Can APM521 monitor phase sequence and phase loss?

Definitely. It has built-in phase sequence detection, phase loss alarm and reverse phase sequence alarm functions, which guarantees power supply safety.

Acrel Apm521 0.2s Class 4di 2do 2ao Multifunction Io Ethernet Communication Modbus-TCP Protocol Energy Meter

Name: Acrel Apm521 0.2s Class 4di 2do 2ao Multifunction Io Ethernet Communication Modbus-TCP Protocol Energy Meter
Brand: ACREL CO., LTD.
SKU: 2180858452

Shanghai, ChinaACREL CO., LTD.

US$188.00

1 Piece

Sample price:US$100.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

2 Years

Warranty

2 Years

Model NO.

APM521

Display

Digital

Installation

Indirect Connected

Usage

Multi-Functional Energy Meter, Watt-Hour Meter, Meter for Industry and Home Use, Standard Electric Energy Meter, Reactive Energy Meter, Maximum Demand Meter

Electric Equipment

Three-phase Four-wire

Theory

Electronic Meter

Power Meter Connection

Terminal

Measured Signal

Continuous Wave

Type

Energy Meter

Certification

CE, UL

Customized

Accuracy Class

Class 0.2s

Power Supply

AC 85~265V

Rated Current

5A by Cts

Rated Voltage

66/115VAC 230/400VAC 277/480VAC 690VAC

Communication

RS485, Ethernet Optional

IP Protection

IP54(Front Panel),IP30(Body)

Transport Package

Carton

Specification

96*96*66mm

Trademark

Acrel

Origin

China

HS Code

9028301400

Production Capacity

50000

Key features

Dual RS485 + Ethernet + FTP, multi-protocol compatible

0.2% high accuracy, 0.2S class active energy measurement

Standard 4DI+2DO+2AO, no extra modules needed

EMC Level 4 anti-interference, IP54 front panel protection

UL, CSA & CE certified, compliant with North American standards

Dual installation: 96*96 embedded & DIN rail mount

Company profile

Exhibition ExperienceQuality AssuranceR&D CapabilitiesManagement Certification

ACREL CO., LTD.

Shanghai, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 4 Years CertifiedNearest Port: Shanghai PortAverage Response Time: ≤5.19h

AI-Powered supplier vetting

SummaryThe supplier demonstrates established product development and customization capabilities, including 3D design, ODM services, SDK availability, and new product development within the past year. Production-related evidence includes SMT, DIP, automatic sensor production, debugging, and testing equipment, with documented finished-product inspection. Service management procedures exist for supplier assessment, corrective and preventive actions, and complaint handling. Overseas support is available through agents or branches in Singapore, including installation, training, repair, maintenance, and debugging. However, the supplier has no stated in-stock capacity, overseas warehouse, overseas showroom, or valid manufacturing-capacity contract with related subcontractors. Evidence of certification ownership, customer cases, and financial credibility is insufficient. The supplier also reports no established AI model for big-data-enabled management.

Supplier typeThe supplier’s stated business scope covers electrical signal equipment, power electronic components, electrical and intelligent instruments, lighting, IoT and information-security devices, charging stations, power-distribution control equipment, industrial automation systems, and related electrical equipment. Its facilities include SMT, DIP, sensor production, automatic debugging, and testing lines, indicating a manufacturer and technical equipment supplier rather than only a trading intermediary.

After-Sales capabilityThe supplier has documented procedures and records for corrective and preventive actions, customer complaints, and supplier-service assessment. It also provides overseas installation, training, repair, maintenance, and debugging through overseas agents or branches, including service coverage in Singapore; however, no overseas warehouse or showroom is available.

R&D capabilityThe supplier offers 3D software design, multiple forms of customization, ODM services, and an available SDK, and it reports new product development during the past year. Conversely, it states that it has not established an AI model for big-data processing and management decision enablement; this limits evidence of advanced digital innovation but does not negate its documented product-development capabilities.

Production capacityProduction evidence includes SMT, DIP, automatic electricity-sensor production, automatic debugging, and testing equipment, with written instructions uniformly followed for finished-product inspection and stated peak- and off-season lead times within 15 workdays. Capacity-related limitations include no in-stock service capacity and no valid manufacturing-capacity contract with related subcontractors.

Customization capabilityThe supplier explicitly supports customization from samples, customization from designs, full customization, minor customization, and flexible customization. It also provides 3D software design and ODM services, directly supporting broad product-design and customization requirements.

Product Q&A

Q:What installation methods does APM521 support?

APM521 supports two installation ways: 96x96 embedded installation (cut-out size 8888mm) and DIN rail mounting. It is flexible for different cabinet designs.

Q:What certifications does APM521 have?

It complies with IEC, UL and CSA standards, and passes EMC Level 4 electromagnetic compatibility test. It is fully applicable to North American and European electrical projects.

Q:What built-in I/O does APM521 have?

It is equipped with standard 4DI+2DO+2AO, no need for extra module installation. It also has pulse output for energy metering.

Q:What communication features does APM521 own?

Built-in dual RS485, Ethernet and FTP function, supports Modbus-RTU/TCP, DL/T645-2007. It realizes remote data collection and timing storage.

Q:Does APM521 support frozen energy data?

Yes. It supports 24-hour, 31-day, 12-month and custom timing frozen energy data query and storage.