Powered by Made-in-China.com
Mine Flameproof and Intrinsically Safe Vacuum Combination Switch
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 Design: Intrinsically safe for use in mines with explosive gas and coal dust.
PLC Protection System: Adopts PLC + industrial control integrated machine for high accuracy and fast response.
Multi-Function Protection: Covers overload, short circuit, leakage, undervoltage, overvoltage, and phase failure.
Wide Voltage Range: Reliable operation within 75% - 110% of rated control power supply voltage.
Fast Short-Circuit Response: Trip action time is 0.2-0.4s when short-circuit current reaches set multiple.
Phase Sequence Change: Capable of changing phase sequence when stopping motors.
Communication Networking: Supports communication networking for centralized monitoring of mining faces.
OEM/ODM Services: OEM and ODM services are available for custom manufacturing needs.
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: ≤4.27h 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 of this switch?
A:
It is applicable to mines with explosive gas and coal dust for controlling and protecting up to 6 three-phase squirrel cage asynchronous motors.
Q:What protection functions does it offer?
A:
It provides protection against overload, short circuit, leakage, undervoltage, overvoltage, three-phase imbalance, and phase failure.
Q:What is the rated operating voltage?
A:
The rated operating voltage is AC1140V or AC660V at 50Hz.
Q:Is OEM service available?
A:
Yes, OEM service is available for this product.
Q:What is the average lead time?
A:
The average lead time is one month for both peak and off-peak seasons.
Send Inquiry
*To:
Huainan Wantai Electric Co., Ltd.
Huainan Wantai Electric Co., Ltd.*Content:
Supplier replies will be sent to your registered email
You may also like
Flameproof and Intrinsically Safe Vacuum Combination Switch for Underground Coal Mining
US$11,429.00
1 Set(MOQ)
Explosion-Proof and Intrinsically Safe Vacuum Combination Switch for Coal Mine
US$11,429.00
1 Set(MOQ)
Intrinsically Safe Explosion Proof Switch for Sensitive Hazardous Zone Applications
US$5.00
20 Pieces(MOQ)
Mine Use Explosion-Proof and Intrinsically Safe Vacuum Combination Switch
US$11,429.00
1 Set(MOQ)
Compact Flameproof Push Button Switch Box for Panel Mounting Installations
US$5.00
20 Pieces(MOQ)
Mine Explosion-Proof Intrinsically Safe Low-Voltage Permanent Magnet Mechanism Combined vacuum Feed Switch
US$660.00-960.00
1 Piece(MOQ)
Heavy Duty Flameproof Explosion Proof Switch for Mining Equipment Applications
US$5.00
20 Pieces(MOQ)
Vacuum Feeder Switch Mine Flameproof Low-Voltage Permanent Magnetic Mechanism
US$590.00-940.00
1 Piece(MOQ)
Indoor 11kv Sf6 Gas Load Break Switch Fuse Combination Switch Sc6
US$350.00-800.00
1 set(MOQ)
Low Voltage Intelligent Capacitor Module with Reactor and Thyristor Switch
Negotiable
1 Piece(MOQ)
Flameproof Emergency Stop Push Button Switch with Mushroom Head Safety Design
US$5.00
20 Pieces(MOQ)
Flameproof Safe Low-Voltage Permanent Magnet Mechanism Vacuum Feeder Switch for Mining
US$670.00-930.00
1 Piece(MOQ)
New Original Load Switch Set V6c+Kcf3pzc Vcf6c Isolating Switch Sch-Neider
US$100.00-120.00
1 Piece(MOQ)
High-Voltage Vacuum Switch for Mine Explosion-Proof Mobile Substation
US$862.00-1,989.00
1 Piece(MOQ)
High-Voltage Porcelain Isolate Switch (RH-B-11/1200)
US$20.00-200.00
50 Pieces(MOQ)
Manufacturer Supplies Indoor Earthing Switch for Power Engineering
US$150.00
1 set(MOQ)
Medium Voltage Sf6 Load Break Switch
US$480.00-620.00
2 Pieces(MOQ)
Dynamic Reactive Power Compensation Switching Regulator (Thyristor Switch)
Negotiable
1 Piece(MOQ)
Greno Indoor 33kv 36kv Sf6 Gas Load Break Switch Lbs
US$500.00-1,000.00
1 set(MOQ)



















