Part of the Cr123C Series, this thermal overload heater element is designed to handle various load conditions. It's rated for 11.9 to 540 amps and has a maximum fuse rating of 45. The open version boasts an amp rating of 13.10 to 270.00, while the enclosed version is rated at 12.70 to 270.00 amps. It is suitable for NEMA Size 00, 0, 1, 2, and 5, with specific amp ratings for each. This element is compatible with thermal overload relays, magnetic motor starters, and motor controls.