What are the power supply options?

The relay supports AC/DC 90-240V and DC 20-60V, with optional configurations available.

What is the monitoring range for leakage current?

The monitoring range is 20mA to 1000mA, with a default setting of 300mA.

4 Channel LCD Screen Digital Earth Leakage Relay with CT

Name: 4 Channel LCD Screen Digital Earth Leakage Relay with CT
Brand: Chongqing Blue Jay Technology Co., Ltd
SKU: 2000694291

Chongqing, ChinaChongqing Blue Jay Technology Co., Ltd

US$70.00-90.00

10 Pieces

Sample price:US$180.00/piece.Request sample

Product profile

Customization

Available

Theory

Electromagnetic Relay

Usage

Protection Relay

Model NO.

ELR-CH4IN4T

Phase

Electricity Type

Number of Pole

Load

Low Power Relay

Protective Characteristics

Sealed Relay

Action Principle

Electromagnetic Type

Size

Miniature

Type

Electric Parameter Relay

Power Supply

AC/DC 90-240V, DC 20-60V (Optional)

Maximum Power Consumption

Frequency

45/65Hz, Accuracy ±0.01Hz

Alarm Threshold Range

20mA ~ 1000mA; Default 300

Accuracy

Transport Package

Carton

Specification

96*96*74mm

Trademark

Blue Jay

Origin

China

Production Capacity

1000 Pieces/Year

Key features

4 Channel Monitoring: Monitors up to 16 circuits with real-time leakage current and temperature data.

Multi-System Compatibility: Designed for TNC-S, TN-S, and TT grounded power supply systems.

Dual Sensor Flexibility: Supports both current transformers and temperature sensors per channel.

RS485 Modbus RTU: Features RS485 interface with Modbus RTU protocol for seamless integration.

Wide Application Scope: Ideal for automotive, EV charging, power plants, and photovoltaic systems.

Customizable Options: Power supply, frequency, and alarm thresholds are customizable.

Global Warranty Support: Standard 12-month warranty with optional extended coverage up to 36 months.

Company profile

Years of Export ExperienceR&D Capabilities3D Software DesignCustomization from Designs

Chongqing Blue Jay Technology Co., Ltd

Chongqing, China

Business Type: Manufacturer/FactoryExport Year: 2009-05-03Average Response Time: ≤4.52hTerms of Payment: LC, T/T, Western UnionInternational Commercial Terms(Incoterms): FOB, CIF, EXW

AI-Powered supplier vetting

SummaryChongqing Blue Jay Technology Co., Ltd. is identified as a Chinese limited company and manufacturer/factory, although another record describes the business as a trading company. It reports ISO 9001 certification and references CE, RoHS, and after-sales quality control. The supplier states that it provides OEM and ODM services, has launched new products within the past year, and supports extensive customization. Production-related evidence includes two factories and more than 20,000 m² of area, while in-stock fulfillment, overseas warehouses, overseas showrooms, and overseas agents or branches are explicitly unavailable. The supplier has an export license and serves Vietnam and Malaysia, with participation in the Canton Fair. Financial information is insufficient to assess credibility, and raw-material traceability is unknown. OEM service for well-known brands is reported, but no specific customer names or cases are provided.

CertificationsThe company description explicitly states that Blue Jay is ISO 9001-certified and references CE and RoHS in its quality-control approach. The provided information does not clarify the scope, issuing bodies, or validity dates of these certifications.

After-Sales capabilityThe company description explicitly mentions after-sales in its quality-control coverage. However, no detailed service process, response standard, warranty terms, or support organization is provided, so the overall capability cannot be fully assessed.

R&D capabilityThe supplier reports new products during the past year, ODM service, design optimization support, and multiple customization modes. It has no available SDK, so software-development support is explicitly absent, but the product and design evidence supports innovation capability in hardware or product development.

Production capacityThe supplier describes two factories with more than 20,000 m² of area and is identified as a manufacturer/factory. It also explicitly lacks in-stock capacity, overseas warehouses, and overseas showrooms, while contract status for manufacturing capacity is unknown.

Customization capabilityThe supplier explicitly offers customization from samples, designs, full customization, minor customization, and flexible customization, and states that it can help optimize designs. These records provide direct evidence of broad customization capability.

Product Q&A

Q:What is the difference between Type A and Type B Earth Leakage Relays?

Type A Earth Leakage Relays are designed for Alternating and Pulsating DC Currents. Type B Earth Leakage Relays are designed for AC, Pulsating DC, and Smooth DC Currents.

Q:How to choose compatible earth leakage CTs for the earth leakage relay?

First, you need to check the CT ratio of the earth leakage relay. Both the CT ratio of CTs and the earth leakage relay are similar. If your earth leakage relay's CT ratio is 2000:1, you need to choose CT ratio of the Current transformer is 2000:1.

Q:Can I request a customized earth leakage relay?

Absolutely! We offer oem & ODM service.

Q:How do I place an order?

Q:What is the warranty period for this relay?

Standard warranty is 12 months or 2,000 operating hours. Extended warranty up to 36 months is optional.