Item Description
The NEC SCHOTT SEFUSE™ SF type is a thermal cutoff based on a one-shot operation principle and prevents electrical appliances from catching fire due to overheating. It uses an organic thermo-sensitive material inside a metal case and is able to operate in electric circuits with large currents.
The SF type contains a sliding contact, two springs and a thermal pellet inside a metal case. Under normal temperatures, the sliding contact touches the top of the lead. The current flows through the sliding contact and the metal case to the other lead and the electrical circuit is closed. When the ambient temperature reaches a critical point, the thermal pellet melts and the springs move the sliding contact away, resulting in an interruption of the electrical flow.
The SF type thermal cutoff has the following advantages:
Remarkable sensitivity to temperature rise due to its shape and small size
High reliability and accuracy due to resin-seal
Appropriate for electric flows with large currents
Environmentally-friendly product complying with the Directive on Waste Electrical and Electronic Equipment Directive (WEEE), and the Directive on the Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment (RoHS)
It is used for a great variety of applications such as:
Home Appliances (e.g. irons, coffee makers, rice cookers, bread makers, toasters, refrigerators)
Comfort Conditioning Appliances (e.g. air conditioners, fans, humidifiers, heaters)
Personal Care Appliances (e.g. hair dryers, hair curlers, hair setters, razors)
Business Appliances (copiers, laser printers, facsimiles, power strips)
Electrical Components (e.g. transformers, solenoids, AC adopters)