RXC21.5/00021

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Overview of Siemens RXC21-5-00021 Room Controller

The Siemens RXC21-5-00021 is a room controller engineered for precise temperature regulation in fan coil systems, chilled ceilings, and radiators. It offers control for 3-speed fans and outside air dampers with a factory-loaded application for optimized climate comfort in individual rooms. Designed for industrial and commercial HVAC applications, this controller supports smooth and reliable environmental control.

Key Features

  • Input voltage: 230 V AC with 50/60 Hz frequency ensuring compatibility with standard power supplies.
  • Output voltage: AC 24 V for ON/OFF, pulse duration modulation (PDM), or 3-position control for flexible actuator management.
  • Four triac outputs simplifying simultaneous control of fans and dampers.
  • Factory-loaded application OOO21 for quick setup of common HVAC functions.
  • IP20 protection rating suited for indoor installation environments.
  • Operating temperature range from 0 to 50 °C, suitable for controlled indoor climates.
  • Supports basic HVAC control strategies including temperature, humidity, and fan speed.

Technical Specs

Specification Details
Model RXC21-5-00021
Input Voltage 230 V AC
Frequency 50/60 Hz
Output Voltage AC 24 V ON/OFF, PDM, 3-position (+/– 20%)
Number of Triac Outputs 4
Protection Class IP20
Operating Temperature 0 to 50 °C
Application Fan coil systems, chilled ceilings, radiators

Applications / Use Case

Ideal for regulating temperature and airflow in individual rooms through fan coils or radiant systems in commercial and industrial buildings.

Siemens ensures product quality with full documentation and limited warranty support.

RXC21.5/00021

$0.00

  • ACHIEVING

    4.0

    average rating

  • With

    95%

    positive reviews

  • LESS THAN

    1%

    return rate

Does it come with a warranty?

Yes, All products are offered wth 1-Year warranty.

What is the condition of the product?

All products sold are New & Unused.

How fast is shipping?

All products are delivered within 2-8 business days depending on our stock location.

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