RCBO Circuit Breakers for Complete Electrical Protection
An RCBO (Residual Current Breaker with Overcurrent Protection) is designed to provide complete circuit protection by combining leakage, overload, and short circuit protection in one device. It is widely used in modern electrical systems for enhanced safety and efficiency.
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MOREDAY RCBO Product Lineup - Complete Technical Specifications
MDB2L-63 B3 Series
- Rated Current: 6A–63A
- Rated Voltage: 230V / 400V
- Sensitivity: 30mA / 100mA / 300mA
- Poles: 1P+N / 2P
- Breaking Capacity: 6kA / 10kA
- Trip Curve: B / C
- Frequency: 50/60Hz
- Installation: DIN rail
MDB2L-63 H Series
- Rated Current: 6A–63A
- Rated Voltage: 230V / 400V
- Sensitivity: 30mA / 100mA / 300mA
- Poles: 1P+N / 2P
- Breaking Capacity: 6kA / 10kA
- Trip Curve: B / C
- Frequency: 50/60Hz
- Installation: DIN rail
MDB2L-63 L3 Series
- Rated Current: 6A–63A
- Rated Voltage: 230V / 400V
- Sensitivity: 30mA / 100mA / 300mA
- Poles: 1P+N / 2P
- Breaking Capacity: 6kA / 10kA
- Trip Curve: B / C
- Frequency: 50/60Hz
- Installation: DIN rail
MDB2L-63 Series
- Rated Current: 6A–63A
- Rated Voltage: 230V / 400V
- Sensitivity: 30mA / 100mA / 300mA
- Poles: 1P+N / 2P
- Breaking Capacity: 6kA / 10kA
- Trip Curve: B / C
- Frequency: 50/60Hz
- Installation: DIN rail
MDB2L-63H L5 Series
- Rated Current: 6A–63A
- Rated Voltage: 230V / 400V
- Sensitivity: 30mA / 100mA / 300mA
- Poles: 1P+N / 2P
- Breaking Capacity: 6kA / 10kA
- Trip Curve: B / C
- Frequency: 50/60Hz
- Installation: DIN rail
Why Choose MOREDAY?
MOREDAY is a professional manufacturer with over 17 years of experience in designing, producing, and exporting miniature circuit breakers. Located in Yueqing – China’s “Electric Device Metropolis” – we serve distributors, contractors, and electrical engineers across 30+ countries with high-quality, IEC/CE/RoHS certified circuit protection solutions.
- From DC components to energy storage solutions, MOREDAY provides a complete portfolio to support solar, EV charging, and low-voltage electrical applications.
- Equipped with advanced production lines and strict QC processes, we ensure consistent product performance and long-term reliability.
- All products comply with international standards such as IEC, CE, and RoHS, making them suitable for projects across Europe, Asia, and beyond.
- Flexible customization options including branding, specifications, and packaging help you adapt to different market demands and grow your business.
- With rich export experience, MOREDAY offers fast response, stable delivery, and technical support to ensure smooth cooperation and long-term partnership.
RCBO vs RCCB: Key Differences
RCBO protects from earth faults and overcurrent. In contrast, RCCB protects from earth faults only. Furthermore, an RCBO generally has a higher initial cost compared to an RCCB. That’s why many people tend to connect the RCCB to an MCB for the same protection as an RCBO provides.
| Feature | RCBO | RCCB |
|---|---|---|
| Leakage Protection | ✔ | ✔ |
| Overload Protection | ✔ | ✘ |
| Short Circuit Protection | ✔ | ✘ |
| Cost | Higher | Lower |
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More Than Just a MCB Manufacturer
At MOREDAY, we go beyond manufacturing MCBby offering a suite of value-added services tailored to meet your project needs. Our commitment to excellence ensures that every customer receives personalized attention, expert guidance, and seamless support throughout their journey with us.
Technical Consultation
Our engineering team provides professional DC protection design support for solar PV systems. From breaker selection to full combiner box configuration, we help you ensure safety, compliance, and long-term reliability.
OEM & Custom Solutions
We support logo printing, customized voltage ratings, special tripping curves, and private label packaging. MOREDAY helps distributors and project contractors build competitive branded products for local markets.
Certified Quality Assurance
Our products comply with CE, CB, and TÜV standards. Each unit undergoes strict testing for breaking capacity, temperature rise, and durability to meet international project requirements.
Global Project Experience
MOREDAY products are widely used in solar power plants, energy storage systems, EV charging stations, and industrial applications across Europe, Asia, and Africa.
Knowledge About RCBO
- What is an RCBO?
A Residual Current Operated Circuit Breaker (RCBO) is a critical safety measure when protecting electrical circuits.
- What is the difference between RCBO and RCCB?
RCBO protects from earth faults and overcurrent. In contrast, RCCB protects from earth faults only.
- Where should RCBO be used?
It is commonly used for circuits powering lighting, sockets, and high-power appliances like ovens or washing machines.
- Is RCBO better than MCB + RCCB?
An RCBO-based setup offers individual circuit protection and maximum reliability at a higher price.
- What does 30mA RCBO mean?
For residential applications, an RCBO with a 30mA rating is standard, providing protection against electric shock.
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We provide samples for free, you just need to tell us what you need