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Three Phase DIN Rail Meters Manufacturer.

High-performance smart metering infrastructure for global utility networks and sustainable energy grids.

Product
Narrative

Technical Innovation & Quality Heritage

YTL’s Three Phase DIN Rail Meters are the industrial standard for compact, high-performance energy measurement in three-phase electrical systems. As modern distribution panels become increasingly crowded, the need for space-saving metering solutions has never been greater. Our manufacturer-grade 3-phase meters fit onto a standard 35mm DIN rail, providing a modular and clean installation for factory floors, commercial buildings, and large-scale residential projects. Despite their small footprint, they support direct currents up to 100A and offer Class 1.0 accuracy. Zhejiang Yongtailong has engineered these meters to provide a full suite of electrical parameters, including per-phase voltage, current, and power factor. With integrated RS485 communication and optional multi-tariff support, our DIN-rail meters are the perfect choice for sub-metering applications where data granularity and physical space are both top priorities.

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Technical Datasheet

Technical Category3-Phase DIN Rail Specs
Phase Configuration3-Phase 3-Wire (3P3W) or 3-Phase 4-Wire (3P4W)
Current Rating5(100)A Direct Connect / 1.5(6)A CT Operated
Module Width72mm (4-module) or 126mm (7-module)
CommunicationRS485 Modbus-RTU, M-Bus, or Pulse S0
Accuracy ClassClass 1.0 (Active Energy) / Class 2.0 (Reactive)

Product Application

  • Industrial Factory Sub-panels
  • Shopping Mall Sub-metering
  • Data Center Rack Monitoring

Industrial Factory Sub-panels

Perfect for monitoring the energy efficiency of individual production lines or heavy machinery like air compressors and HVAC chillers. By mounting these meters directly onto the DIN rail in local distribution boxes, plant managers can accurately allocate energy costs to specific departments and identify machines that are consuming more power than expected, signaling a need for maintenance.

Shopping Mall Sub-metering

Ideal for billing individual retail tenants in large commercial complexes. The compact design allows dozens of 3-phase meters to be installed in a single centralized electrical room. Combined with RS485 communication, the mall management can automatically collect all readings for monthly billing, eliminating manual errors and tenant disputes.

Data Center Rack Monitoring

Used to monitor the high-density power feeds to server racks. The meter provides real-time data on per-phase voltage and current, which is critical for maintaining load balance in sensitive IT environments. The DIN-rail format ensures that the metering equipment takes up minimal valuable space within the server room cabinets.

Product Advantages

Modular Design

Snaps directly onto any standard 35mm DIN rail, significantly reducing installation time and making it easy to add more meters as your facility expands.

Per-Phase Visibility

Provides detailed measurement for Phase A, B, and C independently, allowing for easy detection of load imbalances that could damage motors or trip breakers.

Multi-Tariff Support

Allows for up to 8 different time-of-use (TOU) tariffs, enabling businesses to optimize their high-energy activities for off-peak hours and save on utility costs.

Frequently Asked Questions

  • Q: Can this handle unbalanced loads?

    A: Yes, our 3P4W meters are specifically designed to accurately measure energy even when the loads on each phase are significantly different.

  • Q: What is the maximum cable size for the terminals?

    A: Our 100A direct-connect meters feature large terminals that can typically accommodate cables up to 35mm², ensuring a safe and secure connection.

  • Q: Do I need external CTs for a 60A load?

    A: No, our direct-connect models can handle up to 100A without external transformers, simplifying the wiring and reducing the total cost.

  • Q: Can I reset the kWh reading to zero?

    A: For legal billing security, the "Total kWh" register cannot be reset. However, we provide a "Resettable kWh" register for temporary energy audits or project tracking.

  • Q: Is it compatible with a 3-wire Delta system?

    A: Yes, we offer specific 3P3W models designed for Delta connections. Please ensure you select the correct wiring configuration for your site.

Welcome To A National High-tech Enterprise

Established in 2000, Zhejiang Yongtailong Electronic Co., Ltd. is located in Tongxiang. As a professional Three Phase DIN Rail Meters manufacturers and Three Phase DIN Rail Meters suppliers in China , YTL designs and produces electronic energy meters which are cost-efficient and ideal for the use in solutions for AMR/AMI at residential as well as industrial applications.YTL was one of the first companies in the domestic market with which had an internal R&D department as well as international sales business. Since our foundation in 2000 we have grown to a manufacturer which complies and meet to many specifications from our national and international partners. At present our export volume makes us a leading company for technology and product export to more than 60 countries throughout the world.YTL is devoted to develop and design all types of electronic energy meters, concentrators and solution applications. With a combined design of the special accessories, we have successfully developed series of competitive products of small size, multifunction, low power consumption and excellent performance. We offer a one-to-one service to our partners. With annually over 68 projects that are successfully finished and holding over 500 patents of design rights, we are also advanced in the technology and patents of current sampling.

  • 2000

    Established In

  • 500+

    Employees

  • 60+

    Export
    Countries

  • 500+

    Patent

  • 10million+

    sets per year

YTL Honor

  • MID
  • KEMA
  • DLMS
  • IEC
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