AC Type 4P Residual Current Circuit Breaker RCCB

As a specialized Chinese manufacturer and supplier of AC Type 4P Residual Current Circuit Breaker RCCB, XENHO Factory produces devices featuring a modular design that offers exceptional electrical and mechanical durability. These RCCBs are engineered to withstand complex operating environments—including conditions of high temperature, high humidity, and strong electromagnetic interference—and fully comply with International Electrotechnical Commission (IEC) standards as well as various global certification requirements.

What is an AC Type 4P Residual Current Circuit Breaker RCCB?

The AC Type 4P Residual Current Circuit Breaker RCCB also known as an AC-type 4-pole residual current protective device—is specifically designed to detect residual currents within electrical circuits caused by insulation faults. When the leakage current reaches the device's rated tripping current, it rapidly interrupts the power supply within 0.1 seconds, thereby preventing electric shock hazards and electrical fires.

Its core sensing element utilizes a high-permeability toroidal iron core, paired with a precision electronic control unit, to ensure accurate and reliable response even under complex operating conditions involving AC leakage currents superimposed with pulsating DC components.

The AC Type 4P Residual Current Circuit Breaker RCCB's rated current range spans from 25A to 63A, with a breaking capacity of up to 6kA. It is suitable for terminal power distribution networks operating at single-phase AC 400V or below, and is particularly well-suited for modern electrical loads—such as variable-frequency air conditioners and EV charging stations—that contain minor DC components.

Damage Risk Control Measures

Our AC Type 4P Residual Current Circuit Breaker (RCCB) features a high-strength, flame-retardant engineering plastic housing that effectively withstands external impacts and high-temperature deformation.

It incorporates a built-in bimetallic strip thermal overload protection mechanism to prevent the aging and damage of internal components caused by sustained over-currents.

The wiring terminals are equipped with spring-loaded clamping mechanisms to prevent wire loosening, thereby avoiding arcing or poor electrical contact.

Prior to shipment, all our products undergo a 1.2-meter free-fall test and rigorous temperature cycling verification ranging from -25°C to +85°C, ensuring their structural integrity during transit and in extreme environmental conditions.

Technical Specifications

Rated Voltage: 230V AC 50Hz;

Rated Residual Operating Current: 30mA (Selectable: 10/30/100/300mA);

Number of Poles: 4P;

Mounting Method: DIN rail mounting, compliant with DIN EN 60715;

Rated Impulse Withstand Voltage: 4kV;

Pollution Degree: Degree 3;

Protection Degree: IP20;

Standards Complied With: IEC 61008-1, GB/T 16916.1;

Leakage Protection Type: Type A (detects AC and pulsating DC residual currents);

Mechanical Endurance: ≥10,000 cycles;

Electrical Endurance: ≥6,000 cycles;

Operating Ambient Temperature: -25°C to +65°C;

Storage Temperature Range: -40°C to +85°C.

Product Parameters

Loading and Shipping:

We utilize standardized export-grade wooden crates, each lined with shock-absorbing and moisture-proof film to ensure safety during long-distance transit. We support multimodal transportation—including sea, air, and rail freight—and provide comprehensive end-to-end services covering customs clearance and commercial inspection. Prior to delivery, a thorough performance re-inspection is conducted; the shipment is accompanied by a factory inspection report, a product certificate of conformity, and installation and operation instructions.

FAQ

Q1: What makes the AC Type 4P Residual Current Circuit Breaker RCCB different from standard circuit breakers?

A: Unlike standard breakers that only protect against overload and short circuits, this RCCB specifically detects leakage currents and disconnects power to prevent electric shock and fire risks.

Q2: Can this RCCB be used with modern appliances like EV chargers?

A: Yes, it supports detection of pulsating DC leakage, making it highly suitable for EV charging stations and inverter-based devices.

Q3: How often should the RCCB be tested?

A: It is recommended to test the unit monthly using the test button to ensure proper functionality.

Q4: Is it suitable for harsh environments?

A: Yes, the product is designed to operate in high humidity, temperature extremes, and strong electromagnetic conditions.

Q5: What certifications does the product have?

A: It complies with IEC standards and holds CB, CE, and RoHS certifications, ensuring global compliance.

Contact Us

For any inquiries about our products, please feel free to contact us through the following methods:

WhatsApp / WeChat: 86-13123865875     86-15858812131

Email: 799199031@qq.com