BYCM1E-125 Series Molded Case Circuit Breaker 450V 3P Low Voltage MCCB Adjustable Over Voltage and Under Voltage Protective Device

Specifications of BYCM1E-125 Series Electronic Molded Case Circuit Breaker

Overview of BYCM1E-125 Series Electronic Molded Case Circuit Breaker

Key Advantages of BYCM1E-125 Series Electronic Molded Case Circuit Breaker

1.Precision voltage protection with adjustable threshold
Designed for 450V 3P applications, this molded case circuit breaker provides adjustable overvoltage and undervoltage protection to protect circuits from voltage fluctuations. It integrates advanced sensing technology to dynamically monitor voltage levels and trigger an instant trip when the deviation exceeds the user-defined limit. This feature is critical for industries such as manufacturing and data centers, where unstable voltage can damage sensitive equipment. The 3P molded case circuit breaker and low voltage circuit breaker functions ensure its compatibility with a variety of power systems, making it a versatile solution for the global market.

2.Powerful overload and short circuit protection
The BYCM1E-125 series is equipped with dual thermal magnetic releases, providing reliable circuit overload protection and fast short-circuit disconnection. Its molded case design improves arc extinguishing efficiency, reducing downtime and maintenance costs. With a rated current of 125A, it can effectively cope with high-load industrial environments while complying with international safety standards. This product is an ideal choice for three-phase circuit breakers, preventing equipment burnout and electrical fires, ensuring long-term system stability.

3.Intelligent control and real-time monitoring
BYCM1E-125 uses IoT technology to support remote diagnosis and intelligent circuit protection through a dedicated cloud platform. Users can monitor voltage, current and tripping events in real time, thereby achieving proactive maintenance and fault isolation. Its hybrid design cleverly resolves the difference between MCB and MCCB, combining the compactness of MCB with the high performance of MCCB. This makes it suitable for both residential and commercial switchboards.

4.Durable construction for harsh environments
This low voltage molded case circuit breaker features flame retardant materials and corrosion resistant housing to withstand extreme temperatures, humidity and mechanical stress. Its IP55 rated housing ensures reliable operation in dusty or humid environments such as sewage treatment plants or outdoor substations. The molded case circuit breaker design minimizes exposure of internal components, extending service life and reducing replacement frequency.

5.Universal compatibility and easy integration
The BYCM1E-125 series is designed for seamless integration into existing electrical systems. It supports plug-and-play installation and is mounted on standard DIN rails, simplifying retrofit projects. It is compatible with mainstream control systems such as Schneider Electric and Siemens, and solves three-phase imbalance problems by balancing the load on each phase. This versatility makes it the first choice for electrical contractors and OEMs seeking cost-effective, scalable protection.

Working Steps of BYCM1E-125 Series Electronic Molded Case Circuit Breaker

The BYCM1E-125 Series is a high-performance molded case circuit breaker (MCCB) designed to provide reliable low-voltage circuit protection for industrial, commercial and residential applications. As part of Baoyu Holdings' advanced product portfolio, this three-phase circuit breaker combines cutting-edge technology with adjustable overvoltage and undervoltage protection functions to ensure optimal safety and efficiency of electrical systems. Here is a detailed breakdown of how it works:
Step-by-step workflow
1. Real-time monitoring of electrical parameters
A molded case circuit breaker (MCCB) continuously monitors the three-phase current and voltage levels in a circuit. It is equipped with precision sensors that detect deviations from normal operating conditions, including overcurrent, short circuit, overvoltage, and undervoltage. This active monitoring capability ensures early detection of potential hazards, such as circuit overloads caused by excessive power consumption or equipment failure.

2. Triggering the protection mechanism

•  Overcurrent and short-circuit protection: When the current exceeds the rated value (for example, due to a motor fault or wiring defect), the thermal-magnetic release will actuate. The bimetallic strip heats up and bends in the event of an overload, while the solenoid-driven armature quickly opens the circuit in the event of a short circuit. This dual mechanism ensures a fast response, preventing equipment damage and electrical fires.
•  Overvoltage and undervoltage protection: A built-in voltage sensor compares the input voltage to an adjustable threshold. If the voltage exceeds 450V (overvoltage) or falls below a set minimum value (undervoltage), an electronic trip device initiates a shutdown. This feature protects sensitive equipment such as computers and industrial machinery from voltage instability.
  

3. Circuit interruption and fault isolation
When a fault is detected, the molded case circuit breaker quickly opens the contacts to cut off the current. The arc extinguishing chamber eliminates the arc generated during the disconnection process, minimizing collateral damage. The 3P configuration ensures that all three phases are disconnected simultaneously, preventing phase imbalance and other complications.

4. Manual reset and diagnostic feedback
After the fault is resolved, the operator can manually reset the molded case circuit breaker (MCCB) through the handle. The device also provides visual indicators (such as trip signs) to indicate the type of fault, which helps to quickly troubleshoot the fault. For advanced applications, integration with Baoyu intelligent circuit protection system can achieve remote monitoring and predictive maintenance.

Product Size of BYCM1E-125 Series Electronic Molded Case Circuit Breaker