Explore our catalog of certified Molded Case Circuit Breakers, contacts, and custom engineering accessories.
Acereare Electric, founded in 2015, stands as a premier direct manufacturer integrating advanced R&D, precision production, and global supply for Molded Case Circuit Breakers (MCCB), Air Circuit Breakers (ACB), and structural inner components. Acereare owns two wholly-owned subsidiaries: RuiRui Electric and KeRui Electric. Anchored by over two decades of technical heritage passed down through two generations, the group has scaled to become a trusted global partner for high-level distribution switchgear systems.
Operating out of state-of-the-art manufacturing zones in China, we service over 100 strategic global enterprises. By providing direct component stampings, complex copper contacts, internal auxiliary releases, and fully finished intelligent trip MCCBs, Acereare assures complete vertically integrated control over quality and lead times.
Adhering to our core value of win-win cooperation, we empower clients with premier infrastructure.
One-stop processing featuring 6 distinctive technology lines, high-precision progressive tooling, metal stamping, and automated assembly cells ensuring consistency.
50+ experienced engineering specialists leveraging 3D structural analysis and transient magnetic modeling. Delivering 50+ customized solution prototypes annually.
Dual factories running harmonized U8 ERP configurations. Complete transparency from raw copper incoming audits to finished product outbound dispatching.
Over 150 dedicated testing stations verifying thermal cycles, mechanical operations, short circuit impulse, and dielectric parameters under PLM and MES control.
We configure circuit breaker parameters to match international grids, supplying customized internal accessories, contact assemblies, and stampings under one roof.
All finished assemblies are certified via international channels, offering test data transparency to validate safe performance under challenging local conditions.
In contemporary power systems, maintaining operational continuity while securing infrastructure requires sophisticated protection topologies. Traditional thermal-magnetic trip units respond only to bulk heat accumulation and basic magnetic flux. Modern industrial grids require the customizable flexibility of microprocessor-driven LSIG (Long, Short, Instantaneous, Ground Fault) Trip Units.
"LSIG protection represents the apex of selective coordination in commercial and industrial electrical distribution. By breaking down protection curves into discrete adjustable domains, engineers can isolate faults to the smallest possible branch circuit, eliminating cascading blackouts."
Our ARM5E and ARM3E series adjustable electronic MCCBs integrate digital microprocessors that continuously sample the sinusoidal waveform of three-phase currents. If any phase deviates from the preset parameters, the microprocessor processes the root-mean-square (RMS) current value to trigger the mechanical release mechanism via a low-energy solenoid trip actuator. The four zones of protection include:
Procuring LSIG breakers directly from China's premier ODM clusters like Wenzhou guarantees access to vertically integrated component manufacturing. Acereare owns and produces the primary components required for these high-performance systems:
Acereare circuit breakers are configured to operate reliably in harsh, demanding operational environments.
Utilizes specialized lubricants and impact-resistant internal polymers. Certified via cold-chamber testing to operate down to -40°C, ideal for polar climates and outdoor wind power nacelles.
Engineered for coastal substations and offshore wind farms. Undergoes 72-hour full-machine and 48-hour sub-assembly salt spray test cycles to verify anti-corrosive performance.
At elevated altitudes, reduced air density degrades dielectric strength and thermal dissipation. Our systems apply specific voltage and current derating factors to protect high-altitude installations.
Compact form factors coupled with high interrupting capacity configurations make our MCCB series suitable for space-constrained sub-distribution boards and building switchboards.
Tested in constant-temperature chambers at 55°C. Features heat-insulated enclosures, corrosion-proof copper conductors, and thermal-magnetic calibration adapted for hot industrial facilities.
Our intelligent MCCBs incorporate edge computing, power quality measurement, and Modbus/Ethernet communication, enabling remote sensing, configuration, control, and signaling.
Acereare maintains comprehensive certification profiles, ensuring smooth entry into global industrial markets.
Partnering with Acereare helps you build a solid brand reputation, accelerate market entry, and secure better margins.
We provide customized laser engraving for corporate logos, premium packaging options, rapid prototyping support, and smart mechanical designs that set your products apart from standard market competitors.
Access our comprehensive molding division for design and production tooling. We manage international certification testing (reimbursable models available) and run 24-hour support windows as your offshore manufacturing base.
Bring us your custom requirements. We design tailored circuit protection components, write custom firmware for electronic trip devices, design customized busbars, and support flexible low-volume start-up orders.
Our commitment to continuous innovation guides the progression of our electrical safety products.
Refining standard thermal-magnetic protection and micro-stamping processes, establishing the core ARM1, ARM3, and ARM5 product lines with certified tolerances.
Developing microprocessor-controlled trip units with integrated LCD screens. Achieving precise LSIG trip profiles and introducing Modbus RTU communication capabilities.
Designing digital breakers with integrated edge computing, real-time power analytics, and AI-driven predictive health checks for industrial distribution nodes.
Global grids are evolving rapidly, driven by the growth of renewable energy, distributed storage, and electric vehicle charging infrastructure. Simple overcurrent breakers are no longer sufficient to protect these complex systems; modern grids require intelligent devices capable of identifying bidirectional energy flows and complex fault signatures.
Acereare's upcoming product lines integrate direct real-time communication protocols, allowing operators to monitor thermal profiles and insulation health remotely. This transitions maintenance programs from reactive cycles to predictive interventions, reducing unplanned downtime for critical infrastructure.
Expert technical insights to help guide your system design and procurement decisions.
A: L (Long-time) protects cables from steady-state overloads using a timed delay curve. S (Short-time) introduces a controlled delay to manage localized short circuits without tripping upstream breakers, enabling selective coordination. I (Instantaneous) trips instantly to isolate severe faults, while G (Ground Fault) senses leakage currents to ground, helping prevent insulation fires and equipment damage.
A: Selective coordination ensures that only the breaker closest to a fault opens. If a sub-panel experiences a short circuit, and selective coordination is not established, the main upstream distribution breaker may trip, causing an unnecessary outage across the entire facility. Adjustable LSIG trip units allow engineers to coordinate current and time delays to prevent this cascading effect.
A: Thermal-magnetic breakers rely on bimetallic strips, which are sensitive to ambient air temperature. They must be derated in hot environments like steel mills. Electronic trip breakers use internal microprocessors to measure current directly, making them much less susceptible to ambient temperature changes. For extreme conditions, we offer enclosures calibrated to operate reliably at 55°C or down to -40°C.
A: Quality begins with material verification. As a vertically integrated manufacturer, Acereare produces its own copper contacts and stamping components in-house. We run every batch through rigorous electrical, mechanical, and temperature chamber testing in our ISO-compliant laboratory. Complete trace records from raw materials to final assembly are maintained in our PLM/MES systems.
A: At higher altitudes, thinner air reduces both cooling efficiency and dielectric strength. Breakers installed above 2000m must be derated for both operational voltage and carrying current. Contact our engineering team for altitude derating tables to ensure safe, stable performance in high-altitude environments.
Select from our range of adjustable electronic and thermal-magnetic molded case circuit breakers.
Explore customized ODM components or select finished LSIG circuit protection devices. Partner with an experienced manufacturer focused on quality, reliability, and competitive pricing.
Submit Design Query
AceReare
