has the function of isolated power supply.
Support for TH35mm DIN rail installation, and ease of installation.
With led devices, ensure that the fuse disconnect the wrong operation status display does not occur.