Is OEM or ODM service available?

Yes, OEM and ODM services are available for customized requirements.

What are the payment terms?

Payment terms include LC, T/T, PayPal, and Western Union.

What is the lead time for production?

The average lead time is one month for both peak season and off season.

Flameproof and Intrinsically Safe Vacuum Combination Switch for Underground Coal Mining

Name: Flameproof and Intrinsically Safe Vacuum Combination Switch for Underground Coal Mining
Brand: Huainan Wantai Electric Co., Ltd.
SKU: 949635035

Anhui, ChinaHuainan Wantai Electric Co., Ltd.

US$11,429.00

1 Set

Product profile

Customization

Available

Certification

ISO9001, CCC

Protection

Corrosion Resistance

Model NO.

QJZ-4*400/1140(660)

Installation

Vertical

Housing

Cast Iron

Transport Package

Wooden Box

Trademark

Wantai Group

Origin

China

HS Code

8504231100

Production Capacity

10000sets/Year

Key features

Advanced PLC Protection: Adopts PLC + industrial control integrated machine for high protection accuracy and fast response speed.

Comprehensive Safety Functions: Provides overload, short circuit, leakage blocking, undervoltage, overvoltage, and phase failure protection.

Explosion-Proof Design: Intrinsically safe and flameproof, suitable for mines with explosive gas and coal dust.

Multi-Motor Control: Controls and protects starting/stopping of up to 6 three-phase squirrel cage asynchronous motors simultaneously.

Wide Voltage Adaptability: Reliably works within 75%-110% of rated control power supply voltage.

Fast Short-Circuit Response: Short-circuit protection trips with an action time of 0.2-0.4s when current reaches set multiples.

Communication & Networking: Supports power metering and communication networking for centralized monitoring of mining faces.

Customizable OEM/ODM: OEM and ODM services are available for customized mining equipment solutions.

Company profile

Huainan Wantai Electric Co., Ltd.

Anhui, China

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: ≤3.88h 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 vacuum combination switch?

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 provide?

It offers short circuit, overload, leakage, open-phase, undervoltage, overvoltage, three-phase imbalance, and phase failure protection, along with power metering and communication networking.

Q:What is the rated operating voltage?

The rated operating voltage is AC1140V or AC660V at 50Hz.

Q:How many motors can be controlled simultaneously?

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 action time for short-circuit protection?

When the main circuit current reaches the set short-circuit multiple, the short-circuit protection trips with an action time of 0.2-0.4s.