The 518E-12 is recommended for high vibration applications where nuisance shutdowns typically occur due to higher than normal vibration (i.e. wood chippers). The 518E-12 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 trips the 518E-12. Energize to latch. Manual indicating reset type. 12 volt only. Contacts 10 amps 24V. 14 amp fuse.