NLECB Automatic Reclosing ECB Circuit Breaker for Overload, Short-Circuit & Leakage Protection
This photovoltaic automatic reclosing circuit breaker (ECB) is designed for solar and low-voltage power distribution systems. It provides automatic reclosing functionality and comprehensive protection, including overload, short-circuit, and leakage protection, ensuring stable and reliable operation in harsh environments.
It solves common pain points in solar and smart power systems, such as manual reset issues, system downtime, and safety risks caused by unstable grid conditions. The waterproof design enhances durability and extends product life in outdoor installations.
Key advantages include high reliability, improved safety, reduced maintenance time, and automatic fault recovery. The product complies with international standards and certifications including ISO, CE, RoHS, and GRS, making it suitable for global markets.
OEM and customization services are available to support brand differentiation and specific engineering requirements.
Product Parameters
Manual measurement may have slight errors.
High Conductivity Terminals
Thickened copper terminals, high current
carrying capacity, superior conductivity
Uses hex socket screws
for more secure wiring
High Conductivity Copper Busbars
Five Levels of Circuit Breakers
Adjustable current, convenient to use
800A Adjustable Current
320A 400A 450A 500A 630A 700A 700A 800A
Details Determine Quality
Craftsmanship Beyond Expectations
Material determines conductivity, current carrying capabi-lity, and electrical lifespan of circuit breakers.
High Conductivity Copper Busbars
Precision engineered copper busbars, ample material,
excellent electrical conductivity
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Functional classification |
Function and parameter setting |
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defencive function |
overload protection |
Enable/disable |
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short-circuit protection |
Enable/disable |
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Residual current protection |
Enable/disable |
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autoreclose circuit breaker |
Enable/disable |
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Deficiency protection |
Enable/disable |
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overvoltage crowbar |
Enable/disable |
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undervoltage protection |
Enable/disable |
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The measurement is shown |
Residual current in the line |
real-time monitoring |
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Three-phase working voltage |
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Three-phase working current |
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Performance Settings |
Rated residual operating current |
Protection parameters can be set |
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Overload long delay |
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Short circuit short delay |
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Short circuit transient |
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Overvoltage protection value |
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Under-voltage protection value |
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Time, date |
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Protect investment and exit |
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Information storage, query, display |
Residual current action |
on-line inquiry |
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miscellaneous exercises |
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Communication function |
RS-485、DL/T-20 |
Standard configuration |
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Infrared communication |
apolegamy |
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Main performance indicators
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Shelf grade rated current Inm |
125A |
250A |
400A |
630A |
800A |
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rated current In |
(0.4-1) In is adjustable |
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rated operational voltage Ue |
AC400V |
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Rated insulation voltage Ui |
AC1000V |
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Rated impulse with stand voltage Uimp |
8000V |
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Maximum short circuit breaking capacity Icu |
Type M: 50kA, Type H: 65kA |
Type M: 65kA, Type H: 85kA |
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Operating short |
Type M: 35kA, Type H: |
Type M: 50kA, Type H: 65kA |
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Product Details
OEM & ODM Services
We offer complete OEM & ODM services:
Application
Why Choose EcoNewlink
Shipping & Delivery
After-Sales & Support
FAQs
Explore our FAQ section for clear guidance on orders, shipping, customization, and after-sales service.
MCCB NLECB-250
Does it support global certifications?
Yes, it complies with ISO, CE, RoHS and GRS standards and can be supplied for international markets.
How difficult is installation and maintenance?
Installation is straightforward with clear wiring terminals, and maintenance is minimal due to automatic fault recovery and durable outdoor design.
Where can this product be used?
It is suitable for photovoltaic systems, low-voltage distribution, outdoor ESS/inverter units, and off-grid or smart energy applications.
What protections does this product provide?
It integrates overload, short-circuit and leakage protection for safer operation in solar and low-voltage systems.
Is OEM customization available?
OEM services are available for branding, labeling, parameters and packaging to support distributors and project requirements.
Can it work with solar or hybrid inverter systems?
Yes, it is compatible with PV and hybrid setups where automatic reclosing and multi-protection are required.
Is the product waterproof?
Yes, the housing is designed for outdoor photovoltaic environments with enhanced sealing and weather resistance.
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.
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Address: No.76 Chuangyu road, Zengcheng District, Guangzhou, China
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