AC 3 Pole MCCB 250A Molded Case Circuit Breaker YCM8YV Series

CNC Electric YCM8YV Series AC 50Hz Electronic Plastic MCCB (Molded Case Circuit Breaker) is a high-performance electrical protection device engineered for robust AC circuit protection in industrial, commercial, and heavy-duty power distribution systems. Designed and manufactured in compliance with IEC60947-2 standards, this molded case circuit breaker delivers reliable and precise protection against overload, short circuit, over-voltage, under-voltage, and phase loss conditions in AC 50Hz electrical networks up to 400 V and rated currents up to 800 A making it ideal for a wide range of applications.

 Superior Protection and Electrical Safety

The YCM8YV MCCB breaker is engineered as a comprehensive protective device that goes beyond simple circuit interruption:.

• Overload Protection: Using an advanced thermal trip mechanism, the MCCB senses sustained over-current conditions and safely interrupts the circuit to protect conductors and equipment from overheating damage.
• Instant Short-Circuit Protection: Featuring a magnetic trip response, it detects dangerous short-circuit faults and disconnects the circuit in milliseconds — preventing severe electrical faults and reducing the risk of fire or equipment failure.
• Voltage Anomaly Safeguards: Designed to guard against both over-voltage and under-voltage events, the YCM8YV protects sensitive electrical equipment from unstable supply conditions that can cause motor stress or operational disruption.
• Phase Loss Protection: In three-phase systems, the breaker detects phase loss scenarios and protects motors and loads from running under imbalance conditions, which can lead to overheating.

 Flexible and Reliable Performance

What sets the YCM8YV Series MCCB apart is its blend of precision and adaptability:

• Electronic Trip Unit: The breaker’s electronic control delivers accurate and stable tripping performance that ensures protection without nuisance trips — ideal for systems with variable loads or frequent motor starts.
• Wide Application Range: Suitable for main power distribution boards, feeders, control panels, motor circuits, and switchgear assemblies in manufacturing plants, commercial buildings, renewable energy farms, and data centers.
• Manual Switching Capability: Beyond automatic protection, the MCCB also allows manual ON/OFF operation for maintenance, emergency shutdowns, and commissioning.

 Durability & Build Quality

Crafted with a high-grade electronic plastic casing, the YCM8YV MCCB is rugged, lightweight, and resistant to environmental stress factors such as vibration, temperature fluctuations, and mechanical wear — contributing to long-term reliability and lower maintenance costs.

Standards and Compliance

Manufactured to meet international quality and safety benchmarks (IEC60947-2), the YCM8YV Series ensures consistent electrical safety performance, compatibility with global electrical systems, and peace of mind for installers, engineers, and end-users alike.

 Key Benefits at a Glance

• Robust protection against overload, short circuit, and voltage irregularities
• Compliance with global safety standard IEC60947-2
• Advanced electronic trip unit for precise fault interruption
• Manual ON/OFF operation for maintenance and safety
• Ideal for industrial, commercial, and heavy-duty power distribution
• Compact, durable, and easy-to-install design