The Murphy Tattletale Magnetic Switch 12V for High Vibration 518E-12 is the nerve center that translates Swichgage contact operations into decisions and operate the alarm or shutdown device. It allows for Swichgage and/or N.C. contacts to be wired "Closed Loop" (in series). Any contact open or Swichgage contact close in the circuit shunt trips the 518E-12. Contacts are rated for 10 amps 12V. 14 amp fuse is included. This model features a weather resistant case with screw terminals for ease of customer hookup and manual reset type. For distributor ignition or diesel engines. This 518E-12 is the sames as 518APH but recommended for high vibration application where nuisance shutdowns typically occur due to higher than normal vibrations (ie. wood chippers). 12 volt only.
Tattletale Annunciator indicates which monitored function failed leading to the alarm or shutdown whereas magnetic switches do not. Magnetic switches operate basically as a latching relay.