FA4H30

FA4H30 is a special limit fuse designed for the AC control circuits. It mainly provides fast fuse action in order to protect the equipment from the possible over-current. Its rated current is 4A, the rated voltage is 300V and it also satisfies the UL 248-14 standard. This fuse type creates an excellent connection between power supply and equipment for a given rated power.

The FA4H30 fuse is typically used in commercial and residential AC control circuits such as air conditioning, security systems, home automation, motor control, lighting, and communication systems, among others. It is important to mention that FA4H30 fuses are designed for non-rectified AC circuits and control circuits operating at 300V or less.

The FA4H30 fuse works in a fundamental way. It projects a specific level of current through its internal load. When the current passes over this level, a temperature is generated within the fuse. This generated temperature increases the electrical resistance of the fuse, and as a result, the current passing reaches a very low level, and the overload of the equipment is prevented.

When talking about extended operating time, a characteristic of the FA4H30 fuses is that the life of the fuse slowly decreases as the electrical current value increases. This design allows the fuse to protect the equipment from long-term overloads, something not present in other fuse designs. Also, FA4H30 fuses present a characteristic known as fusing action, that is, the breaking of the circuit and the interruption of the electric current, and this can be done in an extremely short time.

In terms of safety, it is important to highlight that the FA4H30 fuses are compliant with the UL 248-14 standard. This ensures the electrical safety and compliance with safety regulations. Additionally, FA4H30 fuses have a small size that is light and space-saving. They only occupy half the space of traditional fuses and they also allow an easy installation.

The FA4H30 fuse presents a reliable, fast and cost-effective protection circuit in special AC control circuits. Both its safety features and its wide field of applications make it one of the most in-demand fuses that the market offers. Its ability to detect overloads and to act quickly allows it to effectively protect the equipment from a possible overload.