Looks so elegant, yet it is just a mechanical micro-switch with two stab on terminals housed inside the finned outer housing. This housing is made to look like a high tech heat dissipation device. Looks as if there is a power transistor inside carefully monitoring the pressure with a high tech, precision, solid state sensor.
ITT Jabsco P/N 37121-0000 (10/20psi) or
37121-0010 (20/40psi)
Name plate indicates that a 6.25 AMP Slow Blow should be used for this pump. On this boat there is just the 10 amp circuit breaker on the main distribution panel. Sounds like I should ad an inline fuse holder and fuse if I don't want the battery to go dead again the next time the pressure switch fails to open and motor stalls out.
I added the in-line fuse holder and found the 6.25 Amp fuses at West Marine, as none of the three local auto parts houses (NAPA, Carquest, and AutoZone) have them. Carquest ordered a box of 5 for me at $2.51 per fuse. I did not have to wait long as it started acting up in three days.Click Here
