CLAGE DBX21 Next 21kW 400V Electronic Instantaneous Water Heater

The CLAGE DBX21 Next is a high-performance electronic instantaneous water heater designed for 3-phase 400V electrical systems. With a powerful 21 kW output, it provides an endless supply of hot water for multiple tap points including showers, baths, and kitchen sinks. Its compact, wall-mounted design and advanced IES® bare wire heating technology ensure efficient and reliable operation.

Advantages

Energy-efficient with class A rating, continuous electronic temperature control from 20 to 60 °C, and a maximum flow rate of 10.0 L/min at 38°C. The LCD display and adjustable thermostat offer precise user control. IP25 splash-proof protection makes it suitable for installation in damp environments.

Suitable for

• Residential and commercial applications requiring instant hot water
• Multiple simultaneous hot water outlets (shower, bath, kitchen)
• Replacement of storage tank heaters for space-saving and energy savings

Key specifications

• Power: 21 kW
• Voltage: 400 V (3-phase)
• Rated current: 30.3 A
• Required fuse: 32 A
• Energy efficiency class: A
• Temperature range: 20 - 60 °C
• Max flow rate (at 38°C): 10.0 L/min
• Min activation flow: 2.5 L/min
• Water connections: G 1/2"
• Max operating pressure: 1 MPa (10 bar)
• IP rating: IP25
• Heating system: IES® Bare Wire
• Display: LCD
• Installation: Wall-mounted, pressure-resistant
• Country of origin: Germany

Recommendations

For optimal performance, ensure the electrical supply is 400V 3-phase with a 32A fuse. Professional installation by a qualified electrician is recommended. This unit is pressure-resistant and suitable for use with multiple outlets simultaneously.