Professional DC MCCB Manufacturer

Leading DC MCCB manufacturer specializing in high-performance DC molded case circuit breakers for solar and renewable energy applications. Our DC MCCB products deliver reliable protection for photovoltaic systems with voltage ratings up to 1600V DC and breaking capacities up to 85kA.

IEC 60947-2 Compliant

DC Protection Expertise

20+ years in solar applications

Reliable Overcurrent & Short-Circuit Protection

Complete Voltage Range

250V-1500V DC MCCB solutions

Designed for PV Environments

OEM/ODM Services

Available for private labeling

Fast Delivery

7-15 days days standard lead time

Complete DC MCB Product Range for B2B Customers

As a specialized DC MCCB manufacturer, we offer custom-designed DC molded case circuit breakers for photovoltaic and renewable energy applications. Our DC MCCB product line covers voltage up to 1500V DC, which provides reliable overcurrent protection for solar installations ranging from residential rooftops to utility-scale power plants.

DC Molded Case Circuit Breaker DC1000V

We use standard arc suppression cover and three-layer free metal partition, to avoid secondary system failures caused by arcing during disconnection.
Reverse the inlet line without reducing capacity.
Anti-humidity, heat, salt spray, and mold resistance.
The new single breakpoint structure is more stable and reliable than the double breakpoint structure.

DC MCCB 320A 2P 1000Vdc

DC MCB 320A

Rated Current (In): 320A

Poles: 2P

Rated Voltage (Ue): 415, 619, 800, 1000, 1140Vdc

Breaking Capacity (Icu): 28kA

Rated Insulation Voltage (Ui): 1200V

Rated Impulse Withstand Voltage (Uimp): 12kV

DC MCCB 400A 3P 1000Vdc

DC MCB 400A

Rated Current (In): 400A

Poles: 3P

Rated Voltage (Ue): 415, 619, 800, 1000, 1140Vdc

Breaking Capacity (Icu): 20kA

Rated Insulation Voltage (Ui): 1200V

Rated Impulse Withstand Voltage (Uimp): 12kV

DC MCCB 630A 4P 1000Vdc

DC MCB 630A

Rated Current (In): 630A

Poles: 3P

Rated Voltage (Ue): 415, 619, 800, 1000, 1140Vdc

Breaking Capacity (Icu): 20kA

Rated Insulation Voltage (Ui): 1200V

Rated Impulse Withstand Voltage (Uimp): 12kV

DC MCCB 320A 2P

Rated Current (In): 320A

Poles: 2P

Rated Voltage (Ue): 750, 1000, 1200, 1500Vdc

Breaking Capacity (Icu): 85kA

Rated Insulation Voltage (Ui): 1600V

Rated Impulse Withstand Voltage (Uimp): 12kV

DC MCCB 400A 3P

Rated Current (In): 400A

Poles: 2P

Rated Voltage (Ue): 750, 1000, 1200, 1500Vdc

Breaking Capacity (Icu): 85kA

Rated Insulation Voltage (Ui): 1600V

Rated Impulse Withstand Voltage (Uimp): 12kV

DC MCCB 400A 3P

Rated Current (In): 630A

Poles: 2P

Rated Voltage (Ue): 750, 1000, 1200, 1500Vdc

Breaking Capacity (Icu): 85kA

Rated Insulation Voltage (Ui): 1600V

Rated Impulse Withstand Voltage (Uimp): 12kV

DC MCCB 250A 3P

Rated Current (In): 320A

Poles: 3P, 4P

Rated Voltage (Ue): 750, 1000, 1200, 1500Vdc

Breaking Capacity (Icu): 50kA

Rated Insulation Voltage (Ui): 1600V

Rated Impulse Withstand Voltage (Uimp): 12kV

DC Molded Case Circuit Breaker DC 1500V

The rated operating voltage to DC1500V and the rated insulation voltage 1500V.
The rated impulse withstand voltage up to 12kV, and rated current 100A~1600A.
You can choose whether the circuit breaker is vertical or horizontal.
It meets the following standards:IEC 60947-1 and IEC 60947-2.

Engineered for Safety, Reliability, and Ease of Use

High DC Breaking Capacity

High DC Breaking Performance (Icu/Ics)

Ensures safe interruption under severe short-circuit conditions, protecting downstream equipment.

Thermal-Magnetic Trip Unit

Reliable Overcurrent Protection

Accurate thermal and magnetic trip elements provide dependable protection against sustained overloads and faults.

Enhanced Arc Extinguishing System

Adjustable Trip Settings

Offers flexibility to fine-tune protection parameters for specific application needs.

Robust Housing for Harsh Environments

Robust Molded Case

Provides excellent insulation, mechanical strength, and environmental resistance.

Contributes to System Resilience

Designed for Panel Integration

Standardized dimensions and mounting points for straightforward installation in switchboards and enclosures.

Flexible Supply with Competitve Price

Diverse accessories

Specify available accessories like Shunt Trips (SHT), Undervoltage Releases (UVR), Auxiliary Contacts (AUX), Alarm Contacts (AL)

Reliable Manufacturing for Your Needs

To make reliable DC molded case circuit breakers , we need precise manufacturing and strict quality control. With over 20 years of experience in electrical component manufacturing, LETOP uses advanced production lines and strict testing procedures to ensure that every DC molded case circuit breaker meets international standards and exceeds industry expectations.

Automated testing

Advanced Manufacturing Capabilities

Our 22,000㎡ state-of-the-art facility houses 16+ automated production lines specifically configured for DC MCCB manufacturing. Each production line incorporates precision assembly equipment, automated calibration systems, and real-time quality monitoring to maintain consistent product excellence. Monthly production capacity exceeds 50,000 DC MCCB units across all voltage and current ratings.

Component Inspection&Quality Checks

Technical Excellence & Support

Our experienced technical team, with average 20+ years DC protection expertise, is available to assist with proper DC MCCB selection, protection coordination studies, and integration guidance for high-power solar system designs. We provide 24-hour technical response, comprehensive application notes, and detailed installation specifications to ensure optimal system performance.

Endurance & Breaking Capacity Testing

Rigorous Testing Protocols

Every DC MCCB undergoes comprehensive validation including high current injection tests, DC interruption capability verification, endurance cycling, and thermal performance evaluation. Our specialized DC testing laboratory features advanced equipment capable of simulating actual solar fault conditions up to 20kA at 1500V DC, ensuring reliable performance in real-world applications.

Trip Curve Calibration & Verification

Quality Assurance Promise

Through ISO 9001:2015 certified processes and zero-defect manufacturing programs, consistent quality and dependable support are delivered with every DC MCCB shipment, backed by our comprehensive 18-month warranty and global technical support network.

DC MCCB Applications in Solar

DC MCCB 320A 2P

Rated Current (In): 320A

Poles: 2P

Rated Voltage (Ue): 750, 1000, 1200, 1500Vdc

Breaking Capacity (Icu): 85kA

Rated Insulation Voltage (Ui): 1600V

Rated Impulse Withstand Voltage (Uimp): 12kV

DC MCCB 400A 3P

Rated Current (In): 400A

Poles: 2P

Rated Voltage (Ue): 750, 1000, 1200, 1500Vdc

Breaking Capacity (Icu): 85kA

Rated Insulation Voltage (Ui): 1600V

Rated Impulse Withstand Voltage (Uimp): 12kV

DC MCCB 400A 3P

Rated Current (In): 630A

Poles: 2P

Rated Voltage (Ue): 750, 1000, 1200, 1500Vdc

Breaking Capacity (Icu): 85kA

Rated Insulation Voltage (Ui): 1600V

Rated Impulse Withstand Voltage (Uimp): 12kV

DC MCCB 250A 3P

Rated Current (In): 320A

Poles: 3P, 4P

Rated Voltage (Ue): 750, 1000, 1200, 1500Vdc

Breaking Capacity (Icu): 50kA

Rated Insulation Voltage (Ui): 1600V

Rated Impulse Withstand Voltage (Uimp): 12kV

Residential Solar Installations

Commercial Solar Systems

Solar Power Plants

Energy Storage Systems

FAQ

Here you can find some of your common questions related to DC MCCB, which can help answer your doubts.

What information is required to give me an accurate quote?

In order to provide an accurate quote, we need to know your desired product model, quantity, customization options (e.g. branding, printing, packaging, etc.), and any specific technical requirements.

Can you provide product samples for testing?

We are happy to provide FREE samples. You only need to provide the courier account number or pay the shipping cost to get FREE samples for testing. Please contact our sales team for more details.

What is the MOQ (minimum order quantity) for an order?

Our MOQ is according to the product and customized service. Please check services. You can also consult our expert team.

Can I get a discount on bulk orders?

Yes, we offer discounts for high volume orders. The discount rate depends on the size of the order and the complexity of the customized service. Please consult our team of experts for specific information.

What is the delivery time?

Our standard delivery time is 7-10 days based on 200 pieces. Specific delivery time will vary according to your order size, degree of customization and our production plan. We will provide an estimated delivery time when quoting.

Do you offer OEM services for MCCB manufacturing?

Yes, we provide complete OEM/ODM services including custom specifications, private labeling, and special packaging.

Can you manufacture MCCB according to specific national standards?

Yes, beyond IEC standards, we can manufacture to UL, JIS, GB, IS, and other national standards as required.

Do you provide MCCB coordination studies and protection selectivity?

Yes, our technical team can provide coordination studies and selectivity calculations for complete electrical system protection.

What's your MCCB testing procedure before shipment?

Every MCCB undergoes electrical testing, mechanical operation testing, insulation resistance testing, and visual inspection before packaging.

What's your policy on MCCB technical obsolescence and product lifecycle?

We guarantee minimum 10-year availability of spare parts and provide advance notice (minimum 2 years) for any product. discontinuation.

If no relevant issues are found, please contact us, E-mail:[email protected].

Get in Touch with Us

If you have any questions, please contact us and we will reply within 24 hours.

Get in Touch

Wenzhou LETOP Electric Co., Ltd.

Address

No. 19, Fenjin Road, Dongfeng Industrial Zone, Yueqing, Wenzhou, China 325604

[email protected]

+86-13175631986

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