Moulded Case Circuit Breaker (MCCB) – [BENLO]

Fixed Thermal & Magnetic Molded Case Circuit Breaker (MCCB) is  a common electrical protection device used to protect circuits from damage caused by overloads and short circuits. The term "fixed" refers to the non-adjustable settings of its internal tripping mechanisms.

• Magnetic protection (for short circuits): A solenoid coil generates an electromagnetic field when a high-level current, such as a short circuit, passes through it. The strong magnetic field instantly attracts a plunger, which trips the breaker without a delay. This rapid, instantaneous response is necessary to protect against the extreme and damaging currents of a short circuit.

• Adjustable trip units: Some MCCBs, often electronic or microprocessor-based, allow for user adjustment of the trip settings. This offers more flexibility for specific applications.

• Trip settings: Cannot be adjusted.
• Applications: Suited for industrial, commercial, and residential uses, particularly in large-scale solar photovoltaic (PV) systems, where they protect main, branch, and feeder circuits.
• Advantages: As a time-tested technology, it is an economical choice for circuit protection in many standard applications where fixed settings are appropriate.
• Disadvantages: It offers less flexibility than MCCBs with adjustable electronic trip units, and its thermal trip characteristics can be affected by ambient temperature.Product variations
  
  Benlo offers several types of MCCBs to suit different requirements: 
  • Standard MCCBs
  • Adjustable MCCBs
  • Compact MCCBs
  • Isolating MCCBs