This listing covers the small control fuses used in Tornatech fire pump controllers, drawing identification FU1. Two ratings are available from the Amperage dropdown: FUSMRS0009 at 0.25 amp and FUSMRS0012 at 0.6 amp. Fuses in this position protect the controller's low-current control circuitry rather than the motor power path.
A blown control fuse commonly shows up as a dead display, an unresponsive control circuit, or a panel that has power at the line terminals but shows no signs of life. Always replace a control fuse with the same rating called out on your controller's electrical drawing — the FU1 designation identifies this fuse position on the drawing.
Check which rating your drawing specifies, then select the matching amperage (0.25 A or 0.6 A) at checkout. Veteran-owned Cybertronic Controls in Hammond, Louisiana keeps both ratings in stock — call 985-351-5681 if you are unsure which fuse your fire pump controller uses.