MCB
![MCB_FP.149 Polycab miniature circuit breakers operational safety greater convenience](https://polycab.com/wp-content/uploads/2019/05/MCB_FP.149-300x300.png)
Miniature Circuit Breakers are electromechanical devices which protect an electrical circuit from an overcurrent. The overcurrent, in an electrical circuit, may result from short circuit, overload or faulty design. A MCB is a better alternative to a fuse since it does not require replacement, once an overload is detected. Unlike fuse, a MCB can be easily reset and thus offers improved operational safety and greater convenience without incurring large operating cost.
![Group 111 Polycab MCB on-off indication](https://polycab.com/wp-content/uploads/2020/01/Group-111-1.png)
On/Off Indication
Red & Green flag indication provided below the knob gives indication of positive electrical ON/OFF contact status irrespective of mounting or knob position even from a
distance.
![Group 338 Polycab MCB 13 plates arc chamber](https://polycab.com/wp-content/uploads/2020/01/Group-338.png)
13 Plates Arc Chamber
Quick & Efficient Arc Quenching
![Group 339 Polycab MCB low power loss](https://polycab.com/wp-content/uploads/2020/01/Group-339.png)
Low Power Loss
Power Loss values upto 70% lesser than specified by IEC/IS, making Poly shied MCB one of the most energy efficient MCB.
![Group 105 Polycab MCB easy MCB extraction](https://polycab.com/wp-content/uploads/2020/01/Group-105-1.png)
Easy MCB Extraction
No dismantling of busbar to remove MCB – Unique mounting assembly allows to remove single MCB from shorting busbar without disturbing other MCBs.
![Group 106 Polycab MCB energy limiting class 3](https://polycab.com/wp-content/uploads/2020/01/Group-106-1.png)
Energy Limiting Class 3
Low let- through energy I T under short-circuit conditions ensures longer life of contacts and reduces thermal stresses in the distribution circuit.
![Group 109 Polycab MCB air flow channel](https://polycab.com/wp-content/uploads/2020/01/Group-109.png)
Air Flow Channel
Reduces Body Temperature and keeping it cool to provide better performance
![Group 107 Polycab MCB combi head screw](https://polycab.com/wp-content/uploads/2020/01/Group-107-1.png)
Neutral Pole Protected
Neutral pole is also protected against short circuit. so even if short circuit occurs at the
neutral side, appliance or connected device will be protected.
![Group 328 Polycab mcb mcb durability](https://polycab.com/wp-content/uploads/2020/01/Group-328.png)
MCB Durability
Electrical Life 10,000 Operation Tested Mechanical Life 20,000 Operation Tested
![Group 110 Polycab MCB BI - stable din clip](https://polycab.com/wp-content/uploads/2020/01/Group-110-1.png)
Bi-Stable DIN Clip
Easy Mounting Strong hold on DIN Rail
![Group 111 Polycab MCB on-off indication](https://polycab.com/wp-content/uploads/2020/01/Group-111-1.png)
Breaking Capacity 10 kA
![200x200 Polycab MCB ergonomic dolly](https://polycab.com/wp-content/uploads/2020/01/200x200.png)
Ergonomic Dolly
Easy to Operate ON / OFF Marking to Know the status of MCB
![Group 316 Polycab MCB IP 20 proctection](https://polycab.com/wp-content/uploads/2020/01/Group-316.png)
IP 20 Protection
No accidental Contact/ Shock from live part during installation
![Group 337 Polycab MCB line load reversibility](https://polycab.com/wp-content/uploads/2020/01/Group-337.png)
Line Load reversibility
The line or load can be connected to either side of the Polycab MCB without any reduction in Performance.
![Group 108 Polycab MCB combi head screw](https://polycab.com/wp-content/uploads/2020/01/Group-108.png)
Combi Head Screw
Ease of Clamping