R21-0F..S01010788

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Circuit Breakers are one of the most important safety mechanisms in any electrical power system. Their purpose is to protect against accidental contact between electrical conductors, or to interrupt current flow in the event of an overload. The R21-0F..S01010788 is a type of circuit breaker specifically designed for medium voltage applications.

What Is The R21-0F..S01010788?

The R21-0F..S01010788 is a medium voltage circuit breaker used to protect circuits that require unattended operation and short circuit protection. The circuit breaker is enclosed in a durable and corrosion resistant steel casing and is suitable for applications in hazardous locations. It comes in two forms, the R21-OF..S01010788, which is a fixed point circuit breaker, and the R21-RF..S01010788, which is a draw-out circuit breaker. Both types share the same design and features, including a Shunt Trip Unit, Pressure Relief Device, and Thermal Trip Unit.

Applications For The R21-0F..S01010788

The R21-0F..S01010788 is designed for use in medium voltage applications, such as main switchboards, distribution switchgear, and motor control centers. It is suitable for operating frequencies of 50 Hz or 60 Hz and can be used in industrial, commercial, or residential applications. The circuit breaker can be used in zone-1 (indoors) and zone-2 (outdoors) hazardous locations, making it suitable for use in hazardous areas where flammable substances are present.

R21-0F..S01010788 Working Principle

The R21-0F..S01010788 operates on a thermal-magnetic operating principle that triggers the circuit breaker to open automatically when the current in the system exceeds a certain level. The circuit breaker is designed to work with both AC and DC current, and can be used in systems with a voltage range of 0.4kV – 6.6kV. It is rated for currents from 10A – 2500A.

When the current reaches a level that exceeds the circuit breaker’s rating, the main contact opens and an arrestor deploys, creating an arc. This arc extinguishes itself within a few milliseconds, breaking the current away from the system. The Thermal Trip Unit then takes over and trips the circuit breaker, opening the main contacts and preventing further overload of the system.

Benefits Of The R21-0F..S01010788

The R21-0F..S01010788 has a number of advantages over other types of medium voltage circuit breakers. These include:

• Reliable operation even under extreme conditions.
• The ability to withstand temperature fluctuations.
• A compact design that makes it easy to install in small spaces.
• High wearing and resistance to corrosion.
• A design that negates the need for regular servicing.

The R21-0F..S01010788 is a versatile and reliable circuit breaker that is suitable for many medium voltage applications. It is designed for use in hazardous locations and offers superior protection against overloads and short circuits. The circuit breaker is also designed for easy installation and maintenance, making it ideal for industrial, commercial, and residential applications.

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