Curve C MCB Miniature Circuit Breaker

Curve C MCB Miniature Circuit Breaker is a miniature circuit breaker is widely used in places such as residences, commercial buildings and industrial facilities, especially in circuits where Curve C release characteristics are required to protect electrical equipment and personal safety.

Model:STM16-63

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Product Description

Model	STM16-63
STANDARD	IEC60898-1
Pole	1P,2P,3P,4P
Short circuit breaking capacity	3KA, 4.5KA, 6KA
Rated Current(In)	1,2,4,6,10,16,20,25,32,40,50,63A
Rated Voltage(Un)	AC230(240)/400(415)V
Rated Frequency	50/60HZ
Tripping curve	B,C,D
Magnetic releases	B curve: between 3In and 5 In
	C curve: between 5In and 10In
	D curve: between 10In and 14In
Electro-mechanical endurance	over 6000 cycles

Features and Benefits

 Small size and light weight: Curve C MCB Miniature Circuit Breaker has a compact design for easy installation and space saving.

 Reliable operation: Through the precise release curve and reliable electromagnetic release device, it can quickly cut off the faulty circuit and prevent the damage of electrical equipment.

 Multiple protection functions: In addition to short-circuit protection, it also has overload protection and over-voltage protection functions, which comprehensively safeguard the safety of circuits.

 Strong applicability: Curve C type release curve is applicable to most conventional loads, such as lighting, sockets, etc., which can meet the needs of different circuits.

Principle of operation

The operating principle of the Curve C MCB is mainly based on the monitoring of the current and the action of the disconnecting mechanism. When the current in the circuit exceeds the set value, the electromagnetic release mechanism will act quickly to cut off the circuit. At the same time, the thermal release also heats up during current overload, bending the bimetal and pushing the free release mechanism to act, thus cutting off the circuit.The Curve C type release curve means that under overload conditions, the circuit breaker has a slower release speed to accommodate the short-term overload requirements of some loads.

Selection and Installation Precautions

Matching Current Rating to Load: When purchasing Curve C MCBs, it is necessary to ensure that the circuit breaker's current rating matches the circuit's load to avoid overloaded use that could result in damage to the equipment or triggering an abnormal disconnect.

Selection of Operating Characteristics: Curve C stripping curves are suitable for most conventional loads, but the exact selection will need to be determined by the application requirements of the circuit.

Installation Location: The MCB should be installed in a distribution or switch box to ensure the safety and reliability of the circuit. At the same time, it should be installed in a location where it is easy to be operated and monitored, so that timely measures can be taken in case of malfunction.

Regular Inspection and Maintenance: In order to ensure the proper functioning of the Curve C MCB, it needs to be inspected and maintained on a regular basis. This includes checking that the contacts of the circuit breaker are in good condition, that the disconnecting mechanism is flexible, and so on.

Curve C MCB Miniature Circuit Breaker