J7MN-3P-4 Circuit Protection

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Circuit breakers are one of the most important components of an electronic system. One of the most versatile and cost-effective solutions available today is the J7MN-3P-4 circuit breaker. This device can provide reliable protection in numerous settings and can be used in any application requiring protection from over voltage and current surges. The following sections provide a comprehensive overview of the characteristics, application fields, and working principles of the J7MN-3P-4 circuit breaker.

Characteristics

The J7MN-3P-4 circuit breaker is a miniature tripping and resetting device. It has a two-position switching system and can be easily integrated into any existing and new systems. It is a lightweight, high performance circuit breaker designed to meet the industrial standards, including UL 508 and UL 1077. The device is temperature compensated, has a wide operating temperature range from -40°C to +85°C (-40°F to +185°F), and is also resistant to short-term fluctuations in line voltage.

It is RoHS compliant, UL listed, and available with a 1, 2 or 3 poles. Its main features include current settings of 16A, 32A, 63A and 65A, high interrupting capacity of 10 KA, a power consumption of 4VA, and a maximum voltage of 250V. The circuit breaker has excellent shock carrying ability and is suitable for many different protective applications.

Application Field

The J7MN-3P-4 circuit breaker is an essential protection device for many applications including industrial, commercial and residential settings. The addition of this device brings safety, reliability and increased system performance. It is used to prevent over-current, over-voltage, short circuit, and other potentially dangerous conditions from occurring. In industrial applications, the circuit breaker is used to protect electric motor circuits, energy saving devices, and other equipment from overloads and short circuits. In commercial and residential settings, it is often used as a central power source for appliances, lighting, and other electrical equipment.

The device is also used in heating and air-conditioning systems, central offices and control systems, and any other application where protection from over-voltage, short circuit or other electrical disturbances is required. Additionally, it can be used in solar photovoltaic systems, solar thermal systems, emergency light systems, and other solar energy applications.

Working Principle

The J7MN-3P-4 circuit breaker is designed to ensure safe, reliable, and short circuit free operation. The device uses the principles of the magnetic actuation and disconnection of the circuit. The device has an electromagnet, which is activated by an input current, when this current is close to the rated continuous current of the device, the magnet actuates a trip lever, which disconnects or opens the circuit. Then the handle or reset switch of the device is used to manually reset the device.

The device has a set of three auto-restart control pins and an auto reset protection circuit. The device has a high breaking capacity and is able to determine an exact tripping vs. resetting time easily. The device is able to identify small voltage drops and automatically disconnect the circuit. It has an adjustable time delay which allows adjustment of the trip time. Additionally, the device has a thermal fuse safety function, which prevents it from drawing more current than the rated current of the breaker.

In conclusion, the J7MN-3P-4 circuit breaker is designed to provide protection to a wide range of applications. Its wide operating temperature range, high interrupting capacity, advanced control system, and excellent shock carrying ability makes it an ideal choice for many applications. Its simple installation and reliability make it a popular and cost-effective solution for any electrical system.

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