CBRM5EL Automatic Reclosing MCCB
CBRM3EL Remote Reclosing MCCB
CBRM5E Intelligent MCCB
CBRM5EKd Electronic MCCB
CBRM5Kd Compact MCCB
CBRM5K Lockable MCCB
CBRM5EN Primary-secondary Separated MCCB
CBRECB Meter Remote Control MCCB
CBRB7BL Type B Smart RCBO
CBRB7 Compact MCB
CBRB7-AP PV Grid-connected MCB
CBRW3 4000A ACB
CBRW3 2500A ACB
CBRW3 1600A ACB
0102030405
Smart Low-Voltage Circuit Breakers | D&T Intelligent MCCB Solutions
2026-07-14
Smart Low-Voltage Circuit Breakers: Powering the Future of Electrical Distribution
Introduction
As smart grids, renewable energy, and digital power management transform the electrical industry, traditional Circuit Breakers are no longer enough. Today's facilities need devices that monitor, measure, communicate, and self-diagnose in real time.
D&T (Zhejiang Deling Technology Co., Ltd.) — a National High-Tech Enterprise and "Little Giant" specialized manufacturer — delivers intelligent low-voltage circuit breaker solutions for smart grids, photovoltaic systems, data centers, and industrial facilities worldwide.
Why Smart Circuit Breakers?
A standard mccb only protects against overloads and short circuits. Asmart MCCB adds:
- Real-time energy metering (Class 0.5S accuracy)
- Remote monitoring & control via cloud or mobile app
- Auto-reclosing to restore power within seconds after transient faults
- Predictive maintenance through temperature sensing and fault logging
- IoT connectivity via RS-485, HPLC, Bluetooth, and 4G
The result: less downtime, lower maintenance costs, better energy efficiency, and improved safety.
About D&T
Founded in 2007 and based in Yueqing, Wenzhou — China's electrical manufacturing hub — D&T is a publicly listed NEEQ enterprise (Stock Code: 835881) focused on smart LV breakers and power distribution systems.
Key highlights:
- 37,000 m² modern factory with 21 production lines
- 5,000+ MCCB units produced daily
- 42 R&D engineers, 162 patents
- USD 29M annual revenue
- Certified National High-Tech Enterprise & "Little Giant" Enterprise
Our Mission: Make electricity safer, more efficient, and smarter.
Flagship Product: CBRM5E Smart MCCB
The CBRM5E series is our most advanced platform — combining protection, metering, control, and communication in one ultra-compact unit.
Core Features
- All-in-One Design — Primary-secondary integration simplifies wiring and saves space
- Real-Time Data Analytics — Millisecond monitoring of voltage, current, and power with cloud upload
- Four-Way Remote Control — Monitor and operate breakers from anywhere, cutting on-site maintenance
- Fast Auto-Reclosing — Restores power within seconds after transient faults like lightning surges
- Intelligent Protection — Auto-detects faults and trips instantly to safeguard equipment
- PV & Smart Grid Ready — Seamlessly integrates with solar, storage, and digital grid systems
Full Product Range
| Series | Highlights | Applications |
|---|---|---|
| CBRM3EL/5EL | RCD protection, auto-reclosing, prepaid cost control | PV grid-connection, metering boxes |
| CBRM5EN/5ENCL | Primary-secondary separation, hot-swappable modules | Distribution automation |
| CBRM5Kd | Compact, 100kA breaking capacity, DEKRA certified | Export markets |
| CBRB7BL | Smart MCB, Type B DC-tolerant leakage protection | EV charging piles, PV systems |
| CBRW3 ACB | Up to 4000A / 1140V air circuit breaker | Heavy industry, power generation |
Key Applications
- Industrial & Commercial — Factories, malls, and office buildings
- Solar & New Energy — PV grid-connection with islanding protection
- Smart Grids — Fast fault location and distribution automation
- Critical Infrastructure — Data centers, hospitals, metro systems
- EV Charging — Type B RCDs for DC leakage protection
- Rural Grid Upgrade — Smart JP cabinets and remote management
Why Partners Choose D&T
1. Integrated R&D Capability
Our 42-person team covers structural, electronic, and software engineering — delivering truly optimized intelligent products, not just add-on modules.
2. Precision Manufacturing
In-house SMT workshop and rigorous 5-step production process (assembly → calibration → aging → re-calibration → testing) ensure consistent quality at scale.
3. In-House Laboratory
Environmental, EMC, and temperature-rise testing on-site for rapid validation and strict quality control.
4. Proven with Industry Leaders
Trusted ODM partner to CHINT, DELIXI, BULL, Schneider, NARI, XJ Group, and more. Deployed in major projects including:
- Xiong'an Intelligent Transformer Station (30,000 units)
- Shandong PV Grid Upgrade (65,000 units)
- Xi'an Metro (20,000 units)
5. Global Compliance
IEC 60947-2, DEKRA certified, ISO 9001 / 14001 / 45001 management systems.
Your ODM Partner
With 60% ODM business, we excel at collaborative custom development — from specialized grid-standard breakers to white-label smart MCBs. Dedicated inventory reserves for key clients ensure prompt delivery.
Get in Touch
Whether you need a reliable smart breaker supplier, custom ODM development, or technical consultation, our team is ready to help.
Contact D&T today for product specs, samples, or a custom quote — and let's build a smarter electrical future together.
Zhejiang Deling Technology Co., Ltd. — Specializing in circuit breakers for 20 years.