Does the manufacturer provide OEM or ODM services?

Yes, the manufacturer offers both OEM and ODM services, supported by 57 R&D engineers and a large production facility.

What are the payment terms and lead times?

Payment terms include LC, T/T, PayPal, and Western Union. The average lead time is one month for both peak and off-seasons.

What certifications does the product hold?

The product holds ISO9001, CCC, and CE certifications, ensuring compliance with safety and quality standards.

Explosion-Proof and Intrinsically Safe Vacuum Combination Switch for Underground Coal Mine

Name: Explosion-Proof and Intrinsically Safe Vacuum Combination Switch for Underground Coal Mine
Brand: Huainan Wantai Electric Co., Ltd.
SKU: 949634735

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

Intrinsically Safe Design: Explosion-proof and intrinsically safe for use in mines with explosive gas and coal dust.

PLC Integrated Protection: Adopts PLC + industrial control integrated machine for high-precision data processing and fast response.

Multi-Function Protection: Provides overload, short circuit, leakage, undervoltage, overvoltage, and phase failure protection.

Wide Voltage Operation: Works reliably within 75%-110% of rated voltage and releases at 20%-60% of rated control power.

Phase Sequence Control: Capable of changing phase sequence when stopping motors for centralized monitoring applications.

Communication Networking: Supports power metering and communication networking for integrated mine management.

Fast Short-Circuit Response: Short-circuit protection trips within 0.2-0.4s when main circuit current reaches set multiple.

OEM/ODM Services: Manufacturer offers OEM and ODM services with 57 R&D engineers and extensive production capacity.

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: ≤4.82h 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?

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?

It provides multiple protections including short circuit, overload, leakage, open-phase, undervoltage, overvoltage, three-phase imbalance, and phase failure.

Q:What is the rated voltage range for this product?

The rated voltage is AC 1140V or 660V (some models also support 380V), with AC 50Hz frequency.

Q:How many motors can this switch control 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 are the available models and their rated currents?

Models include QJZ2-30/60A, 80A, 120A, 200A, 315A, 400A, 500A, and 630A, with corresponding dimensions and weights varying by model.