Leading Series Esm AC/DC High Quality Overvoltage/Undervoltage Protector Miniature/Mini Circuit Breaker with Directive Function

• Breaking Capacity: Low Voltage Circuit Breakers
• Operation: Electric Type
• Speed: Normal Type Circuit Breaker
• Arc-extinguishing Medium: Air
• Installation: DIN Rail
• Structure: MCB
• Model NO.: ESM
• Poles Number: 3
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, Solar Arrester Surge Protector
• Certification: CE, SAA
• ICU: 10ka
• Transport Package: by Sea/Air
• Specification: box
• Trademark: Onccy
• Origin: China
• HS Code: 8536490090
• Production Capacity: 1000000PC/Year

Product Description

AC Circuit Breaker Manufacturer

AC circuit breaker is an essential safety device used in electrical systems to protect electrical circuits from excessive current flow due to an overload or a short circuit.  AC Circuit breakers are typically used in residential, commercial, and industrial applications to maintain the safety and functionality of electrical systems.

The main components of an AC circuit breaker are:

Contacts: These are the conductive parts that allow the flow of current when the circuit breaker is closed (ON position) and interrupt the current flow when the circuit breaker is open (OFF position).

Bimetallic strip: This component is made from two different metals bonded together. The strip bends when heated due to the difference in thermal expansion coefficients of the metals. In the event of an overload, the heat generated by the excessive current causes the bimetallic strip to bend, triggering the circuit breaker to trip and interrupt the current flow.

Electromagnetic coil: This coil generates a magnetic field when current flows through it. If the current exceeds a certain threshold (as in the case of a short circuit), the magnetic field becomes strong enough to actuate the circuit breaker mechanism, causing it to trip and interrupt the current flow.

Arc extinguishing chamber: When the contacts separate during a trip, an electric arc forms between them. The arc extinguishing chamber helps to cool and extinguish the arc, preventing damage to the contacts and other components.

 

ESM1-63(10KA) AC Circuit Breaker B/C/D curve 2P/3P/4P 415V~500V 63A 7.5KA

Product Benefits

• Choice to use Bus bar or cable in the same terminal, provides reliable connection.
• Two step snapping mechanism for easy & efficient mountion in 35mm DIN Rail steadily.
• Clear indication of the ON/OFFswitch status.
• IEC 60898 10KA
• MCB can 100% pass 10KA
• Over 20,000 cycles ,mechanical and electrical endurance operation

ESM1-63(10KA) AC Circuit Breaker MCB B/C/D curve 1P 240/415V~ 63A 10KA

Product Benefits

• Choice to use Bus bar or cable in the same terminal, provides reliable connection.
• Two step snapping mechanism for easy & efficient mountion in 35mm DIN Rail steadily.
• Clear indication of the ON/OFFswitch status.
• IEC 60898 10KA
• MCB can 100% pass 10KA
• Over 20,000 cycles ,mechanical and electrical endurance operation

ESM2-63 AC mini Circuit Breaker MCB B/C/D curve 1P 2P 3P 4P 63A 415V 6KA

Product Benefits

• Choice to use Bus bar or cable in the same terminal, provides reliable connection.
• Two step snapping mechanism for easy & efficient mountion in 35mm DIN Rail steadily.
• Clear indication of the ON/OFFswitch status.
• IEC 60898 10KA
• MCB can 100% pass 10KA
• Over 20,000 cycles ,mechanical and electrical endurance operation

Technical Data

 

Overload Current Protection Characteristics
Test Procedure	Type	Test Current	Initial State	Tripping or Non-tripping Time Limit	Expected Result	Remark
A	B.C.D	1.13In	Cold	t≤1h	no tripping
B	B.C.D	1.45In	After test A	t≤1h	tripping	The current steadily rise to the specified value within 5s
C	B.C.D	2.55In	Cold	1s<t<60s(In≤32A)   1s<t<120s(In>32A)	tripping
D	B	3In	Cold	t≤0.1s	no tripping	Turn on the auxiliary switch to close the current
	C	5In
	D	10In
E	B	5In	Cold	t≤0.1s	tripping	Turn on the auxiliary switch to close the current
	C	10In
	D	20In

 

Installation
Contact position indicator	Yes
Protection degree	IP20
Reference temperature for setting of thermal element	30°C
Ambient temperature	-5~+40°C and its average over a period of 24h does not exceed +35°C
Storage temperature	-25~+ 70°C
Terminal connection type	Cable/U-type busbar/Pin -type busbar
Terminal size top/bottom for cable	25mm2
Tightening torque	2.5N.m
Mounting	On DIN rail FN 60715 (35mm) by means of fast clip device
Connection	Top and bottom

Detailed Photos

 

 

FAQ
Q: Are you trading company or manufacturer ?
A: We are manufacturer. We have 30,000 square meters of self-owned plant.

Q: Do you have any certificates?
A: Yes,we have UL, TUV, CB, SAA, CCC, CE and other certifications.

Q: How do we make a quick response to customer , 5 inquiry ?
A: Our professional team will reply you online or by email,Skype, whatsApp and so on.

Q: Do you have any exporting experience?Which countries did you export to before?
A: We have lots of exporting experience and customers in many countries,such as America, Japan,Australia,UAE,Canada,Vietnam,Turkey,Thailand,Russia,UK,etc.

Q:Can you supply samples for checking ?
A: Yes, we can supply samples, pls contact for detailed required.

Q:How long is your delivery time?
A: Generally it is within 3days for small qty. Or it is around 15-20 days to a general order.

Q: What is the standard of package of your goods?
A: Export standard package or special package according to customer requirement.

Q:How about inspection?
A: We have the whole inspection system from raw material to end products include transient test, delay test,mechanical life test and so on.Q:What is the service offered by company?

A: We have the professional engineer team which can design and develop the mould to arrive different customer requirements. We also have the professional sales team to offer good service from pre-sale to after-sale.