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Mining 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
PLC-Based Protection System: Adopts PLC + industrial control integrated machine for high accuracy and fast response.
Comprehensive Motor Protection: Covers overload, short circuit, leakage, undervoltage, overvoltage, and phase failure.
Explosion-Proof & Intrinsically Safe: Designed for mines with explosive gas and coal dust environments.
Multi-Motor Control Capability: Controls and protects up to 6 three-phase squirrel cage asynchronous motors simultaneously.
Phase Sequence Reversal: Capable of changing phase sequence during motor stopping.
Wide Voltage Operating Range: Reliable operation within 75% - 110% of rated control power supply voltage.
Communication Networking: Supports communication networking and power metering functions.
OEM and ODM Services: Customization services available with 57 R&D engineers supporting development.
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: ≤3.30h 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 three-phase motors.
Q:What protection functions does it offer?
A:
It provides protection against short circuit, overload, leakage, undervoltage, overvoltage, three-phase imbalance, and phase failure.
Q:What is the rated operating voltage?
A:
The rated operating voltage is AC 1140V or AC 660V at 50Hz.
Q:Can it control multiple motors at once?
A:
Yes, it can control and protect the starting and stopping of up to 6 three-phase squirrel cage asynchronous motors simultaneously.
Q:Does it support phase sequence changes?
A:
Yes, it can change the phase sequence when stopping the motor.
Send Inquiry
*To:
Huainan Wantai Electric Co., Ltd.
Huainan Wantai Electric Co., Ltd.*Content:
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