AC MCB

US$1.20-4.20 / Piece

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What is 6ka 10/16/25/32/40/50/63AMP 4 Pole AC MCB Circuit Breaker 2p Air Switch

Name: 6ka 10/16/25/32/40/50/63AMP 4 Pole AC MCB Circuit Breaker 2p Air Switch
Uploaded: 2026-01-07T01:49:42+08:00
Description: ESM2-63(6KA)MCB is the main protection system for all low voltage electrical installations. Installed in each electrical switchboard, it prevents the spread of overvoltages in the electrical installat

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Price

Min. Order Reference FOB Price

1 Piece US$1.20-4.20 / Piece

Sepcifications

Breaking Capacity Low Voltage Circuit Breakers
Operation Electric Type
Speed Normal Type Circuit Breaker
Arc-extinguishing Medium Air
Installation DIN Rail
Structure Solar Arrester Surge Protector
Poles Number 1p/2p/3p/4p
Type Circuit Breaker
Function Circuit-Breaker Failure Protection
Certification CE
Transport Package by Sea/Air
Specification box
Trademark Aswich
Origin China
Voltage Ui 500V AC
ICU 6ka
Rated Current (in) 1-63A
Rated Voltage (Ue) 1p: 240/415V~ 2/3/4p:415~
Rated Frequency 50/60Hz
Energy Limiting Class 3
Tripping Curve B C D
Electrical and Mechanical Life 20000
Standard IEC60898-1
Protection Degree IP20
Mounting on DIN Rail 60715 (35mm) by Means of Fast Clip Dev
Tightening Torque 2.5n.M
Storage Temperature -25~+ 70°c

Product Description

ESM2-63(6KA)MCB is the main protection system for all low voltage electrical installations. Installed in each electrical switchboard, it prevents the spread of overvoltages in the electrical installations and protects the loads. Product Description Choice to use Bus bar or cable in the same ...

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Aswich Electrical Co., Ltd.

Diamond Member Since 2022

Audited Supplier

Business Type Trading Company
Main Products Circuit Breaker, DC Isolator, DC Disconnector, AC Isolation Switch, Rapid Shut-Down ...
Year of Establishment 2020-12-04
Number of Employees 24
Address Yueqing, Zhejiang, Shanghai, China

AC MCB Comparison

	6ka 10/16/25/32/40/50/63AMP 4 Pole AC MCB Circuit Breaker 2p Air Switch Contact Now	Quick View 1000V Ui Moulded Case Circuit Breaker MCCB Contact Now	Quick View 25AMP Circuit Breaker MCCB with IEC60947-2 Contact Now	Quick View 32AMP Circuit Breaker MCCB with IEC60947-2 Contact Now	Quick View Arm3-250 Moulded Case Circuit Breaker MCCB Electrical Circuit Breaker Contact Now

Transaction Info
	6ka 10/16/25/32/40/50/63AMP 4 Pole AC MCB Circuit Breaker 2p Air Switch Contact Now	Quick View 1000V Ui Moulded Case Circuit Breaker MCCB Contact Now	Quick View 25AMP Circuit Breaker MCCB with IEC60947-2 Contact Now	Quick View 32AMP Circuit Breaker MCCB with IEC60947-2 Contact Now	Quick View Arm3-250 Moulded Case Circuit Breaker MCCB Electrical Circuit Breaker Contact Now
Price	US$1.20-4.20 / Piece	US$20.00-30.00 / Piece	US$10.00-30.00 / Piece	US$10.00-30.00 / Piece	US$11.00-45.00 / Piece
Min Order	1 Piece	1 Piece	1 Piece	1 Piece	1 Piece
Payment Terms	LC, T/T, D/P	LC, T/T, D/P, PayPal, Western Union, Small-amount payment	LC, T/T, D/P, PayPal, Western Union, Small-amount payment	LC, T/T, D/P, PayPal, Western Union, Small-amount payment	LC, T/T, D/P, PayPal, Western Union, Small-amount payment
Quality Control
Product Certification	CE	CCC	CCC	CE, CCC	CCC
Management System Certification	-	-	-	-	-
Trade Capacity
Export Markets	South America, Europe, Africa, East Asia(Japan/ South Korea), Australia	Domestic	Domestic	Domestic	Domestic
Annual Export Revenue	-	-	-	-	-
Business Model	ODM, OEM	Own Brand, ODM, OEM	Own Brand, ODM, OEM	Own Brand, ODM, OEM	Own Brand, ODM, OEM
Average Lead Time	Peak Season Lead Time: one month Off Season Lead Time: within 15 workdays	Peak Season Lead Time: within 15 workdays Off Season Lead Time: within 15 workdays	Peak Season Lead Time: within 15 workdays Off Season Lead Time: within 15 workdays	Peak Season Lead Time: within 15 workdays Off Season Lead Time: within 15 workdays	Peak Season Lead Time: within 15 workdays Off Season Lead Time: within 15 workdays
Product Attributes
Specification	Breaking Capacity: Low Voltage Circuit Breakers; Operation: Electric Type; Speed: Normal Type Circuit Breaker; Arc-extinguishing Medium: Air; Installation: DIN Rail; Structure: Solar Arrester Surge Protector; Poles Number: 1p/2p/3p/4p; Type: Circuit Breaker; Function: Circuit-Breaker Failure Protection; Voltage Ui: 500V AC; ICU: 6ka; Rated Current (in): 1-63A; Rated Voltage (Ue): 1p: 240/415V~ 2/3/4p:415~; Rated Frequency: 50/60Hz; Energy Limiting Class: 3; Tripping Curve: B C D; Electrical and Mechanical Life: 20000; Standard: IEC60898-1; Protection Degree: IP20; Mounting: on DIN Rail 60715 (35mm) by Means of Fast Clip Dev; Tightening Torque: 2.5n.M; Storage Temperature: -25~+ 70°c;	Breaking Capacity: Low Voltage Circuit Breakers; Operation: Manual Type; Speed: Normal Type Circuit Breaker; Arc-extinguishing Medium: Air; Installation: Fixed; Structure: MCCB; Poles Number: 3; Type: Circuit Breaker; Function: Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection); Usage Category: Category a; Mechanical Life(Time): 8500; Electrical Life(Time): 1500; Working Voltage: 400V;	Breaking Capacity: Low Voltage Circuit Breakers; Operation: Manual Type; Speed: Normal Type Circuit Breaker; Arc-extinguishing Medium: Air; Installation: Fixed; Structure: MCCB; Poles Number: 3; Type: Circuit Breaker; Function: Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection); Usage Category: Category a; Mechanical Life(Time): 8500; Electrical Life(Time): 1500; Rated Current: 16A/20A/25A/32A/40A/50A/63A/80A/100A/125A; Rated Current of Frame Size: 125A; Number of Poles: 3p/4p; Rated Working Voltage: 400V/690V; Rated Insulation Voltage: 1000V; Rated Impulse Withstand Voltage: 8kv; Rated Ultimate Short-Circuit Breaking Ca: 35ka/50ka/70ka/100ka; Rated Service Short-Circuit Breaking Cap: 22ka/35ka/50ka/70ka;	Breaking Capacity: Low Voltage Circuit Breakers; Operation: Manual Type; Speed: Normal Type Circuit Breaker; Arc-extinguishing Medium: Air; Installation: Fixed; Structure: MCCB; Poles Number: 3; Type: Circuit Breaker; Function: Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection); Usage Category: Category a; Mechanical Life(Time): 8500; Electrical Life(Time): 1500; Rated Current of Frame Size: 125A; Number of Poles: 3p/4p; Rated Working Voltage: 400V/690V; Rated Insulation Voltage: 1000V; Rated Impulse Withstand Voltage: 8kv; Rated Ultimate Short-Circuit Breaking Ca: 35ka/50ka/70ka/100ka; Rated Service Short-Circuit Breaking Cap: 22ka/35ka/50ka/70ka;	Breaking Capacity: Low Voltage Circuit Breakers; Operation: Manual Type; Speed: Normal Type Circuit Breaker; Arc-extinguishing Medium: Air; Installation: Fixed; Structure: MCCB; Poles Number: 3; Type: Circuit Breaker; Function: Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection); Usage Category: Category a; Mechanical Life(Time): 7000; Electrical Life(Time): 1000; Rated Current: 16A/20A/25A/32A/40A/50A/63A/80A/100A/125A; Rated Current of Frame Size: 125A; Number of Poles: 3p/4p; Rated Working Voltage: 400V/690V; Rated Insulation Voltage: 1000V; Rated Impulse Withstand Voltage: 8kv; Rated Ultimate Short-Circuit Breaking Ca: 35ka/50ka/70ka/100ka; Rated Service Short-Circuit Breaking Cap: 22ka/35ka/50ka/70ka;
Supplier Name	Aswich Electrical Co., Ltd.	Shanghai Huakun Electrical Company Ltd.	Shanghai Huakun Electrical Company Ltd.	Shanghai Huakun Electrical Company Ltd.	Shanghai Huakun Electrical Company Ltd.
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Circuit Breaker Arc Extinction: Principles, Methods, and Common Technologies
By Aswich Electrical Co., Ltd. on 25/04/2025
When it comes to electrical safety, circuit breakers play a crucial role in preventing damage to systems by disconnecting electrical circuits during faults or overloads. One of the most critical aspects of a circuit breaker’s performance is its ability to handle electrical arcs. Arcing occurs when a circuit breaker interrupts current, potentially causing damage to the device, electrical components, or even posing a fire hazard. That’s why understanding how circuit breakers extinguish arcs is essential for ensuring safe, reliable operation.
In this blog, we’ll dive into the key arc extinction principles, common methods, and the specific technologies used by various circuit breakers. By the end of this article, you’ll gain a clear understanding of how arc extinction works and how it helps protect your electrical systems.

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