S505-1.25-R

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Fuses are essential components in electrical and electronic systems which work in high currents and voltages. The type of fuses used in these systems often depends on the specific application and environment. The S505-1.25-R is one such type of fuse often used in industrial and commercial applications. It is a time-delay circuit breaker with particular characteristics which make it appropriate for certain applications.

The S505-1.25-R fuse is made for a nominal voltage of 600V and inoperative voltage of up to 690V. It also has an interrupting rating of 200A when operated at 125V and is UL (Underwriters Laboratories Inc. listed) and CSA (Canadian Standards Association) approved. The fuse has a 1/4-inch (6.4 mm) diameter and a 1-1/4-inch (32 mm) length thread mount that can be directly screwed to the specific device or terminal.

Additionally, the fuse has an external and internal structure built from resistant hard plastic and brass. The internal structure features corrosion-resistant contacts for stable electric connections and a dust and water-proof treatment for protection of the circuit-breaker from external conditions. A heavy-duty, high-conductivity emulsion-filled plug-in base helps reduce arcing of the output contacts.

Given the physical characteristics, the S505-1.25-R fuses are typically used in industrial and commercial applications such as electrical switching and motor control, lighting and air conditioning systems, consumer electronics, pumps, and industrial robots. This type of fuse works by interrupting the flow of current once the predetermined current i.e. the “rated current” has been exceeded. When too much current flows, it creates heat and causes the fuse wire (or filament) to melt or “blow.” This produces an open circuit, thus breaking the flow of electricity.

Additionally, the S505-1.25-R fuse incorporates a time-delay characteristic which helps to protect against fluctuations in the power supply. This means that the fuse will break the circuit only after a few cycles of malfunctions, thus avoiding unduly breaking the continuous power, even in circuit issues such as motor start-up, due to high inrush currents. This is critical because these types of current spikes are much higher than the normal operating current and could damage the system if the fuse was not equipped with this protection mechanism.

Additionally, the design of the fuse helps minimize the risk of fire when it does eventually blow. The construction of the S505-1.25-R fuse is designed with safety in mind. It has two independent connections: one to ground, and the other to the line terminal, which eliminates the possibility of a spark inside the fuse.

To summarize, the S505-1.25-R is a time-delay fuse-type circuit breaker that is UL and CSA-approved, and designed specifically for industrial and commercial applications. The fuse works by interrupting the flow of current to the device once the predetermined current has been exceeded. Its time-delay characteristic triggers only after cycling malfunctions, avoiding circuit breakers in cases of high inrush currents. The design of the fuse is also made for safety, having two independent connections which eliminate potential sparks within the system.

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