Can this relay be used with AC contactors?

Yes, it can be used with CJX2-F AC contactors or used independently.

What is the maximum rated current?

The maximum rated current for this series is 630A.

Original Supplier Electronic Adjustable Overcurrent Class 10 Thermal Overload Relay

Name: Original Supplier Electronic Adjustable Overcurrent Class 10 Thermal Overload Relay
Brand: Zhejiang C&J Electrical Holding Co., Ltd.
SKU: 2233151525

Zhejiang, ChinaZhejiang C&J Electrical Holding Co., Ltd.

Negotiable

100 Pieces

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

Theory

Thermal Relay

Usage

Household Appliances Relay, Communication Relay

Model NO.

LR9 F 7381

Phase

Electricity Type

Number of Pole

Load

High Power Relay

Protective Characteristics

Open Relay

Action Principle

Electromagnetic Type

Size

Miniature

Type

Thermal Overload Relay

Rated Load - Current/Voltage

7/300

Dielectric Strength Coil & Contacts

2000

Wire Size

20-16AWG/0.5-1.5mm²

Tightening Torque

0.7nm

Transport Package

Normal Exprot Package

Specification

LR9-F

Trademark

C&J and OEM

Origin

Wenzhou China

HS Code

8536490000

Key features

IEC60947-4-1 Compliance: Conforms to international IEC60947-4-1 standard for safety and reliability.

Wide Current Range: Available in models covering 30A to 630A for diverse motor applications.

Phase Imbalance Protection: Advanced differential mechanism protects against phase imbalance and single-phase circuits.

Temperature Compensation: Built-in temperature compensation ensures accurate tripping under varying conditions.

Flexible Mounting: Can be directly connected to contactors or mounted independently for versatile use.

High Voltage Rating: Suitable for circuits with rated voltage up to 660V at 50Hz or 60Hz.

Class 10 Starting: Offers choice of starting class for optimized motor protection performance.

20+ Years Experience: Manufacturer with over two decades of industry expertise and quality control.

Company profile

Importers and ExportersHigh Repeat Buyers Choice

Zhejiang C&J Electrical Holding Co., Ltd.

Zhejiang, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2021-02-26Average Response Time: ≤8.43h

AI-Powered supplier vetting

SummaryZhejiang C&J Electrical Holding Co., Ltd. is a China-based limited company identified as both a trading company and manufacturer/factory. It produces circuit breakers, inverters, and related electrical products, with three production lines, 6–10 quality-control staff, and stated annual miniature circuit-breaker output of 10,000,000 pieces. The supplier reports ISO 9001 management-system certification and describes CE/CB certification coverage, while an SGS audit record is valid from July 23, 2025 to July 22, 2026; the audit result is recorded as “0,” but its meaning is not defined. The company states that it serves more than 50 countries and regions and that exports represent 41%–50% of sales. It reports 50 years of combined R&D engineer experience and product intellectual-property and design-patent ownership. Evidence is insufficient to verify after-sales services, financial credibility, OEM/ODM customization, or named customer cases.

Supplier typeThe supplier is explicitly classified as both a trading company and manufacturer/factory, operates as a limited company in Zhejiang, China, and describes integrated R&D, production, sales, and electrical-product manufacturing activities.

CertificationsThe supplier reports ISO 9001 certification and states that its products undergo CE, CB, and other certification systems. An SGS audit record is listed as active from July 23, 2025 to July 22, 2026, although the recorded audit result “0” is not explained in the provided data.

R&D capabilityThe company states that inverter technology development is a core activity, maintains R&D and production functions, reports 50 years of total R&D-engineer experience, and claims intellectual-property and design-patent ownership. Specific recent product-launch data and detailed R&D service capabilities remain unknown.

Production capacityThe supplier reports precise manufacturing and testing facilities, three production lines, 6–10 quality-control staff, and annual miniature circuit-breaker output of 10,000,000 pieces. It also identifies manufacturing of circuit breakers, leakage breakers, molded-case breakers, and inverters, supporting a demonstrated production capability.

Product Q&A

Q:Are you a trading company or manufacturer?

We are a professional manufacturer for low-voltage circuit breaker series products, integrating research and development, manufacturing, processing and trade departments together. We also supply different electrical and electronic items.

Q:Why should you choose us?

More than 20 years of professional teams will give you good quality products, good service, and reasonable price.

Q:Is the MOQ fixed?

The MOQ is flexible and we accept small order as trial order.

Q:What is the rated voltage for this relay?

The relay is suitable for circuits with a rated voltage up to 660V.

Q:Does the relay support different starting classes?

Yes, the product offers a choice of starting class for customized protection needs.