IURK11-38965-20 Circuit Protection

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Circuit breakers are essential components in electrical systems which automatically detect fault conditions and disconnect the offending circuit to prevent renewable damage or potential catastrophe. The IURK11-38965-20 is a miniature circuit breaker designed to protect low voltage electrical systems. It is intended for residential and industrial applications.

Specifications and Design

The IURK11-38965-20 is a single pole, 21A circuit breaker that measures 22.5 mm by 75.0 mm, which makes it ideal for applications where space saving is important. It features an adjustable instantaneous, short-term overcurrent release with a range of 0.2x to 3.0x, and a breaking capacity of 10kA. It is designed to prevent thermal and magnetic overload and short-circuit current at open and closed contacts. The circuit breaker also has a power-static contact mechanism which ensures positive contact indications.

Installation

The IURK11-38965-20 is easy to install. It requires a 3-wire connection and requires two live leads, typically found in the main breaker box. The wall or ceiling must be able to support the weight of the breaker. The circuit breaker should be placed in a way that does not interfere with any other electrical components and should be kept away from water and heat sources. The IURK11-38965-20 is designed to be mounted horizontally, with an external temperature sensing probe if needed.

Operation

The IURK11-38965-20 is designed to provide protection from hazardous electrical conditions. It detects overcurrents and will automatically open to disconnect the power supply and prevent damage to the electrical system. The circuit breaker has a power-static contact mechanism so that it will remember the current setting after tripping or resetting the breaker. This ensures that the breaker will trip at the same levels for future use and will not require resetting after use.

Working Principle

The IURK11-38965-20 circuit breaker operates by detecting abnormal current levels and automatically disconnecting the circuit in order to protect the electrical system from damage. When the current rises above the pre-set level, the thermal motor is activated. This, in turn, causes the breaker to trip, which interrupts the circuit and prevents further damage. If the overload is a short-circuit, the magnetic field will be activated and the breaker will trip as well. If a low voltage condition is detected, the power-static contact mechanism will break the circuit and will remain open until the power is reset.

Safety

The IURK11-38965-20 circuit breaker is designed to provide a safe environment for both the user and the electrical system. It is important to note that the circuit breaker does not provide complete protection from hazardous conditions. It is still important to ensure that all wiring is up to code and that the circuit breaker is properly installed in accordance with local safety codes.

Conclusion

The IURK11-38965-20 is a miniature circuit breaker designed for residential and industrial applications which automatically detects fault conditions and disconnects the offending circuit to prevent further damage or potential catastrophe. It is easy to install and has an adjustable instantaneous, short-term overcurrent release and a power-static contact mechanism to ensure positive contact indications. However, it is important to remember that the circuit breaker does not provide complete protection and must be installed in accordance with local safety codes.

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