Designed for reliability, the Cr123C Series thermal overload heater element is rated for 13.4 to 250 amps with a maximum fuse rating of 50. The open version is rated from 15.10 to 17.00 amps, and the enclosed version ranges from 14.70 to 16.50 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.