Designed for reliability, the Cr123C Series thermal overload heater element is rated for 2.89 to 3.05 amps with a maximum fuse rating of 18. The open version is rated from 2.99 to 3.15 amps, and the enclosed version ranges from 2.95 to 3.12 amps. It is suitable for NEMA Size 00, 0, 1, and 2, with different amp ratings for each. This element is compatible with thermal overload relays, magnetic motor starters, and motor controls.