Bosch TR500121/24/27EB doorstromer 21 kW 400 V wit

The Bosch TR500121/24/27EB is a high-performance instantaneous water heater designed for multiple tap points, providing hot water on demand for showers, kitchen sinks, and more. With a rated power output of 21 kW and 400 V three-phase connection, it delivers efficient and reliable performance for residential and light commercial applications.

Advantages

Energy efficiency class A ensures low operating costs. The electronic control system maintains precise temperature settings between 20 and 60 °C. The bare wire heating system offers fast heat-up and long service life. LCD display provides clear status information. IP25 protection rating makes it splash-proof and suitable for installation in bathrooms.

Suitable for

• Multiple tap points (e.g., shower, kitchen sink)
• Wall-mounted, pressure-resistant installations
• Households requiring consistent hot water supply

Key specifications

• Rated Power Output: 21 kW
• Voltage: 400 V (3-phase)
• Rated Current: 30.3 A
• Energy Efficiency Class: A
• Temperature Range: 20 - 60 °C
• Control Type: Electronic
• Heating System: Bare wire heating system
• Minimum Flow Rate for Activation: 2.5 l/min
• Maximum Flow Rate (at 38°C): Approx. 10 l/min
• Water Connection: G 1/2"
• Protection Class: IP25
• Display Type: LCD
• Installation Type: Wall-mounted, pressure-resistant
• Housing Material: Plastic
• Color: White
• Safety Features: Air bubble detection, overheating protection

Recommendations

For optimal performance, ensure proper electrical supply (400 V three-phase) and water pressure. Professional installation recommended.