LELB1-1REC4-37331-15

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Circuit breakers are essential components of electrical systems that provide short circuit protection, overload protection, and maintenance isolation. The LELB1-1REC4-37331-15 is a four-pole circuit breaker from Schneider Electric.

Overview

The LELB1-1REC4-37331-15 four-pole circuit breaker is a low-voltage, drawout-type circuit breaker designed for medium-voltage applications. It has maximum switching capacity of 40A and is rated up to three and a half times nominal load current. It comes with two manually operated trip units for short circuit protection. Trip units are available in three different trip curves: Type F (Very Inverse Curve), Type D (Inverse Curve) and Type E (Long Delay Curve).

The integrated overload protection extends the life of the motor by avoiding regular restart after overloads. The circuit breaker also features modular design, which allows user to add or remove various parts to meet the specific application requirements.

Application

Typical applications of the LELB1-1REC4-37331-15 four-pole circuit breaker include:

• Industrial equipment
• Commercial and residential buildings
• High-voltage electrical systems
• High-rise buildings
• Manufacturing plants
• Military facilities
• Public Places

Working Principle

The LELB1-1REC4-37331-15 four-pole circuit breaker works on the principle of interrupting the electrical current when it exceeds its set parameters. The overload or short circuit protection is provided by two trips associated with the circuit breaker.

The first trip, which is connected to the coil, trips the circuit breaker when an overload or short circuit is detected. When the trip occurs, the circuit breaker contacts open, disconnecting the circuit. The second trip is an adjustable trip which provides the user with adjustable trip settings to meet the specific application requirements.

Conclusion

The LELB1-1REC4-37331-15 four-pole circuit breaker is designed for medium-voltage applications. It provides overload and short circuit protection along with modular design to meet the application requirements. The circuit breaker works on the principle of interrupting the current when it exceeds its set parameters.

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