R21-0F..S01005363

Series:	*
Part Status:	Active
Lead Free Status / RoHS Status:	--
Moisture Sensitivity Level (MSL):	--

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Introduction

Circuit breakers are an essential component in any electrical power system. They are used to interrupt and protect circuits from potentially damaging current surges. R21-0F..S01005363 is a common type of circuit breaker, and this article will discuss its application fields and working principles.

Application Field

R21-0F..S01005363 is widely used in residential and commercial buildings, as well as in industrial and utility settings. This breaker is designed to handle a variety of low voltage applications, including HVAC, lighting, motors, and other electrical devices. It is a single-pole breaker, meaning it can break and make only one side of the AC circuit. This makes it particularly well-suited for use in 240V, 110V and 277V AC power distribution circuits. It is also available in two versions - with a ground fault circuit interrupter (GFCI) for added protection, and without a GFCI. The small size of the R21-0F..S01005363 makes it an ideal choice for residential and small commercial locations, where space is often at a premium. It can be easily installed in cramped junction boxes or panel boards.

Working Principle

The R21-0F..S01005363 circuit breaker is designed to make and break electrical circuits when an overload or short circuit occurs. It consists of two parts - the trip lever assembly, and the trip unit. The trip lever assembly is made of a switch and a spring-loaded plunger. When an overload or short circuit occurs, the plunger is pulled inward by the increased current, and the switch opens to break the circuit. The trip unit contains a heating element which senses the current in the circuit. If the current is too high, it causes the heating element to increase in temperature, which then activates the trip lever to open the circuit. This is known as a thermal-magnetic trip. The trip lever is also designed to reset automatically if the current reduces to a safe level.

Conclusion

The R21-0F..S01005363 is a compact and reliable circuit breaker, designed to protect circuits from potentially damaging overloads and short circuits. Its small size and single-pole design make it an ideal choice for residential and small commercial applications. Its thermal-magnetic trip quickly detects and breaks excessive current, and then reset itself when the current reduces to a safe level.

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