# Siemens RLU222 Programmable Controller - HVAC Control

The **Siemens RLU222 Programmable Controller**, part number 604364 110926B64371, is a high-performance Class 2 SELV/PELV device designed for precise control in HVAC applications. This controller, originating from Siemens Switzerland Ltd, provides reliable and efficient operation in various industrial settings. It's perfect for those seeking dependable automation solutions.

The **RLU222** operates at 24V~±20% with a frequency of 50/60Hz, consuming only 5VA of power. Its compact design, with dimensions of 7-8 mm, allows for easy integration into existing systems. The controller features a 0-10V output, a 1mA current rating, and a G1 4A~max rated potential-free relay. The maximum load is 250V~4(3)A, with a 4A resistor and 3 FLA with an 18 LRA for enhanced functionality. The lightweight design, weighing 350 grams, ensures easy installation and maintenance.

Key Features:

-   **Precise Control:** Offers accurate control in HVAC systems.
-   **Efficient Operation:** Designed for optimal performance with low power consumption.
-   **Compact Design:** Easy integration into existing systems.
-   **Reliable Signal Transmission:** Features a 0-10V output for seamless operation.
-   **Durable Construction:** Built for long-lasting performance in industrial environments.

Specifications:

Voltage: 24V~±20%  
Frequency: 50/60Hz  
Power Consumption: 5VA  
Output: 0-10V  
Current Rating: 1mA  
Relay: G1 4A~max rated potential-free relay (250V~4(3)A max load)  
Resistor: 4A  
FLA: 3  
LRA: 18  
Weight: 350 grams

The **Siemens RLU222 controller** is a reliable choice for your industrial automation needs. Its Swiss origins reflect a commitment to quality and precision. Upgrade your system with the **RLU222** for efficient and seamless operation. Contact Ram Automations at [info@ramautomations.com](mailto:info@ramautomations.com) for more information.

## Details

- **Price:** 999.0 USD
- **Vendor:** Siemens
- **Type:** Industrial Automation > Controllers > Programmable Controllers
- **Tags:** 24V controller, 604364 110926B64371, automation components, HVAC control, industrial automation, programmable controller, RLU222, Siemens

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| New | 999.00 USD | In stock |

## Images

- Siemens RLU222 Programmable Controller - HVAC Control-Ram Automations

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> Source: [Ram Automations](https://ramautomations.com/products/siemens-rlu222-programmable-controller)
> Updated: 2026-10-03