Does the starter support phase sequence changes?

Yes, it can change the phase sequence when stopping.

What certifications does the product hold?

The product holds ISO9001 and CCC certifications.

What is the rated voltage for this starter?

It is applicable for AC 50Hz circuits with a rated voltage of AC 1140V or 660V.

Mining Explosion-Proof and Intrinsically Safe Multi-Loop Vacuum Electromagnetic Starter

Name: Mining Explosion-Proof and Intrinsically Safe Multi-Loop Vacuum Electromagnetic Starter
Brand: Huainan Wantai Electric Co., Ltd.
SKU: 1933580375

Anhui, ChinaHuainan Wantai Electric Co., Ltd.

US$22,857.00

1-4 Sets

US$22,800.00

5+ Sets

Product profile

Customization

Available

Certification

ISO9001, CCC

Protection

Corrosion Resistance

Model NO.

QJZ3-2400/1140(660)-8ML

Installation

Vertical

Housing

Cast Iron

Action Time

0.2-0.4s

Transport Package

Wooden Box

Specification

1140 (660) V

Trademark

Wantai Group

Origin

China

HS Code

8504231100

Production Capacity

10000sets/Year

Key features

Explosion-Proof & Intrinsically Safe: Designed for use in coal mines with explosive gas and coal dust environments.

Multi-Loop Motor Control: Controls and protects up to 8 three-phase squirrel cage asynchronous motors simultaneously.

Advanced PLC Protection System: Integrates PLC with industrial control for high-precision data processing and fast response.

Comprehensive Protection Functions: Covers overload, short circuit, leakage, undervoltage, overvoltage, and phase failure.

Fast Action Time: Short-circuit protection trips within 0.2 to 0.4 seconds.

Wide Voltage Operating Range: Reliably works within 75% to 110% of rated control power supply voltage.

Phase Sequence Reversal: Capable of changing phase sequence during the stopping process.

Communication Networking: Supports power metering and communication networking for centralized monitoring.

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: ≤4.98h 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 maximum number of motors this starter can control?

It can control and protect up to 8 three-phase squirrel cage asynchronous motors at the same time.

Q:Is this equipment suitable for coal mines?

Yes, it is an explosion-proof and intrinsically safe type suitable for mines with explosive gas and coal dust.

Q:What protection functions does the switch offer?

It provides protection against short circuit, overload, leakage, undervoltage, overvoltage, three-phase imbalance, and phase failure.

Q:How fast is the short-circuit protection action time?

The action time is between 0.2 and 0.4 seconds when the main circuit current reaches the set short-circuit multiple.

Q:What is the operating voltage range for the control power supply?

The switch works reliably within 75% to 110% of the rated control power supply voltage.

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Mining Explosion-Proof and Intrinsically Safe Multi-Loop Vacuum Electromagnetic Starter