Circuit Breaker

Sofielec designs and makes low-voltage protection products. Its circuit breaker range includes miniature circuit breakers (MCBs), RCCBs, RCBOs, MCCBs, ACBs, DC models, smart models, and accessories for homes, commercial buildings, industrial panels, renewable energy systems, chargers, and final distribution boxes.

JVRX-16 AC 16 series Auxiliary Circuit breaker Accessory

JVRX-16 AC 16 series Auxiliary Circuit breaker Accessory

JVRX-16 AC 16 series Auxiliary Circuit breaker Accessory from Model:JVRX-16;

JVRX-16 UT+AC 16 series Auxiliary Circuit breaker Accessory

JVRX-16 UT+AC 16 series Auxiliary Circuit breaker Accessory

JVRX-16 UT+AC 16 series Auxiliary Circuit breaker Accessory from Model:JVRX-16 UT+AC;

STM6DC series moulded-case DC circuit breaker 800A Residual Current Operated mccb 3P 4P Circuit Breakers RCCB

Manufacturer factory 3P 100A 800A Moulded Case Circuit Breaker MCCB STM6DC series

STM6DC series moulded-case DC circuit breaker 800A Residual Current Operated mccb 3P 4P Circuit Breakers RCCB from Model:STM6DC;Rated current(A):10-1250A; Rated operating voltage(Ue):DC250V,DC500V,DC750V,...

1250A Residual Current Operated mccb 3P 4P Circuit Breakers RCCB

Molded case circuit breaker 3p 400A 630A 1250A Mccb

1250A Residual Current Operated mccb 3P 4P Circuit Breakers RCCB from Model:STM6;Rated current(A):10-800A; Rated operating voltage(Ue):400V; Rated Insulation Voltage(Ui):1000V; Rated impact withstand volta...

STM6EL 1250A Residual Current Operated mccb 3P 4P Circuit Breakers RCCB

Sofielec factory outlet STM6EL 1250A Residual Current Operated mccb 3P 4P Circuit Breakers RCCB

STM6EL 1250A Residual Current Operated mccb 3P 4P Circuit Breakers RCCB from Model:STM6EL;Rated current(A):10-630A; Rated operating voltage(Ue):400V; Rated Insulation Voltage(Ui):1000V; Rated impact withst...

B3 series Electromagnetic Mini Circuit Breaker,Hydraulic Electromagnetic Circuit Breaker

B3 series Electromagnetic Mini Circuit Breaker,Hydraulic Electromagnetic Circuit Breaker

B3 series Electromagnetic Mini Circuit Breaker,Hydraulic Electromagnetic Circuit Breaker from Model:B3;Maximum voltage:480/277V AC 50/6Hz,80V DC; Current Ratings:1A to 100A; Insulation resistance:Minimum o...

B2 series Electromagnetic Mini Circuit Breaker,Hydraulic Electromagnetic Circuit Breaker

B2 series Electromagnetic Mini Circuit Breaker,Hydraulic Electromagnetic Circuit Breaker

B2 series Electromagnetic Mini Circuit Breaker,Hydraulic Electromagnetic Circuit Breaker from Model:B2;Maximum voltage:277V AC 50/6Hz,80V DC; Current Ratings:1A to 50A; Insulation resistance:Minimum of 100...

Basic parameters of B1 series circuit breaker , Electromagnetic Mini Circuit Breaker

Basic parameters of B1 series circuit breaker , Electromagnetic Mini Circuit Breaker

Basic parameters of B1 series circuit breaker , Electromagnetic Mini Circuit Breaker from Model:B1;Maximum voltage:250V AC 50/6Hz,80V DC; Current Ratings:1A to 30A; Insulation resistance:Minimum of 100 Meg...

80A RCCB

2 pole RCCB 40A/80A With CE CB NF Approval

2 Pole RCCB has a rated current of 80A and features a breaking capacity of 4.5kA, meaning it can withstand short-circuit currents up to 4.5kA. It is available with a rated residual operating current (I△n) ...

6kA SFM3-125 DC 125A best quantity D16 types of miniature circuit breaker

6kA SFM3-125 DC 125A best quantity D16 types of miniature circuit breaker

6kA SFM3-125 DC 125A best quantity D16 types of miniature circuit breaker from Model:SFM3-125 DC 125A;Rated current(A):1,2,3,4,6,10,16,20,25,32,40,50,63; Frame size Rated current(A):63A, 125A; Number of po...

6kA SFM65N-63 best quantity C25 types of miniature circuit breaker

6kA SFM65N-63 best quantity C25 types of miniature circuit breaker

6kA SFM65N-63 best quantity C25 types of miniature circuit breaker from Pole No:1P. 1P+N. 2P. 3P. 3P+N. 4P; Rated current(A):1. 2. 3.4. 6. 10.16. 20. 25. 32. 40. 50. 63; Rated voltage:AC 230. 230/400. 400;...

UKM32M series ac/dc 400A 630A mccb

High Quality AC/DC MCCB UKM32M IEC 60947-2 Implementation of standards from Model:UKM32M;Frame size:160,250,630; Rated curent, In:16,20,25,32,40,50 63,80,100,125,160,200,250,300,400,630; No. of poles:2*,3,...

High Quality AC/DC MCCB UKM32 IEC 60947-2 Implementation of standards

High Quality AC/DC MCCB UKM32 IEC 60947-2 Implementation of standards from Model:UKM32;Frame size:160,250,630; Rated curent, In:16,20,25,32,40,50 63,80,100,125,160,200,250,300,400,630; No. of poles:2*,3,4;...

IEC60947-2 YEW1 3P 2000A Air circuit breaker

Factory Outlet IEC 60947-2 YEW 1 3P 2000A ACB Air Circuit Breaker

IEC60947-2 YEW1 3P 2000A Air circuit breaker from Model:YEW1;Enterprise code:Honghao Electrical Technologe Co.,Ltd; Product category:Universal Type Circuit Breaker; Rated current:200A-6300A; Product name:a...

GKW1 series intelligent universal circuit breaker

GKW1 series IP30 2000a-6000a ACB intelligent universal circuit breaker

GKW1 series intelligent universal circuit breaker from Model:GKW1;

GKM1 series plastic case circuit breaker

GKM1 series plastic case circuit breaker

GKM1 series plastic case circuit breaker from Model:GKM1;Rack rated current (A):63,100,160,250,400,630; Rated working voltage (V):AC400V; Rated insulation voltage (V):690V,800V;

PV installations DC supplementary earth protection MCB circuit breaker with CE CB TUV certificate

DC MCB Circuit Breaker For Motor Protection With CE CB TUV Certificate

Yueqing Sofielec Electrical Co, Ltd is a professional MCB manufacturer and supplier with more than 20 years of experience in China, the MCBs provided by the factory are in various sizes and grades to meet ...

DC JVM16-63 DC Protection Series Circuit Breaker

DC JVM16-63 DC Protection Series Circuit Breaker

DC JVM16-63 DC Protection Series Circuit Breaker from Model:DC JVM16-63;Pole No:1,2; Rated Voltage:1P:250V 2P:500V; Rated Current in(A):1,2,3,4,6,10,13,16,20,25,32,40,50,63; Tripping Curve:B,C; Rated shor...

6kA JVM9-32 Factory OEM make 1P+N 25A DPN circuit breaker switch CE approval

6kA JVM6-32 Factory OEM make 1P+N 25A DPN circuit breaker switch CE approval from Model:JVM6-32;Pole No:1P+N; Rated voltag:AC 230V; Rated Current:3,6, 10, 16, 20, 25, 32; Tripping curve:B,C,D; High shot-ci...

6kA JVM6-32 Factory OEM make 1P+N 25A DPN circuit breaker switch CE approval

6kA JVM6-32 Factory OEM make 1P+N 25A DPN circuit breaker switch CE approval

6kA JVM6-32 Factory OEM make 1P+N 25A DPN circuit breaker switch CE approval from Model:JVM6-32;Pole No:1P+N; Rated voltag:AC 230V; Rated Current:3,6, 10, 16, 20, 25, 32; Tripping curve:B,C,D; High shot-ci...

6kA SFM65N-63 best quantity C25 types of miniature circuit breaker

MCB 6KA C25 Types of Miniature Circuit Breaker SFM65N-63

SFM65N-63 miniature circuit breaker has a high breaking capacity (6kA), mechanical life is 4000 times, and tripping curve is B, C, D, DIN guide rail installation.

6kA SFM65N-63 best quantity C25 types of miniature circuit breaker

SFM65N-63 China B C D Curve MCB

Sofielec Electrical is an MCB manufacturer and supplier with more than 20 years of experience in China, providing you with Miniature Circuit Breaker, which can be installed on the circuit board, on the ele...

Key Features of Sofielec Electrical Circuit Breakers

  • Bimetal and Magnetic Trip Design—Overload and Short-Circuit Protection

    Consistent tripping starts with careful assembly and setup. Sofielec assembles the bimetal parts, sets the thermal trip, and adjusts the magnetic unit to keep trip action steady across different current levels. B, C, and D curves serve different loads. Each trip unit is matched to its load type to reduce false trips while still giving the level of protection the circuit needs.

  • Arc Chamber Design—Safer Fault Breaking

    A short circuit creates a strong electrical arc. If that arc is not controlled, it can burn the contacts, heat the case, stop the breaker from opening, or create a safety risk. Sofielec uses a multi-plate arc chamber. The arc guide and contact gap help stretch, cool, and put out the arc faster, which supports safer fault breaking.

  • DIN Rail and Busbar Design—Made for Different Distribution Boxes

    Standard DIN rail mounting keeps installation simple. Depending on the series, Sofielec units can work with pin busbars, fork busbars, or other busbar types for different panel designs. A firm clip helps each unit sit straight. Standard module sizes also reduce mounting errors during batch assembly, helping customers build distribution boxes with better speed and fit.

  • Silver Alloy Contact Joining—Stable Switching and Fault Breaking

    Contacts do the hardest work inside a breaker. Sofielec uses silver alloy contacts and joins them to current-carrying parts by welding or riveting to form a strong connection. A stable contact keeps resistance lower. It also reduces contact wear and supports reliable switching during frequent use and when the breaker must clear a fault.

Quality Control for Low Voltage Circuit Breakers —Required Checks Before Shipment

Quality Control for Low Voltage Circuit Breakers —Required Checks Before Shipment

A breaker is a safety part. Its real value appears during overloads, short circuits, leakage faults, and other abnormal conditions, when dependable trip action matters most. Quality checks cover every main production stage. Sofielec checks raw materials, part assembly, mechanism settings, trip action, and final units, then selects test items for each product type and standard.

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OEM/ODM Support

OEM/ODM Support

OEM and ODM support is available. Sofielec can match product groups, certification files, package labels, manual languages, and brand marks to the needs of each target market. Local buying habits guide the final range. Customers can choose common current ratings, breaking capacities, pole counts, leakage protection types, and mounting styles for local sales or project use.

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