NEco designs and manufacturers various Thermal Relays and Fuses in the configuration required by our customer. Known as a ‘one shot SPST’, NEco’s Thermal Relays and Fuses are hermetically sealed devices available in either the open or closed configuration. Our products operate over a wide temperature range with firing times as low as 2 milliseconds and switch rating from 1.5 to 25 amps. NEco’s Thermal Relays perform at a reliability rate of 99.9995%. The clear glass case allows visibility to determine the state of the switch/fuse.