Mitsubishi NF800-SEWL Instruction Manual

Mitsubishi NF800-SEWL Breaker manual cover
Pages 1
Year 2015
Language(s)
English en

Mitsubishi NF800-SEWL Breaker Specification

The Mitsubishi NF800-SEWL Breaker is a high-performance circuit breaker engineered to provide reliable protection and control in electrical systems. It is designed for industrial applications, ensuring safety and efficiency in managing electrical loads. The NF800-SEWL is part of Mitsubishi's advanced series of circuit breakers, known for their durability and innovative technology.

This breaker accommodates a rated current of up to 800 amperes, making it suitable for various heavy-duty applications. It operates effectively within a voltage range of up to 690 volts AC, catering to diverse power distribution needs. The NF800-SEWL is equipped with an electronic trip unit that offers precise and adjustable protection settings, enhancing its adaptability to different operational requirements.

Furthermore, the breaker is designed with a compact and robust frame that facilitates easy installation and maintenance, optimizing space utilization in control panels. It features a high breaking capacity, ensuring dependable operation under fault conditions, thus minimizing downtime and enhancing system reliability. The NF800-SEWL complies with international standards, underscoring Mitsubishi's commitment to safety and quality.

In addition to its technical prowess, the NF800-SEWL breaker incorporates advanced safety features, such as overload and short-circuit protection, which safeguard electrical systems from potential hazards. Its intelligent design allows for seamless integration with modern monitoring and control systems, providing users with real-time data and diagnostics for proactive maintenance and system management. Overall, the Mitsubishi NF800-SEWL Breaker stands out as a robust, efficient, and versatile solution for contemporary industrial electrical requirements.

Mitsubishi NF800-SEWL Breaker F.A.Q.

How can I reset the Mitsubishi NF800-SEWL breaker after a trip?

To reset the NF800-SEWL breaker after a trip, ensure the cause of the trip is resolved. Then, move the breaker handle to the 'OFF' position and back to the 'ON' position.

What are the steps to perform regular maintenance on the NF800-SEWL breaker?

Regular maintenance involves visual inspections for damage, checking for loose connections, cleaning dust and debris, and testing the breaker operation periodically.

How do I troubleshoot a Mitsubishi NF800-SEWL breaker that does not stay on?

First, check for any overload conditions or short circuits. Ensure all connections are secure and inspect for any signs of damage. If the problem persists, conduct a detailed circuit analysis.

What are some common causes of tripping in the NF800-SEWL breaker?

Common causes include overloads, short circuits, ground faults, and incorrect breaker settings. Verify electrical loads and settings to prevent unnecessary trips.

How can I verify the correct installation of the NF800-SEWL breaker?

Check that the breaker is securely mounted, all electrical connections are tightened to specified torques, and the breaker handle operates smoothly. Ensure all settings match the application requirements.

What is the recommended procedure for adjusting the settings on the NF800-SEWL breaker?

Refer to the breaker manual for guidance on adjusting the settings. Use the adjustment dials or switches to set the desired trip current and time delay based on your specific application needs.

Can the NF800-SEWL breaker be used in outdoor installations?

The NF800-SEWL breaker is generally designed for indoor use. If outdoor installation is necessary, ensure it is housed in a suitable enclosure with appropriate environmental protection.

How should I clean the Mitsubishi NF800-SEWL breaker?

Use a dry, soft cloth to clean the exterior of the breaker. Avoid using any liquids, and ensure the power is off before cleaning to prevent electric shock.

What safety precautions should be taken when handling the NF800-SEWL breaker?

Always turn off power before performing any work. Use insulated tools, wear appropriate personal protective equipment, and follow lockout/tagout procedures to ensure safety.

How can I test the operation of the NF800-SEWL breaker?

Perform a manual operation test by switching the breaker on and off. For a more thorough test, use a breaker test set to simulate overload and short circuit conditions, ensuring it trips as expected.