3CU30L

Circuit breakers are an integral part of any electrical system. They are designed to protect the system from overloads by interrupting the flow of power when it exceeds a certain threshold. The 3CU30L is one of the most common types of circuit breakers, and is used in many applications. This article will discuss the 3CU30L circuit breaker in detail, including its application field and working principle.

Application Field

The 3CU30L is a three-pole, fully insulated circuit breaker that is ideal for use in circuits with a rated current of up to 30A. It is commonly used in residential, commercial and industrial applications. The 3CU30L is designed for the protection of the entire electrical system, including the main power supply, appliances, and individual circuits. It operates at a rated frequency of 50/60 Hz, and can be reset manually in the event of an overload.

The 3CU30L is designed for use in both indoor and outdoor environments. It is highly durable and resistant to moisture and corrosive environments. It is also designed for operation in temperatures up to +40C. The 3CU30L is certified by major international standards, such as IEC60947-2 and VDE0660.

Working Principle

The 3CU30L is a thermal-magnetic circuit breaker. This means that it uses both a thermal element and a magnetic element to detect and interrupt an overload. The thermal element is a bimetallic strip that expands when it reaches a certain temperature due to the current passing through it. This expansion causes the strip to bend, which releases a lever that opens the circuit. The magnetic element is an electromagnet that responds to high current by releasing a lever that opens the circuit. This dual-protection mechanism ensures that the circuit is protected from both overloads and short circuits.

The 3CU30L has two reset methods: manual and automatic. The manual reset requires the user to manually flip a switch to reset the circuit. The automatic reset mechanism uses a spring-and-weight mechanism that automatically resets the circuit after the current flow has returned to normal. This automatic reset function makes the 3CU30L an ideal choice for a variety of applications.

Conclusion

In summary, the 3CU30L is a three-pole, fully insulated circuit breaker that is ideal for use in circuits with a rated current of up to 30A. It is commonly used in residential, commercial, and industrial applications. The 3CU30L is a thermal-magnetic circuit breaker that uses both a thermal element and a magnetic element to detect and interrupt an overload. It also has two reset methods: manual and automatic. The 3CU30L is certified by major international standards and is designed for use in both indoor and outdoor environments. Overall, the 3CU30L is a reliable and versatile circuit breaker that is suitable for a wide range of applications.