Can this breaker be used for overcurrent protection in AC systems?

No, it is optimized for DC circuits. Using it in AC systems could lead to unsafe conditions and failure to trip correctly.

What does the thermal-magnetic tripping mechanism do?

It combines thermal protection for sustained overloads and magnetic protection for sudden short circuits to ensure comprehensive safety.

What is the typical lifespan of a Siemens 3VC6937-6BL11 circuit breaker?

The lifespan depends on usage and maintenance but is designed for tens of thousands of operational cycles when used within rated capacity.

Where can I find detailed technical specifications or a user manual?

Detailed specs and manuals are available on the official Siemens Industry Automation website or through authorized Siemens distributors.

Siemens 3VC6937-6BL11 Compact Low-voltage DC Molded Case Circuit Breaker

Name: Siemens 3VC6937-6BL11 Compact Low-voltage DC Molded Case Circuit Breaker
Brand: Beijing Zhongping Technology Co., Ltd.
SKU: 2128229362

Beijing, ChinaBeijing Zhongping Technology Co., Ltd.

US$50.00-1,200.00

1 Piece

Product profile

Customization

Available

Breaking Capacity

Low Voltage Circuit Breakers

Operation

Electric Type

Model NO.

3VC6937-6BL11

Speed

Normal Type Circuit Breaker

Arc-extinguishing Medium

Air

Installation

Rail Type

Structure

MCCB

Poles Number

Type

Circuit Breaker

Function

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

Certification

VDE, ISO9001-2000, CE, CB, CCC

Transport Package

Carton

Specification

unit

Trademark

SIEMENS

Origin

Germany

HS Code

8536200000

Production Capacity

1000/Year

Key features

High DC Voltage Handling: Safely manages up to 1000V DC for high-power systems.

Compact Design: Space-saving footprint ideal for limited control panels.

Robust Protection: Thermal-magnetic trip unit protects against overloads and short circuits.

Versatile Applications: Suitable for PV systems, UPS, data centers, and EVs.

Easy Installation: Designed for DIN rail or panel mounting with straightforward connections.

Advanced Arc Extinction: Effective arc quenching ensures safe interruption of DC currents.

Multiple Certifications: UL Recognized, CE, and CCC certified for global compliance.

Company profile

High Repeat Buyers ChoiceIn-stock CapacityLow MOQ100% Finished Products Inspection

Beijing Zhongping Technology Co., Ltd.

Beijing, China

CertifiedBusiness Type: Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 3 years CertifiedNearest Port: Tianjin PortAverage Response Time: ≤2.62h

AI-Powered supplier vetting

SummaryThe supplier is identified as a professional technical supplier providing 3D software design, ODM, industrial automation, product sales, installation, commissioning, maintenance, and repair services. It supports extensive customization and has documented finished-product inspection instructions, quality assurance, and stated lead times within 15 working days in both peak and off-peak seasons. However, it has no overseas showrooms, agents, branches, or offline trade-show experience, and no new products were developed in the past year. Supplier-management, corrective-action, and complaint-handling procedures exist but lack written records. Certification is listed as NIL, quality-control staffing is below five, and R&D engineer experience totals two years. Export activity is established, with 31%–40% of sales from exports and three years of export experience. Evidence of specific customer cases is not provided.

Supplier typeThe supplier explicitly identifies itself as a professional technical supplier and provides industrial automation-related one-stop services, including product sales, solutions, installation and commissioning, maintenance, and repair. Its stated focus covers cement, packaging, printing, rubber, textile, and machine-tool industries.

CertificationsSupplier management system certification is explicitly recorded as NIL. The provided information therefore does not demonstrate possession of relevant certifications.

After-Sales capabilityThe supplier states that it provides installation, commissioning, maintenance, and repair services and has a quality-assurance system. However, it has no overseas showroom, agent, or branch, and its complaint-handling procedure has no written records, limiting evidence of formalized after-sales execution.

Production capacityThe supplier reports lead times within 15 working days during both peak and off-peak periods, maintains written and uniformly followed finished-product inspection instructions, and lists annual production output above the stated threshold. Nevertheless, quality-control staffing is below five and the service-capability assessment procedure has no records.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. The same capability is confirmed in two slices, providing direct evidence of broad customization coverage.

Product Q&A

Q:What is the primary function of the Siemens 3VC6937-6BL11 circuit breaker?

The primary function is to protect electrical circuits from overcurrent conditions by automatically interrupting electricity during overloads or short circuits to prevent fire and equipment damage.

Q:Can this circuit breaker be used in AC applications?

No, it is specifically designed for DC applications up to 1000V DC. Using it in AC systems can lead to improper operation and safety hazards.

Q:How do I troubleshoot a tripped Siemens 3VC6937-6BL11 circuit breaker?

Identify the cause, unplug devices to isolate issues, check for damage, then reset by moving the handle to OFF and then ON. If it trips again, professional inspection is needed.

Q:What is the breaking capacity of the Siemens 3VC6937-6BL11?

It varies by sub-model but can handle up to 100kA, providing robust protection against severe short circuits in industrial DC applications.

Q:How do I perform a test on the Siemens 3VC6937-6BL11?

Ensure the breaker is ON, press the test button to verify the tripping mechanism. If it does not trip, it may need replacement or professional testing.