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What is a 4P Molded Case Circuit Breaker?

A 4P breaker has four protection poles (3 phases + neutral line), used in three-phase four-wire systems (e.g., 380V/400V). It disconnects phase and neutral lines simultaneously, suitable for scenarios requiring strict neutral line protection.

How do you ensure product quality?

We control raw material quality, implement refined quality control in production, conduct multiple rounds of inspection and testing after completion, and provide after-sales service to comprehensively ensure quality.

Are you a manufacturer? Where is your factory located?

We are a professional manufacturer located in Zibo City, Shandong Province, China. We welcome visits to understand our production process and quality control.

High Breaking Height 3p Molded Case Circuit Breaker 160A

Name: High Breaking Height 3p Molded Case Circuit Breaker 160A
Brand: Shandong Kaichuan Electric Power Equipment Co., LTD
SKU: 2146364112

Shandong, ChinaShandong Kaichuan Electric Power Equipment Co., LTD

US$0.60-1,810.00

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.

160

Speed

High-Speed Circuit Breaker

Arc-extinguishing Medium

Air

Installation

Fixed

Structure

MCCB

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-Function Protection: Provides circuit-breaker failure, overcurrent, overvoltage, and RCCB protection.

High Breaking Capacity: Features high-speed operation and energy-storage type for reliable performance.

Global Certifications: Certified by VDE, ISO9001-2000, CE, CB, and CCC standards.

Customization Options: Supports OEM/ODM, full customization, and flexible design adjustments.

Strict Quality Control: 100% finished product inspection with raw material traceability.

Professional Manufacturer: Located in Zibo, China, with 10+ years of manufacturing experience.

Secure Packaging: Uses carton, cardboard, and wooden boxes complying with export standards.

Flexible Payment Terms: Supports T/T, LC, PayPal, and Western Union for convenience.

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: ≤3.13h

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:What is the difference between 3P and 4P molded case circuit breakers?

3P breakers control three live wires (L1, L2, L3) for three-phase three-wire circuits, suitable for balanced loads. 4P breakers add a neutral wire, suitable for three-phase four-wire systems, allowing simultaneous cutoff of phase and neutral wires to prevent abnormal neutral current.

Q:What are the precautions for wiring 3P molded case circuit breakers?

1. Strictly connect three-phase live wires according to L1, L2, L3 marks to ensure correct phase sequence. 2. Use copper wires or bars with cross-sectional areas matching the rated current to ensure good contact and avoid heating.

Q:What are the reasons for inconsistent tripping of the three phases?

Common reasons include: 1. Tripping mechanism failure (worn/stuck springs or locks). 2. Poor contact of contacts due to oxidation, ablation, or loose wiring. Solutions involve checking/replacing parts, cleaning contacts, or tightening wiring.

Q:What product tests are conducted before leaving the factory?

We conduct comprehensive tests including electrical performance testing, mechanical performance testing, appearance inspection, and temperature rise tests to ensure product quality meets standards.

Q:How do you package the molded case circuit breakers?

We use carton packaging, cardboard box packaging, and wooden box packaging, all complying with international export standards to ensure products are not damaged during transportation.