EJK maxi MR ST heating cartridges – The perfect complement for heating and photovoltaic systems

The EJK maxi MR ST series of heating cartridges combines functionality, efficiency, and flexibility. These innovative devices consist of a powerful heating element and an electrical distributor that includes both a modular contactor and a practical 3-stage cam switch. This makes them an ideal solution for various heating systems, especially in combination with photovoltaic systems and heat pumps.

Modular contactor for flexible power supply

A key feature of the heating elements is the integrated modular contactor. This allows for direct connection to external energy sources, such as heat pumps. The heat pump's automatic control system ensures optimal regulation of the heating element to maximize efficiency and energy consumption. This innovative solution enables seamless operation throughout the entire heating system without requiring any additional manual intervention.

3-stage cam switch for individual power control

The integrated 3-stage cam switch allows for easy and flexible regulation of the heating element's power output. This is particularly useful when requirements fluctuate, such as those that can occur when using a photovoltaic system. The user can manually adjust the power to reduce energy consumption, thereby improving efficiency during periods of limited solar energy, such as on cloudy days.

The cam switch makes it possible to set the heating element to a fraction of its maximum power, which not only saves energy but also takes into account the power consumption of other household appliances.

Perfect complement to photovoltaic systems

The EJK maxi MR ST heating cartridges were specifically developed to complement existing photovoltaic systems. Manual power adjustment allows users to optimally balance the consumption of generated solar energy and ensure that excess electricity is used efficiently. The system's flexibility makes it possible to optimize the overall heating system's efficiency while simultaneously reducing dependence on external power sources.

Versatile applications

These heating cartridges are suitable for heating water in open and closed metal containers as well as in enamelled domestic hot water storage tanks. They can also be used without problems in buffer tanks without an internal coating. A corrosion-resistant design with magnesium or impressed current anodes ensures that the heating element withstands electrical potential differences and thus guarantees a long service life.

Thanks to their versatility, the EJK maxi MR ST series heating cartridges are also used in MDC heating modules from ZUG Elektromet and can be excellently integrated into central heating systems.

Robust materials and durable construction

The heating elements of the cartridge heaters are housed in a specially designed metal head and are made of robust stainless steel alloys. These materials offer high resistance to corrosion and wear, even in contact with feedwater or buffer storage water. An integrated grounding system ensures compatibility with cathodic protection systems, thus providing lasting protection for both the cartridge heater and the storage tank.

The innovative design of these heating cartridges is characterized by a meticulous construction that ensures the electrochemical protection of the system. This increases both corrosion resistance and extends the service life of the integrated magnesium anodes.

Technical data of the heating cartridge

• Power: 9 kW
• Supply voltage: 400 V
• Unheated area: 100 mm
• Immersion length to seal: 735 mm
• Threaded connection: 1 1/2"
• Minimum storage volume: 250 dm³

Technical data of the modular contactor

• Rated current: 25 A
• Nominal voltage: 234/400 V
• Insulation voltage: 500 V
• Number of current paths: 4
• Coil power supply: 230 V
• Width: 2 modules

Technical specifications of the 3-stage cam switch

• Incline angle: 45°/90°
• Rated current: 16 A
• Insulation voltage: 690 V
• Frequency: 50 Hz
• Impulse voltage: 6 kV
• Switching capacity: 0.7 kA
• Rated short-time current: 0.5 kA
• Protection rating: IP65

Conclusion: Efficiency meets flexibility

The EJK maxi MR ST series of heating cartridges offers a reliable, versatile, and efficient solution for water heating in a wide variety of applications. In combination with photovoltaic systems and heat pumps, they enable optimal use of renewable energies. Thanks to robust materials, innovative features such as power regulation, and their sophisticated design, these heating cartridges represent an investment in sustainability and long-term efficiency.

Scope of delivery

• 1 x 9 kW modular heating element
• Assembly instructions

Download

• User manual