QLB-073-11B3N-3BA

Series:	QLB
Part Status:	Active
Lead Free Status / RoHS Status:	--
Breaker Type:	Thermal
Moisture Sensitivity Level (MSL):	--
Current Rating:	7A
Voltage Rating - AC:	250V
Voltage Rating - DC:	32V
Number of Poles:	1
Actuator Type:	Push to Reset
Illumination:	--
Illumination Voltage (Nominal):	--
Mounting Type:	Panel Mount

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Introduction to Circuit Breakers

Circuit breakers are a form of electrical protection used to protect wiring and other electrical equipment from damage due to overcurrent or overload. They operate like a switch and are designed to automatically disconnect a circuit when dangerous levels of current flow through it. The circuit breaker is a common device found in most homes and commercial buildings, and they are a critical component in any electrical system.

QLB-073-11B3N-3BA Application Field and Working Principle

The QLB-073-11B3N-3BA is a three-pole, photo-sensitive miniature, thermal-magnetic circuit breaker. This type of circuit breaker is widely used in motor control, industrial equipment and power distribution. It is designed to provide reliable protection from both thermal and magnetic actions and is capable of interrupting the current with class 10 over-current breaking performance.The operation of the circuit breaker is based on two types of protection: thermal and magnetic. The thermal protection is based on the temperature rise caused by the current flowing through the breaker. As the temperature rises, a bimetallic strip bends and eventually releases the contacts. The magnetic protection is based on an electromagnetic force generated by the current flow, which acts to pull the contacts apart and trip the breaker.The QLB-073-11B3N-3BA has two adjustable overload trip settings that can be adjusted depending on the application. These can be adjusted to either trip faster or slower depending on the application. The circuit breaker is designed to be tamper proof and can only be adjusted by qualified personnel.The QLB-073-11B3N-3BA is a UL-listed and CSA-approved circuit breaker that is suitable for use in both North American and international markets. It has a voltage rating of 120/240V and a current rating of 3 amps, making it suitable for use in most residential and commercial applications. It is also UL-classified for arc-fault circuit interruption.

Conclusion

The QLB-073-11B3N-3BA is an effective and reliable circuit breaker that can be used in a variety of residential and commercial applications. It is capable of providing protection from both thermal and magnetic overloads, and is both UL-listed and CSA-approved. This makes it an ideal choice for use in both North American and international markets.

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