UMZ 250 Varistors

The UMZ 250 offers time-lag characteristic according to IEC 60127-4 and is a Universal Modular Fuse (UMF) with rated current values from 315 mA to 4 A. The product provides a high breaking capacity of up to 200 A at 250 VAC. The clip option allows a customer fuse replacement with the benefit that only the UMT 250 fits. This has the advantage that e.g. the technical specification in contrast to a 5x20 mm solution does not vary and spare fuses could be sold through the equipment manufacturer. With this setup, the manufacturer receives important information about equipment failures in the field. Gold cap are required, in order that the clip and the fuse are not soldered together in the reflow soldering process. As replacement, the standard UMT 250 can be used instead.