Marstek CT002 Current Transformers

Accurate three-phase current transformers for real-time monitoring and smart energy management, fully compatible with Marstek systems.

Three-phase precision

Reliable measurement of voltage and current across all phases

Easy integration

Direct connection with Marstek systems and smart meters

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Realtime monitoring

Instant insight into consumption and feed-in via the Marstek app

Universal application

Seamlessly usable in various energy setups

The Marstek CT002 is a three-phase current transformer designed to accurately measure current and voltage. When combined with Marstek energy systems, it enables real-time monitoring, optimized energy control, and reliable data for both residential and commercial applications.

Accurate 3-phase measurement

The CT002 measures voltage and current across all phases with high precision. This enables accurate monitoring of consumption, feed-in, and imbalance. Essential for professional energy analysis and optimization.

Seamless integration

Thanks to RS485/Modbus communication, the CT002 connects directly to Marstek ESS and other compatible EMS/BMS systems. This allows easy integration into existing installations without complex adjustments.

Reliable data transmission

The current transformers are designed for continuous use in residential and commercial environments. With stable signal transmission and low error margins, they provide a solid foundation for smart energy management.

Suitable for professional use

Applicable across a wide range of installations, from residential to utility-scale. The compact design and flexible mounting options make the CT002 a practical choice for installers and system integrators.

Key specifications

Measurement phases

3-phase monitoring

Suitable for residential and commercial use

Measurement method

Current and voltage measurement

Accurate registration per phase

Communication

RS485 / Modbus RTU

Direct connection to ESS or EMS

Connectivity

Supports Marstek app

Real-time data via connected systems

Power supply

Via smart meter or external source

Optional USB power supply if needed

Housing

Compact design

Easy installation in meter cabinet

Compatibility

Full integration with Marstek ESS

Supports professional energy systems

Warranty

2-year manufacturer warranty

Support via MW Energie

The Marstek CT002 is designed for installers and system integrators who require reliable and accurate energy measurement. By continuously monitoring voltage and current across all three phases, it forms the foundation for effective energy management. Through RS485/Modbus communication, the CT002 integrates seamlessly with Marstek ESS and other professional systems, making real-time data available for analysis and control.

In addition to precision, the CT002 offers practical reliability. Its compact design allows for easy installation in virtually any meter cabinet, while stable data transmission ensures consistent performance, even during long-term operation. When combined with Marstek systems, the CT002 provides the insights needed to optimize energy usage, reduce costs, and deliver optimal performance to end users.

Who is it for

Distributors

Our chain starts with distribution. We work with partners who sell our products and add value. With clear agreements, reliable stock availability, and technical support, we make collaboration straightforward.

Installers

We support installers with easy-to-understand systems, reliable delivery, and direct access to support. No unnecessary complexity, but a partner who thinks along and provides solutions that make the job easier.

E-commerce businesses

For e-commerce companies with technical expertise and a network of installers, we provide both plug-and-play solutions and other energy solutions. We offer clear documentation and service that continues even after delivery.

Private individual

Our focus is not on direct sales, but on strengthening the market. We help stimulate demand, clarify the market, and guide users toward quality choices. This is how we operate together in a B2B2C model.

Partner in

energy storage

As an importer and specialist in energy storage, we provide not only reliable products, but also the service and expertise to support you. With MW Energie, you choose quality, continuity, and a partner who thinks along with you.

More about the Marstek CT002 Current Transformers

Connectivity

RS485 / Modbus communication

The CT002 uses RS485 with Modbus RTU, allowing data to be transmitted directly and reliably to ESS or EMS systems

Real-time data transmission

Consumption, feed-in, and phase imbalance are continuously measured and transmitted without delay for optimal energy management

Compatibility

Fully integrated with Marstek ESS, but also usable in other professional energy systems with Modbus support

Applications

Homes and apartments

Accurate monitoring of consumption and feed-in for residential installations with solar panels and home batteries

Commercial installations

Suitable for utilities, light industry, or commercial buildings for energy management and cost control

Smart energy solutions

Part of net-zero strategies, dynamic tariff control, and integration with smart grids

Installation and integration

Easy installation

Compact design and standard connections make installation in the meter cabinet quick and practical

Flexible power supply

Powered via the smart meter or optionally via USB, ensuring installation can always be completed smoothly

Seamless integration

Direct integration with Marstek ESS and support for professional EMS/BMS systems for complete energy solutions

The 4 guarantees of MW Energie

40+ years of experience in energy solutions

40+

Always a warranty on our products

We only supply products from brands that have proven their quality. Always with a clear manufacturer’s warranty, so you can invest with confidence.

Expert technical support

Whether you are a dealer or an end user, our support team is ready to assist with advice, installation questions, and solutions. Fast, knowledgeable, and personal.

Own stock, fast delivery

We keep our products in stock ourselves. This allows us to deliver quickly, so you are never dependent on long lead times or uncertain availability.

Dedicated aftercare and service

Our work doesn’t stop after delivery. We remain involved for maintenance, updates, and guidance, ensuring that you and your customers can rely on ongoing support.

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