004725126

004725126 Application Field and Working Principle

004725126 is an economical, tip-sensitive thermoplastic dual-melting circuit breaker, also known as thermal fuse. It is usually used as the over-heat protector in the household electrical equipment applications. This thermal fuse is composed of two thermally different metal components that are soldered or directly crimped. As the temperature of the protected circuit increases, the metal component with lower melting point melts and breaks the electrical circuit, thus cutting off the current and protecting the circuit.

Technical Specifications

• Temperature range: -20℃ to 125℃
• Voltage rating: 250V
• Current ratings range: 0A to 15A
• Interrupting rating: 10A
• Insulation class: Class F

Processing and Application Conditions

When using 004725126, the ambient temperature should be within the range of 0℃ to 70℃ and the relative humidity should be lower than 95%. The 004725126 should be used below its rated current and the rated voltage. In addition, the thermal fuse should not be attached to a metal surface. If the thermal fuse is required to re-fuse after it trips, then the application should not exceed its rated current.

Working Principle

The working principle of the 004725126 is simple and efficient. The dual-melting circuit breaker has two different melting points metals that are connected in series. When the ambient temperature exceeds its rated value, the first metal melts and disconnects the electrical connection between the two metals. This interrupts the electrical circuit and protects the device from further damage.

The 004725126 is an economical solution that provides reliable protection against over heating and overcurrent in a wide variety of applications. It is available in a variety of current ratings, and has a wide operating temperature range. The 004725126 provides protection against potentially dangerous thermal runaway conditions in a variety of electrical appliances such as dehumidifiers, microwaves, and refrigerators.