The Teco L510 manual calls for a fast acting 50Amp 690VAC fuse for the 3HP single phase input application (refers to a Bussman 50FE 'brittish style' fuse with bolt lugs).
The spec'ed 50FE is not generally stocked at digikey, newark, mouser etc.. I'm wondering what folks are using for 3HP Teco applications.
Searching around, other TECO manuals have shown two fuse requirement tables: one spec'ing 30A/300VAC fuses for general application (Non UL), and the Bussman 50FE fuse for UL rated applications. . . So, I assume they needed a fast acting fuse to address the UL requirements regarding a dead short on the motor side, and that this 50A monster was what was required to avoid fireworks during the test.
Does anyone have a reasonable cost alternative to the spec'ed fuse for the L510-203?
The spec'ed 50FE is not generally stocked at digikey, newark, mouser etc.. I'm wondering what folks are using for 3HP Teco applications.
Searching around, other TECO manuals have shown two fuse requirement tables: one spec'ing 30A/300VAC fuses for general application (Non UL), and the Bussman 50FE fuse for UL rated applications. . . So, I assume they needed a fast acting fuse to address the UL requirements regarding a dead short on the motor side, and that this 50A monster was what was required to avoid fireworks during the test.
Does anyone have a reasonable cost alternative to the spec'ed fuse for the L510-203?