moldedcase

Molded case refers to a type of electrical enclosure, most commonly found in circuit breakers and other protective devices. These cases are manufactured by shaping plastic materials under heat and pressure, a process known as molding. This method allows for precise and consistent production of complex shapes, making them ideal for housing electrical components.

The primary function of a molded case is to provide robust insulation and physical protection for the internal mechanisms. They protect against environmental factors such as dust, moisture, and impact, as well as preventing accidental contact with live electrical parts. The material used is typically a durable thermosetting plastic, chosen for its electrical insulating properties, flame retardancy, and resistance to mechanical stress.

Molded case circuit breakers (MCCBs) are a prominent example. Their molded case encloses the tripping mechanism, contacts, and arc extinction chambers. The compact and standardized design of molded cases facilitates easy installation and integration into electrical panels. The materials and manufacturing process contribute to the overall reliability and safety of the electrical protection devices they contain.