The biggest difference between the two is that the self-healing fuse can be self-recovered. Of course, there are some other differences between the two products.
Leakage Current: When overloaded, the self-healing fuse changes from a low-impedance state to a high-impedance state, which is often referred to as "tripping." Limit the current to a leak level for protection purposes. The leakage current can increase from about one hundred milliamps at rated voltage to several hundred milliamperes at lower voltages. However, in the case of an overloaded fuse, the blown fuse blows to completely cut off the current and the leakage current generated by the open circuit is "0".
Breaking current: The maximum short-circuit current that the fuse is rated at the rated voltage. This fault current is the maximum current the device can withstand. Self-resetting the fuse will not actually cut the current (see “Leakage Current” above.) The standard self-healing fuse has a short-circuit current rating of 40A. However, in order to respond to overload, the fuse blower must actually cut off the current. The rated breaking current ranges from a few hundred amps to 10,000 amps at rated voltage.
Rated current: The rated working current of the resettable fuse is up to 11A, but the maximum rated operating current of the fuse may exceed 20A.
Rated voltage: The rated voltage of a conventional self-healing fuse does not exceed 60V, but the rated voltage of a blown fuse can reach 600V.
Resistance: As can be seen from the product specification, the self-healing fuse has twice the resistance (sometimes higher) of the blown fuse in the case of a similar rating.
Rated temperature: The normal upper limit of the self-resetting fuse is generally 85°, while the maximum operating temperature of the fuse is 125°C. Both devices have their rated temperature down when operating above 20°C.
Time-current characteristics: By comparing the time-current curves of the self-healing fuses and fuses, it can be seen that the self-recovering fuse response time is equivalent to the time delay of the Slo-Blo® fuse.
Agency Approvals: Self-resetting fuses have been certified by Underwriters Laboratories, Inc. component projects to meet UL Thermistor Resistance Standard 1434. The device also passed the CSA component acceptance project certification. Thanks to certifications such as TUV and VDE, the self-healing fuse can be said to have reached IEC Standard 730-1 (Automatic Electronic Control). Fused fuse certification includes Underwriters Laboratories' component project certification and CSA's component acceptance program. In addition to this, many fuses can provide complete "Listing" certification according to the new fuse supplement standard UL 248-14.
