SRM3 Series DC Molded Case Circuit Breaker(DC MCCB) for solar photovoltaic power generation system

The new type DC/AC SRM3 mould case circuit breaker is used for solar photovoltaic power generation systems.

Rated Current




Rated Voltage


Breaking Capacity


Mechanical life


Rated insulation voltage


Production Process

Professional production of electrical products, as circuit breakers, mould case circuit breakers, contactors, which supporting copper and iron parts, monthly output of 550,000 sets; Have all kinds of stamping die design self-made ability. Products: conductive system, static contact, iron parts, packaging parts. 

Technological process: materials→Molding→screw tap→electroplate→electro welding→riveting→testing→packing

Details about SRM3 Series DC Molded Case Circuit Breaker(DC MCCB) for solar photovoltaic power generation system

(Last Updated On: 2021年9月9日)

Performance Introduction

Through years of focusing on the actual system operation and customer’s needs for new

energy at home and abroad, the new type SRM3 has come out.


SRM3- (HU) series mold case circuit breaker, the rated voltage up to AC1000V, current up to 400A.

Compliance with standards

IEC 60947-1 GB/T14048 1 General Provisions

The IEC 60947-2 GB/T14048 2 circuit breaker

Applicable environment

Apply to the environment  

1. The altitude of the installation site should not exceed 2000m.  

2. The ability to be affected by humid air (three prevention types);  

3. Able to be affected by salt fog and oil fog (three prevention types);  

4. Can withstand the influence of mold (three prevention types);  

5. In the medium without explosion danger, and the medium is free of gas and conductive dust enough to corrode metal and destroy insulation.  

Note: ① Three protection products need special customization, please indicate TH.  

Usage and Maintenance  

The characteristics and accessories of the circuit breaker are set by the manufacturer and can not be adjusted at will in use.  Provided the user complies with the conditions of storage and use.  The seal of the circuit breaker shall be intact within 24 months from the date of delivery by the manufacturer. The manufacturer shall be responsible for the replacement and repair of the circuit breaker free of charge if the products are damaged or cannot be used normally due to quality problems.


Type SRM3-320HU SRM3-400HU SRM3-630HU SRM3-800HU
Shell frame grade rated current In(A) 320 400 630 800
Rated current In(A) 125,140,160,180,200,


225,250,315,350,400 400,500,630 630,700,800
Pole 3 3 3,4 3,4
Rated voltage Ue (V)AC 690 800 1000 690 800 1000 690 800 1000 690 800 1000
nominal insulation voltage Ui (V) 1000 1000 1000 1000
Rated impact pressure resistance Uimp (kV) 8 12 12 12
Breaking Capacity leu (kA) 36.5 30 12 36.5 30 12 36.5 30 12 36.5 30 12
Short circuit breaking ability in operation less (kA) 30 23 12 30 23 12 30 23 12 30 23 12
Wiring Top-down out
  • Mechanical life (total number of times)

10000 10000 10000 10000
  • Electrical life (total number of times)

2000 2000 2000 2000
  • Whether it has isolation characteristics

Standard IEC 60947-2 GB/T 14048.2
Temperature -40-+700 C
Protection Degree IP20
Certificate CCC、CE、CB、TUV
attachments Auxiliary, alarm, shunt, manual operation, electric operation
flashover distance(mm) 2 50(Zero back arc with arc hood)
Instantaneous action value 10ln
Size(LxWxH)(mm) 180x107x126(3P) 258x150x107(3P) 280x210x115.5(3P) 280x210x115.5(3P)
  • Fixed type, plug-in type

The Installation of the product


Shipping and DeliveryAH3-3 Time relay AC220V Delay Timer Time Relay 8Pin 1S 10S 30S 60S Power On Delay Timer Time Relay With PF083A Socket

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