CH223DNU

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Fuseholders: CH223DNU Application Field and Working Principle

Fuseholders are an essential part of any electrical system and CH223DNU is one of the most common types used today. It is a general-purpose fuseholder designed to protect current-carrying circuits from over-current damage during normal operation or during a fault condition. It is a reliable, cost-effective solution for a wide range of applications, from residential to commercial use. The CH223DNU is UL recognized for branch circuit protection, has dual breakers blocking out both AC and DC currents, and includes a spring contact, providing effective and secure fuse insertion and removal. It is easy to install and requires minimal maintenance.

Application Field

The CH223DNU is designed for medium-duty and high-duty requirements in commercial and residential electrical applications. It is mainly used as a circuit breaker for AC and DC circuits, but it can also be employed as a receptacle, a junction box, or a low-voltage control. This versatile fuseholder is often used for protecting circuits from over-current or short-circuiting issues. It is a great choice for applications that require higher fuse current ratings and higher voltage ratings, such as:

• Power Supplies
• Electrical Motors
• Lighting Fixtures
• Circuit Boards and Industrial Controls
• Medical Devices

Working Principle

The CH223DNU is an automatic, spring-loaded fuseholder that provides a safe and easy way to protect circuits from over-current or short-circuiting issues. It is based on the electromechanical principle known as “Push-in Switch”, which uses a metal spring to hold the electrical contacts firmly together. The spring holds the contacts firmly together until a specified current exceeds the current rating of the fuseholder.

When the specified current exceeds the current rating, the metal spring releases the electrical contacts and breaks the circuit automatically. This cuts off the electrical power and prevents the circuit from becoming damaged due to over-current. This process is known as “automatic circuit protection” and this is how the CH223DNU protects circuits from over-current or short-circuiting issues.

The CH223DNU is rated to handle up to 250 V and 14 A. It also includes a pair of fused contacts that provide additional safety and protection. This fuseholder is designed to provide reliable performance and is an economical solution for a variety of applications.

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