Proven and reputable supplier of outstanding services
2p 1000V Circuit Breaker 125A DC MCB for Solar System

2p 1000V Circuit Breaker 125A DC MCB for Solar System

Package size per unit product 46.00cm * 24.00cm * 33.00cm Gross weight per unit product 0.010kg SONTUOEC 2P DC500V ,DC10;
Basic Info
Model NO. STM11-125
Arc-extinguishing Medium Air
Installation Fixed
Structure MCB
Poles Number 4
Type Circuit Breaker
Function Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection), RCCB
Certification CE
Standard IEC 60898
Ue 230/400V
in 1,2,4,6,10,16,20,25,32,40,50,63A
Pole 1p 2p 3p 4p
Price Factory Price
Transport Package Exporting Carton
Specification 240pcs/ctns
Origin Wenzhou Zhejiang
HS Code 8536200000
Production Capacity 10000pieces/Day
Packaging & Delivery
Package size per unit product 46.00cm * 24.00cm * 33.00cm Gross weight per unit product 0.010kg
Product Description

SONTUOEC 2P DC500V ,DC1000V Circuit Breaker 63A to 125A DC MCB for Solar PV System General


MCB series high breaking miniature circuit breaker has the features of structure advanced, performance reliable, breaking capacity high, appearance elegant and its shell and parts are made of material with impact resistance, strong flame-retardant feature.

It is suitable to power system of 50or 60 frequency ,Ue 400V and below, Ui 63A and below.

It is mainly applied at office building, residence, for lighting , power distribution and overload and short circuit protection of equipment. Normally, it also can be used as the not frequent transfer of power system. It conforms to the standards IEC60898and GB10963.1.

DC MCB supplementary protectors are designed to provide overcurrent protection within appliances or electrical equipment, where a branch circuit protection is already provided or not required. Devices are designed for direct current (DC) control circuit applications.

Technical Parameters:

Pv Seres CicumBreaker

Frame degreerated current (A)

63 ; 125

Electical performance

Ue Rated operating volage (V DC)





Rated Current in (A)

6A 10A 16A 20A 25A 32A 40A 50A 63A ; 80A,100A,125A

Rated insulato voltage Ui (V DC)

2P: 800V 4P:1200V

ated Impact voltage Uimp (KV)


Utimate breaking capacity lcu (kA)


Run breaking capacity lcs(%lcu)


Curve type


Trip type


MECHANICAL Actual average value


MECHANICAL Standard value


ELECTRIC Actual average value


ELECTRIC Standard value


Control and indication

Shunt release ( SHT )


Undervoltage release ( UNT )

Auxiliary contact (AX)

Alarm contact (AL)

Connection and installation

Wring capacity (mm²)

In≤32A.1-25 mm².I≥40A,10~35mm²

Ambient temperature ( °C)




Relative humidity


Pollution Level


Installation Environment

No obvious shock and vibration

Installation category



DIN Standard rail


1.mechanical life:20,000 times(off-on).

2.heat resistance: category 2 (temperature 55°C,relative humidity 95%).

3.wiring is terminal with clamp, cable dia.:25mm2.

2p 1000V Circuit Breaker 125A DC MCB for Solar System

Current Release Character Diagram:

Test current


Rated current


Requested timeResultStart stationRemark
1.13Inallt>=1hDon't tripCool
1.45InAllT<1htripheatCurrent ascends the requested value stably in 5s
2.55InIn<=32A1s<t<60stripCoolAuxiliary switch closed, power is on
2.55InIn>32A1s<t<120stripCoolAuxiliary switch closed, power is on
5In(Cmode)Allt>=0.1sDon't tripCoolAuxiliary switch closed, power is on
10In(Cmode)AllT<0.1s tripCoolAuxiliary switch closed, power is on
10(Dmode)Allt>=0.1s Don't tripCoolAuxiliary switch closed, power is on
14In(Dmode)AllT<0.1stripCoolAuxiliary switch closed, power is on

Our Services:
  1. Competitive price
  2. Continuance Service and support
  3. Good-after service
  4. Quality Reliability and Long Product Life.

Q 1. what's the payment term?
A. We accept TT,30% deposit and 70% balance agaisnt copy of BL
Q 2. how's the delivery time ?
A. usually it will take about 25 days for production
Q 3. tell me the standard of package?
A. Normally are cartons, but also we can pack it according to your requirement.
Q 4.Would you accept to use our logo ?
A.If you have good quantity,it absolute no problem to do OEM.
Q5. Can i take some samples?
A: Yes, we support to take samples before place the order. Just feel free to contact with us if you have any requirements.
Q6. Are you original Factory?
A: Yes, we have our own factory .
Q7. How can you make sure the quality of the products?
A: We will accord to international quality standards to inspect every item before leaving our factory.

2p 1000V Circuit Breaker 125A DC MCB for Solar System

Send inquiry