What is the working principle of the leakage circuit breaker?

It monitors current balance. If leakage causes imbalance (e.g., shock or insulation damage), it detects this and trips quickly to cut off power, protecting personnel and equipment.

How to choose a suitable leakage circuit breaker?

Consider rated current (e.g., 16A, 20A), rated leakage action current (usually 30mA), pole number (single to four-pole), and breaking capacity (e.g., 6kA, 10kA).

Are you a manufacturer with your own factory?

Yes, we are a professional manufacturer with advanced equipment and a technical team. Factory visits are welcome to observe production and quality control.

High-Performance Protection Miniature Residual Current Circuit Breaker 4p

Name: High-Performance Protection Miniature Residual Current Circuit Breaker 4p
Brand: Shandong Kaichuan Electric Power Equipment Co., LTD
SKU: 1987268031

Shandong, ChinaShandong Kaichuan Electric Power Equipment Co., LTD

US$5.09-6.80

1 tower

Product specifications

Size

Sample price:US$21.20/tower.Request sample

Product profile

Customization

Available

Breaking Capacity

Low Voltage Circuit Breakers

Operation

Energy-storage Type

Model NO.

Speed

High-Speed Circuit Breaker

Arc-extinguishing Medium

Air

Installation

Fixed

Structure

RCCB

Poles Number

Type

Circuit Breaker

Function

Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection), RCCB

Certification

VDE, ISO9001-2000, CE, CB, CCC

Transport Package

Wooden Packaging

Specification

300mm*400mm*200mm

Trademark

SDKC

Origin

China

Key features

Multi-Certification Compliance: Certified by VDE, CE, CB, CCC, and ISO9001-2000 for global market access.

Comprehensive Protection Functions: Provides circuit-breaker failure protection, overcurrent protection, and overvoltage protection (OVP).

High-Speed Energy Storage Operation: Features high-speed tripping with energy-storage type operation for reliable performance.

Professional Manufacturer Support: Direct factory source with advanced equipment, professional technical team, and video guidance.

Flexible Customization Options: Supports OEM/ODM services, including customization from samples, designs, and flexible adjustments.

Fast Delivery Capability: Efficient production ensures delivery within 12 days after receiving the deposit.

Strict Quality Control: 100% function inspection on finished products with traceable raw materials.

4-Pole Fixed Installation: Fixed structure RCCB with 4 poles, suitable for specific low-voltage circuit applications.

Company profile

Shandong Kaichuan Electric Power Equipment Co., LTD

Shandong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 1 year CertifiedNearest Port: Qingdao PortAverage Response Time: ≤24h

AI-Powered supplier vetting

SummarySDKC Shandong Kaichuan Electric Equipment Co., Ltd. is described as a high-tech enterprise integrating R&D, manufacturing, trade, and service, with products including electrical control cabinets, motors, frequency converters, electrical components, and high- and low-voltage switchgear. It reports broad customization and ODM capabilities, new products within the past year, and OEM service for well-known brands. Its finished-product inspection instructions are reportedly uniformly followed, while service procedures exist for supplier assessment, corrective actions, and complaints; however, written records are absent for the latter two mechanisms. The supplier reports no overseas warehouse, showroom, agent or branch, or offline trade-show participation, and lists zero overseas service countries. Financial credibility cannot be confirmed because the provided financial fields report zero operating revenue, costs, profits, margins, and ratios for the stated periods, without enough context to validate the...

Supplier typeThe supplier is described as a high-tech enterprise integrating R&D, manufacturing, trade, and service. Its stated business scope centers on producing, processing, and selling electrical control cabinets, motors, frequency converters, switchgear bodies, transformers, and related electrical equipment.

After-Sales capabilityThe supplier has written procedures and records for assessing effective service capability, and reports lead times within 15 workdays in both peak and off-season periods. However, corrective and preventive action and customer-complaint procedures have no written records, while overseas service coverage is limited: zero countries and no overseas warehouse, showroom, agent, or branch.

Financial creditThe supplier reports registered capital and describes itself as a large-scale enterprise, but the financial-capacity slices report zero operating revenue, costs, profits, margins, and current ratios for the stated periods. These figures provide no positive evidence of financial strength and raise a material credibility concern, although the supplied data does not explain whether the zeros reflect actual results or incomplete reporting.

R&D capabilityThe supplier reports R&D capability, at least one new product during the past year, and ODM services. Its company description also identifies R&D as part of its integrated operation, but no usable SDK is available.

Production capacityThe supplier states that it operates manufacturing facilities and equipment including copper-bar processing machinery and an assembly line. Its described production scope covers electrical control cabinets, motors, frequency converters, switchgear, transformers, and related equipment, while finished-product inspection instructions are reportedly available and uniformly followed.

Customization capabilityBoth relevant slices explicitly list customization from samples, designs, full customization, minor customization, and flexible customization. The supplier also reports ODM availability, supporting broad product-development and customization coverage.

Product Q&A

Q:How to test whether the leakage protection function is normal?

Use a dedicated leakage testing instrument to simulate a fault and observe tripping within specified time. Alternatively, press the test button regularly for manual checks. If it fails to trip, repair or replace immediately.

Q:What is the function of the residual current circuit breaker?

It detects current leakage and cuts off power to prevent electric shock or fires. It also provides overload and short-circuit protection.

Q:What is the delivery time?

Delivery is usually completed within 12 days after receiving the deposit, supported by an efficient production process and supply chain.

Q:Does the 4P Leakage Miniature Circuit Breaker need heat dissipation space?

Yes. Leave at least 5mm on sides and 10mm at top/bottom. It can be installed side-by-side if ventilation is good and load current does not exceed rated value.

Q:Is the neutral wire (N) terminal directional?

Usually non-directional, but some models marked 'N' must connect to the neutral wire. L1/L2/L3 connect to live wires, N to neutral. Do not reverse live and neutral wires.