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 UL Certified 200ms Response Time AC Three Phase 12 Months Frozen 128 Groups Alarm Recorder Energy Meter Apm521

Name: Acrel UL Certified 200ms Response Time AC Three Phase 12 Months Frozen 128 Groups Alarm Recorder Energy Meter Apm521
Brand: ACREL CO., LTD.
SKU: 2176669862

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: ≤4.33h

AI-Powered supplier vetting

SummaryThe supplier demonstrates broad electrical, power-electronics, automation, IoT, software, and related equipment business coverage. It has documented procedures for corrective and preventive actions, complaint handling, supplier-service assessment, and finished-product inspection. Its capabilities include 3D software design, ODM, SDK provision, new-product development, extensive customization, SMT/DIP production, automated sensing, debugging, and testing. Overseas support is available through agents or branches in Singapore, including installation, training, repair, maintenance, and debugging. However, the supplier has no reported in-stock capacity, overseas warehouse, overseas showroom, or valid manufacturing-capacity contract with related subcontractors. Evidence is insufficient for certification holding and customer cases.

Supplier typeThe stated business scope covers electrical signal equipment, power-electronic components, instruments and meters, software, intelligent equipment, lighting, IoT and information-security devices, charging stations, power-distribution control equipment, and industrial automation systems. Its facilities include SMT and DIP assembly lines plus automatic sensing, debugging, and testing equipment, indicating a manufacturer and technical equipment supplier rather than a purely trading-oriented entity.

After-Sales capabilityThe supplier has documented complaint-handling and corrective/preventive-action procedures with records, and overseas service capability through agents or branches in Singapore covering installation, training, repair, maintenance, and debugging. However, it reports no overseas warehouse and no overseas showroom; these are logistical limitations but do not negate the documented service functions.

R&D capabilityThe supplier provides 3D software design, ODM, SDK access, and multiple forms of customization, and reports new products during the past year. Nevertheless, it states that it has not established an AI model for big-data processing and decision-enabled management, which is a stated sustainability and digital-management gap rather than proof of insufficient product innovation.

Production capacityProduction evidence includes SMT and DIP assembly lines, automatic electricity-sensor production, and automatic debugging and testing equipment; finished-product inspection instructions are uniformly followed. Lead times are stated as within 15 workdays in both peak and off-seasons, but the supplier reports no in-stock capacity and no valid manufacturing-capacity contract with related subcontractors, limiting evidence of flexible or backup capacity.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, flexible customization, 3D software design, and ODM services. These combined statements provide direct evidence of broad customization and design-development capability.

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.