Plug in Type 3P Miniature Circuit Breaker MCB

The Plug in Type 3P Miniature Circuit Breaker MCB with three poles (or phases, as it is called) used to automatically cut off the circuit when the current is too high to protect electrical equipment and personal safety.

Model:STD7-63

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Product Description

Model	STD7-63
Standard	IEC/EN 60947-2; IEC60898-1
Pole	1P,2P,3P,4P
Tripping Curve	B,C,D
Rated Short-circuit capacity(Icn)	5KA(240/415V) 10KA(120V)
Rated Current(In/)	6,15,20,30,40,50,63A
Rated Voltage(Un)	AC230(240)/400(415)V
Magnetic releases	B curve: between 3In and 5In C curve: between 5In and 10In D curve: between 10In and 14In
Electro-mechanical endurance	over 6000 cycles

Plug in Type 3P Miniature Circuit Breaker MCB is a miniature circuit breaker mainly provides overload protection and short-circuit protection to prevent the circuit from being damaged due to abnormal current or causing fire and other safety accidents.

Specifications and Parameters

Number of poles: 3 poles, suitable for three-phase circuit protection.

Rated current: According to specific models, the rated current range of 3P MCB may vary, but common rated current values include 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A and so on.

Rated Voltage: Typically for circuits with AC 50/60Hz and rated voltage of 230V/400V.

Breaking capacity: It indicates the maximum current value that MCB can safely cut off the circuit under short-circuit conditions, and the breaking capacity of different models of 3P MCB may be different.

Features and Advantages

Compact structure: 3P MCB is small in size and light in weight, easy to install and maintain.

High reliability: it can quickly respond to abnormal current in the circuit and accurately cut off the circuit to protect electrical equipment from damage.

Versatility: In addition to basic overload and short-circuit protection functions, some 3P MCBs have additional functions such as over-voltage protection and under-voltage protection.

Selection and Installation Precautions

 Rated Current and Load Matching: Select the appropriate rated current value according to the load demand of the circuit to ensure that the MCB can work properly and protect the circuit effectively.

 Brand and quality: Choose well-known brands and high-quality products to ensure product reliability and safety.

 Installation standard: Follow the relevant installation standards and safety requirements for installation to ensure that the MCB can be properly connected to the circuit and play a protective role.

 Regular maintenance: Regularly check the working status of MCB to ensure that it is in good operating condition. If any abnormality or damage is found, it should be replaced or repaired in time.

Plug in Type 3P Miniature Circuit Breaker MCB