Can it measure power quality and harmonics?

Yes - measures voltage/current 2nd to 63rd harmonics, THD, individual harmonic content, positive/negative/zero sequence components, and unbalance.

Does it have event recording and fault diagnosis?

Yes - records fault, start, stop, DI change, and restart events. Supports fault waveform recording and USB data export.

What is the "anti-shaking" function?

Optional anti-shaking feature enables immediate restart after voltage dips or full voltage loss, preventing production downtime.

What auxiliary power supply options are available?

AC220V module (AC85-265V/DC100-300V) or AC380V module (AC/DC100-415V).

How do I select the right CT rating for my motor?

Available CT ratings: 1A (0.1-5000A external), 5A, 25A, 100A, 250A, 800A. Choose based on motor full-load current.

Acrel Ard3m Intelligent Motor Protector Motor Protection Relay for Mcc

Name: Acrel Ard3m Intelligent Motor Protector Motor Protection Relay for Mcc
Brand: Jiangsu Acrel Electrical Manufacturing Co., Ltd.
SKU: 2318893325

Jiangsu, ChinaJiangsu Acrel Electrical Manufacturing Co., Ltd.

US$206.00-646.20

1 Piece

Sample price:US$215.40/piece.Request sample

Product profile

Customization

Available

Task

Adjust

Structure

Open-Loop

Model NO.

ARD3M

Mathematical Model

Linear

Signal

Continuous

Function

Automatic Control, Protection, Monitoring, Measurement

Certification

RoHS, CCC, CE

Condition

New

Customized

Material

Plastic

Rated Voltage

660V

Rated Current

1-800A

Protocol

Modbus-RTU, Profibus-Dp, Profinet, Modbus-TCP, Wif

Measure

Voltage, Current, Power, Harmonic, Temperature

Protect

Over&Under Load and Voltage&Power, Short Circuit

Standard Configuration

10di/6do, 2 Modbus-RTU

Transport Package

Carton

Specification

ARD3M

Trademark

Acrel

Origin

China

HS Code

8536300000

Production Capacity

200000

Key features

All-in-one protection, measurement, control, and communication.

Rated for motors up to 660V / 690V.

10 programmable DI + 6 programmable DO inputs/outputs.

Supports Modbus, Profibus, Profinet, and TCP/IP.

2-63rd harmonic measurement for power quality analysis.

Anti-shaking function for immediate restart after voltage dips.

Built-in star-delta starting logic, no extra relays.

Fault waveform recording with 49 event logs for diagnostics.

Optional WiFi for wireless setup via phone or PC.

Split design with IP54 display for flexible cabinet installation.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceExperienced Team

Jiangsu Acrel Electrical Manufacturing Co., Ltd.

Jiangsu, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 8 Years CertifiedNearest Port: Shanghai PortAverage Response Time: ≤4.46h

AI-Powered supplier vetting

SummaryThe supplier demonstrates broad customization and R&D capabilities, including ODM, OEM, SDK availability, multiple design tools, and documented design review, verification, and validation records. Production-related evidence includes SMT, assembly, and automated processing lines, inventory capacity, contracts with associated subcontractors, and standardized finished-product inspection instructions. Service management is supported by written procedures and records for corrective actions, complaints, supplier assessment, and quality assurance. The supplier has overseas agents or branches, export rights, and prior participation in MEE Middle East Energy, but reports no overseas warehouse or showroom and lists zero countries offering overseas services. Financial credibility cannot be assessed because only years are provided, without non-financial supporting results. No explicit certification holdings or customer case details are provided.

Supplier typeThe supplier operates or coordinates SMT, assembly, and automated processing facilities, maintains inventory capability, and has valid manufacturing contracts with associated subcontractors. It also holds self-operated import/export rights and has overseas agents or branches, indicating a manufacturing-oriented supplier with international service arrangements.

After-Sales capabilityThe supplier has documented and followed procedures for corrective and preventive actions, customer complaints, service-capability assessment, and quality assurance. Overseas agents or branches and prior participation in an offline trade show support service reach, while the absence of overseas warehouses and showrooms limits the evidence for localized after-sales infrastructure.

R&D capabilityThe supplier reports new products during the past year, ODM services, SDK availability, R&D responsibilities covering new-product development and production technology support, and use of AutoCAD, Pro/E, and SolidWorks. It also maintains auditable design input, output, review, verification, and validation documentation, supporting a demonstrated product-development process.

Production capacityProduction evidence includes SMT, assembly, and automated processing lines, standardized finished-product inspection instructions, inventory capability, valid contracts with associated subcontractors, and lead times within 15 workdays in both peak and off-seasons. These stated capabilities support a positive assessment of manufacturing and delivery readiness.

Customization capabilityThe supplier explicitly provides customization from samples, customization from designs, full customization, minor customization, and flexible customization. The same broad range is reported across R&D and design-service capability records, indicating substantial customization coverage.

Product Q&A

Q:What motor voltage and current ranges does the ARD3M support?

Rated motor voltage up to AC660V, 50/60Hz. Current range from 0.1A to 5000A with external CTs.

Q:Is the ARD3M available in an integrated or split design?

Split design - consists of main body, display unit, CTs, and optional communication modules. Display is IP54 for panel mounting.

Q:What protection functions does it offer?

Overload (inverse-time/definite-time), short circuit, ground fault, leakage, phase loss, stall, locked rotor, underload, over/under voltage, phase sequence, temperature, and more.

Q:How many DI/DO points are available for control?

10 programmable DI inputs and 6 programmable DO outputs, supporting direct start, star-delta, auto-transformer starting, and remote start/stop via communication bus.

Q:What communication protocols does it support?

2 MODBUS-RTU channels are standard. Optional modules for PROFIBUS-DP, PROFINET, Ethernet (MODBUS-TCP), and WiFi.