Can I mix different models in one container?

Yes, different models can be mixed in one container, even within a single order.

How do you handle quality control?

Quality is our priority. Every product is fully assembled and carefully tested before packing and shipping.

Can you sell spare parts?

Yes, we sell spare parts for CHZIRI products, but we do not sell half-finished products.

Do you have export rights?

Yes, CHZIRI Electrical has the right to export and sell electrical products worldwide.

Can the inverter connect with a computer?

Yes, all inverters have a built-in RS485 port and support the Modbus communication protocol.

How can I trust your company?

We are an ISO9001, CE, and CCC approved company and a Made-in-China gold supplier since 2008.

What is the return policy?

Returns must be pre-approved. We only accept returns with the original package and no man-made damage.

Variable Frequency Drive AC Drive VFD Frequency Variator 3.7kw Input 3 Phase

Name: Variable Frequency Drive AC Drive VFD Frequency Variator 3.7kw Input 3 Phase
Brand: Zhejiang Ziri Electrical Technology Co., Ltd.
SKU: 933894685

Zhejiang, ChinaZhejiang Ziri Electrical Technology Co., Ltd.

US$144.00

1-10 Pieces

US$135.00

11-49 Pieces

US$124.00

50+ Pieces

Sample price:US$135.00/piece.Request sample

Product profile

Customization

Available

Application

to Drive and Control The Speed of The Motor

Output Type

Triple

Model NO.

ZVF300H-G3R7/P5R5T4MD

Principle of Work

SVC Control , V/F Control. Torque Control

Switch Mode

PWM Control

Main Circuit Type

Voltage

Voltage of Power Supply

Low Voltage Variable-Frequency Drive

Link of Transformation

AC-DC-AC Variable-Frequency Drive

Nature of DC Power

Voltage Variable-Frequency Drive

Function

Constant Torque Universal Type

Brand

Chziri

Color

Black

Power

3.7kw

Input Voltage

380V/440V

Input Frequency

50/60Hz

Output Frequency

0-600Hz

Gross Weight

4kg

Net Weight

3kg

Signal

Continue

Control Mode

V/F Control ,Torque Control

Staring Frequency

0.00-10.00Hz

Protection Class

IP20

Altitude

Below 1000m

Communication

RS485

Installation Mode

Wall Mounted

Protection Function

Input Phase Loss Protection

Transport Package

Standard Export Package

Specification

CE ISO9001

Trademark

CHZIRI

Origin

Wenzhou, Zhejiang

HS Code

8504409999

Production Capacity

2000PCS/Month

Key features

Wide Frequency Range: Output frequency adjustable from 0 to 600Hz for precise motor control.

Built-in PID Control: Facilitates closed-loop control for temperature, pressure, and flow applications.

RS485 Communication: Supports Modbus protocol for easy connection with PLCs and industrial equipment.

Multiple Protection: Features input phase loss, auto current/voltage limiting, and under-voltage restraint.

Flexible Configuration: V/F curve and multi-inflection point settings allow customized motor performance.

Remote Operation: Keypad supports remote control operation for convenient management.

Compact Design: Wall-mounted or floor-type installation with independent air flue design.

High Reliability: Optimized hardware for anti-interference and 100% inspection before shipping.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceYears of Export ExperienceExperienced Team

Zhejiang Ziri Electrical Technology Co., Ltd.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 21 Years CertifiedNearest Port: Ningbo PortAverage Response Time: ≤2.61h

AI-Powered supplier vetting

SummaryThe supplier is identified as a combined company with manufacturing, export, service, quality-control, and R&D information provided. It reports ISO9001, CE, and CCC certifications, documented procedures for service assessment, corrective actions, complaint handling, and finished-product inspection. R&D evidence includes new products in the past year, ODM services, and four years of R&D engineer experience. Customization is offered from samples, designs, and full or minor requirements, including control panels and cabinets. Production information lists three production lines and substantial inverter, VFD/control-panel, and soft-starter output. Export experience is reported at 21 years, but overseas service infrastructure is limited: no overseas warehouse, showroom, agents, branches, or offline trade-show participation. Financial records are indicated for 2021–2023, but the slices do not provide sufficient detail to assess financial strength. No specific customer cases are supplied.

Supplier typeThe supplier is classified as a combined company and provides information covering general operations, export trade, manufacturing, service, quality control, R&D, and photos. This supports classification as an integrated manufacturing and service-oriented supplier, although no more specific legal or ownership type is stated.

CertificationsThe company description states that CHZIRI Electrical obtained ISO9001, CE, and CCC certificates. These are explicit certification claims, although the slices do not provide certificate numbers, validity dates, or scope details.

After-Sales capabilityThe supplier states that it offers technical support and fast after-sales service, and it has written procedures and followed records for complaint handling and corrective/preventive actions. However, it reports no overseas warehouse, showroom, agents, branches, or overseas service countries, which limits demonstrated local service coverage.

R&D capabilityThe supplier reports new products in the past year, provides ODM services, and offers multiple design-based customization options. It has four years of total R&D engineer experience, but no SDK is available; overall evidence supports active product development but does not establish a broad or advanced innovation platform.

Production capacityThe supplier operates three production lines and reports output for frequency inverters, VFD and soft-starter control panels, and soft starters. It also states that it holds warehouse stock and offers delivery within 15 working days in the off-season and about one month during peak season, indicating established production and fulfillment capability.

Customization capabilityThe supplier explicitly supports customization from samples, designs, full customization, minor customization, and flexible customization. Its description further states that it can design MCC panels, inverter cabinets, and soft-starter cabinets according to customer wiring diagrams.