The 100A 3-Phase MCCB is a robust industrial-grade circuit breaker designed to provide comprehensive protection for power distribution systems and motor circuits. Engineered for AC 50/60Hz networks with rated voltages up to 690V, this breaker excels in protecting downstream equipment against overloads, short circuits, and undervoltage conditions.

With its compact frame and high-strength thermoset housing, this MCCB is the standard choice for industrial control panels, commercial building distribution boards, and OEM machinery. It combines high-performance arc extinguishing technology with a reliable mechanical trip system to ensure the safety of your electrical infrastructure.

• High Breaking Capacity (Icu): Designed to safely interrupt high fault currents, preventing catastrophic damage to the switchboard and connected cables during a short circuit.

• Thermal-Magnetic Trip Unit: Features a reliable fixed or adjustable thermal element for overload protection and an instantaneous magnetic element for rapid short-circuit response.

• Optimized Arc Extinguishing: Built with advanced arc chutes that quickly cool and dissipate ionized gases, significantly extending the electrical life of the contacts.

• Double-Break Contact System: The innovative contact design reduces the electromagnetic force during a fault, ensuring faster opening times and superior protection coordination.

• Environmentally Rugged: The enclosure is made of high-grade, flame-retardant material capable of operating in temperatures from -5°C to +40°C (and up to +70°C with derating).

1. Industrial Distribution Boards: Serving as the main or branch breaker for factory power panels.

2. Motor Protection: Providing short-circuit and overload protection for 3-phase motors in pumps, fans, and conveyors.

3. Commercial Real Estate: Reliable circuit protection for HVAC systems, elevators, and lighting arrays in office buildings.

4. OEM Machinery: Integrated protection for industrial ovens, CNC machines, and processing equipment.

• Seamless Compatibility: Our 100A MCCB follows standard mounting dimensions, making it an ideal drop-in replacement or upgrade for existing CHINT, Schneider, or ABB-style installations.

• Flexible Accessories: Can be easily equipped with auxiliary contacts, shunt trips, undervoltage releases, or extended rotary handles for custom panel configurations.

• Safety & Isolation: Featuring a clear "Trip/Off/On" handle indication and a "Push-to-Trip" button for periodic safety testing of the internal mechanism.

• Quality Assurance: Every unit is subjected to rigorous calibration of its thermal and magnetic trip points to ensure compliance with IEC standards.

Q: What is the difference between Icu and Ics?

A: Icu (Ultimate Breaking Capacity) is the maximum fault current the breaker can interrupt once. Ics (Service Breaking Capacity) is the current it can interrupt and still remain operational. Our breakers typically offer an Ics = 75% to 100% Icu.

Q: Can this 100A MCCB be used for DC applications?

A: This specific model is optimized for AC 50/60Hz. While some MCCBs can be used for DC, we recommend using our specialized DC-rated circuit breakers for solar PV and battery storage systems.

Q: Does it come with terminal covers?

A: Yes, we provide phase barriers and terminal covers as standard to ensure proper insulation and safety between the high-gauge cable connections.