For robust thermal overload protection, the Cr123C Series heater element is an excellent choice. It is rated for 3.36 to 3.54 amps with a maximum fuse rating of 27. In the open version, it’s rated from 3.52 to 3.70 amps, and in the enclosed version, it’s rated from 3.48 to 3.66 amps. This element is compatible with NEMA Size 00, 0, 1, 2, and 5, each with specific amp ratings. It’s ideal for use with thermal overload relays, magnetic motor starters, and motor controls.