EcoNewlink DC MCB 125A Circuit Breaker

Reliable DC MCB 125A circuit breaker from EcoNewlink—designed for PV, battery energy storage and solar inverter protection. High-quality manufacturing, global certifications, and OEM/ODM support.
Rated Current
63A,80A,100A,125A
Model
NLDB1Z-125
Rated frame current
125A
Compliant with standards
GB/T 10963 ,IEC/EN 60898
Ui (Rated insulation voltage)
500V
Uimp (Rated impulse withstand Uimpvoltage Uimp)
6KV
Rated voltage
DC125V(1P),250V(2P)
Tripping curve
B(3In-5ln),C:(5In-10ln),D:(10In-15ln)
Number of poles
1P, 2P, 3P , 4P
Unipolar width
27.0mm
lcu (Ultimate short-circuit breaking capacity)
6kA/10kA
Ics (Operating short-circuit breaking capacity)
6kA/7.5kA
Reference temperature
30℃
Usage Category
A
Mechanical life
10,000 cycles
Electrical lifespan
≥1500 cycles
Protection grade
Ip20
Wiring capacity(mm 2 )
50
Connection
Both upper and lower incoming lines are acceptable
Standard
IEC/EN 60898 / GB/T 10963
Product Description

Product Overview

The EcoNewlink DC MCB 125A circuit breaker is a high-performance molded case DC circuit breaker engineered for safe, reliable overcurrent and short-circuit protection in DC systems. Built for solar PV arrays, battery energy storage systems (BESS), solar inverters and other DC applications, this DC MCB 125A combines robust construction with precise protection characteristics to keep your system stable and secure.

Key Features

  • Rated current: 125A DC — ideal for medium- to high-current solar and storage strings.
  • Reliable DC tripping mechanism to prevent nuisance trips and ensure fast fault isolation.
  • Compact molded case design for easy panel integration and space-saving layouts.
  • High mechanical and electrical endurance for long service life.
  • Global certifications and strict production controls (≤0.01% defect rate).
  • OEM/ODM customization available to match project and grid requirements.

Applications

Perfect for PV combiner boxes, solar inverter inputs, battery energy storage systems, EV charging infrastructure and off-grid DC distribution. The DC MCB 125A circuit breaker is compatible with a wide range of renewable energy and industrial DC setups.

Why Choose EcoNewlink

Founded in 2018 and based in Guangzhou’s Ping An Silicon Valley, EcoNewlink (a subsidiary of CHTK Electronics) brings 15+ years of manufacturing experience to intelligent power distribution. We operate 5 automated production lines under 5S standards and produce up to 10,000 units daily. Our R&D collaborations with Tsinghua, Zhejiang and Xiamen Universities and partnerships with industry leaders like Schneider, BYD and CHINT demonstrate our commitment to expertise and trustworthiness.

Quality, Safety and Service

Every DC MCB 125A undergoes stringent testing and is built to meet international quality standards. We offer technical support, customizable solutions, and fast OEM/ODM delivery for electrical panel builders, EPC contractors and system integrators. For inquiries and custom orders, contact us at nali@newlink.ltd.

The EcoNewlink DC MCB 125A circuit breaker delivers dependable DC protection with the manufacturing quality and global certifications you expect—simple to install, easy to maintain, and engineered for long-term reliability.

Picture Show

  • 120A 375VDC RELIABLE SOLAR PV PROTECTION 3P DC MCB.jpg
  • 125A 250VDC RELIABLE SOLAR PV PROTECTION 2P DC MCB.jpg

Our Certifications

  • Newlink-MCCB-Manufacturer-OCCUPATIONAL-HEALTH-AND-SAFETY-MANAGEMENT--SYSTEM-CERTIFICATION--CERTIFICATE

    Newlink-MCCB-Manufacturer-OCCUPATIONAL-HEALTH-AND-SAFETY-MANAGEMENT-SYSTEM-CERTIFICATION--CERTIFICATE

  • Newlink-Manufacturer-ROHS-Certificate-eletic-meters

    Newlink-Manufacturer-ROHS-Certificate-eletic-meters

  • Newlink-Manufacturer-ISO-Certificate-Current-transformer-Fuse

    Newlink-Manufacturer-ISO-Certificate-Current-transformer-Fuse

Q&A

Do you support OEM and customized specifications?

Yes. As a source manufacturer, we provide OEM branding, customized current ratings, packaging design, and technical solutions based on your project requirements.

Can this current transformer be used for both energy metering and relay protection?

No. One current transformer should be used either for energy metering or for relay protection, not both at the same time, to ensure measurement accuracy.

Are your products suitable for international markets?

Yes, our products are widely exported to over 20+ countries and regions, including:

  • Europe
  • North America
  • Middle East
  • Southeast Asia

All products are designed to comply with international electrical standards and project requirements, making them suitable for global distribution and engineering applications.

What is an automatic reclosing circuit breaker?

It is a circuit breaker that automatically restores power after a fault by performing reclosing cycles, reducing downtime and manual resets.

If you have any other questions, please write email to us or call us , we will reply you as soon as possible.

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Guangzhou EcoNewlink Technology Co.,Ltd
No.76 Chuangyu road, Zengcheng District, Guangzhou, Guangdong, China.

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anti backflow energy meter
molded case circuit breaker
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