Includes 5 pieces of N4F and N6F thermosafeties TF. Key features - Temperature range 127C to 139C with 127C cutoff on the N4F model at 1A - Black square temperature switches - Designed for up to 250V and 1A operation - 5 units in a single set for convenient replacement or multi-point protection Benefits - Provides reliable thermal protection to prevent overheating in 250V, 1A circuits - Precise cutoff points (127C and 139C) support predictable shutdown performance - Compact square form factor for easy integration into OEM designs and repairs Applications - Mains-powered devices with heating elements to prevent overheating - 230V/110V power supplies and chargers requiring thermal protection - OEM electronics and assemblies that need discrete 127C/139C cutoffs These N4F and N6F TF thermosafeties offer dependable, standards-based protection in a compact, black square package suitable for a range of 250V, 1A applications.