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Explosion-Proof and Intrinsically Safe Vacuum Combination Switch in Mine
US$11,429.00
1 Set
Product profile
Customization
AvailableCertification
ISO9001, CCCProtection
Corrosion ResistanceModel NO.
QJZ-4*400/1140(660)Installation
VerticalHousing
Cast IronTransport Package
Wooden BoxTrademark
Wantai GroupOrigin
ChinaHS Code
8504231100Production Capacity
10000sets/YearKey features
Explosion-Proof Safety: Intrinsically safe design for mines with explosive gas and coal dust.
PLC Intelligent Control: Adopts PLC + industrial control for high protection accuracy and fast response.
Comprehensive Protection: Protects against overload, short circuit, leakage, undervoltage, and phase failure.
Wide Voltage Range: Reliable operation within 75%-110% of rated control power supply voltage.
Multi-Motor Control: Controls and protects up to 6 three-phase squirrel cage asynchronous motors.
Communication Networking: Supports power metering and communication networking for centralized monitoring.
Customization Support: ODM and OEM services available for tailored industrial solutions.
Certified Quality: ISO9001, CCC, and CE certified for corrosion resistance and safety.
Company profile

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2009-09-02 CertifiedNearest Port: Shanghai PortAverage Response Time: ≤4.79h CertifiedTerms of Payment: LC, T/T, PayPal, etc.
AI-Powered supplier vetting
SummaryHuainan Wantai Electric Co., Ltd. is a China-based limited company established in 2009, operating in mining electronics and related electrical equipment. The supplier reports ISO9001:2015, ISO14001:2015, and OHSAS18001:2007 certifications, three government-recognized R&D institutions, and 57 years of cumulative R&D engineer experience. Its stated capabilities include development, production, sales, and service, with products such as mine soft starters, feeder switches, lamps, automation systems, switch cabinets, and protection devices. Evidence also indicates a manufacturing plant of 41,708 m², regional sales coverage across multiple Chinese provinces, and dedicated sales and post-sales personnel. However, the provided information does not establish detailed financial strength, customer-specific case studies, or explicit customization processes.
Supplier typeThe supplier is identified as Huainan Wantai Electric Co., Ltd., a Chinese limited company based in Anhui. Its stated activities combine development, production, sales, and service for mining electronic and electrical products, although another record describes its company nature as a trading company.
CertificationsThe supplier explicitly reports ISO9001:2015 quality certification, ISO14001:2015 environmental certification, and OHSAS18001:2007 certification, with ISO9001 also referenced in its company description. These certifications support documented quality, environmental, and occupational health and safety management systems.
After-Sales capabilityThe supplier states that it has experienced sales and post-sales members and describes its business as integrating development, production, sales, and service. This supports the existence of after-sales resources, but no response-time, service-network, spare-parts, or technical-support metrics are provided.
R&D capabilityThe supplier reports three government-recognized R&D institutions and 57 years of total R&D engineer experience. Its stated product-development goal is to deliver safer, more energy-saving, and more efficient system solutions, indicating established R&D resources and innovation orientation.
Production capacityThe supplier reports 371 employees in one company record and 500 employees in a company description, a 41,708 m² manufacturing plant, and an integrated development and production operation. It also claims ready production facilities and broad mining-electronics product coverage, supporting substantial production capability, although verified capacity and output figures are not provided.
Product Q&A
Q:What is the main application scenario for this switch?
A:
It is applicable to mines with explosive gas and coal dust, suitable for centralized monitoring of mining, transportation, and working faces with concentrated power loads.
Q:What protection functions does the switch offer?
A:
It provides overload, short circuit, leakage blocking, undervoltage, overvoltage, three-phase imbalance, phase failure, and power metering protections.
Q:What is the rated voltage range?
A:
The switch supports AC 50Hz with rated voltages of AC 1140V, 660V, or 380V depending on the model.
Q:How many motors can be controlled simultaneously?
A:
It can control and protect the starting and stopping of 6 or less three-phase squirrel cage asynchronous motors at the same time.
Q:What is the short-circuit protection action time?
A:
When the main circuit current reaches the set short-circuit multiple, the action time is 0.2-0.4 seconds.
Send Inquiry
*To:
Huainan Wantai Electric Co., Ltd.
Huainan Wantai Electric Co., Ltd.*Content:
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