FRM-A Fuse Holder with DRM-A Fuses

SCHURTER’s FRM-A panel mount fuse holder with DRM-A SMT fuse is a small, light, and robust circuit protection solution designed for avionics applications. The extreme-performance circuit protection system is compact, measuring less than 15 mm deep behind the panel.

The ultra-compact FRM-A fuse holder was originally designed to withstand harsh environmental conditions in the avionics industry and qualified for use up to 50,000 feet. The modest dimensions and high ingress protection rating of IP67 make it ideal for use in any challenging environment. The FRM-A has passed vibration, shock, and salt mist tests according to NF C20-7XX and IEC 60068-2-XX, confirming its exceptionally robust design. It is built according to UL 4248-1 and CSA C22.2 no. 4248-1 and developed exclusively for SCHURTER’s DRM-A SMT ceramic fuse.

The DRM-A is a fast-acting ceramic SMT fuse built according to UL 248-14. It uses gold plating on the endcaps to protect against tin whiskers. DRM-A was designed, developed, and explicitly qualified for avionics applications, featuring a pre-arcing time rated for an altitude of 50,000 feet, but is suitable for any application requiring an equivalent reliable and robust design. It features direct solderability to the PCB and is impermeable to potting compounds often used in applications required to meet ATEx and IECEx. Rated 0.5 A to 8 A at 250 V_DC and 125 V_DC, the DRM-A also meets similar IEC environmental tests as the FRM-A, as well as additional MIL-STD-202 tests.