High Current Thermal Fuse
MH7-1 
MH7-1 is a very tough, high-operating-temperature epoxy mold compound for harsh environment applications.
MH20-2000 Very tough, high operating temperature epoxy mold compound for power resistors, switches, fuses, actuators, and explosion proof housings 
MH20-2000 is a very tough epoxy mold
compound with excellent high temperature resistance.
It is used in applications that require thermoset
epoxies instead of thermoplastics because of higher
performance requirements.