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SK3235.450 Rittal Speed control for fan-and-filter uni3240/3241/3243/3244.500 3245
Rittal SK3235.450 EC speed control sensor for temperature-dependent regulation of fan-and-filter units to reduce noise and energy consumption.
£69.49
Why Choose the Rittal SK3235.450 EC Speed Control Sensor?
The Rittal SK3235.450 is an intelligent EC fan speed control sensor designed for temperature-dependent regulation of Rittal fan-and-filter units. As part of the reliable Rittal SK climate control accessory range, it helps reduce operating noise and energy consumption by automatically adjusting EC fan speed according to enclosure temperature conditions.
This speed control sensor uses an external NTC temperature sensor to monitor enclosure conditions and provide automatic fan speed adjustment. The unit is powered directly via the connected EC fan-and-filter unit and is designed for simple integration with compatible Rittal ventilation systems.
With an IP40 protection rating, a 10–12 V DC operating voltage and a supplied 3 m connection cable, the SK3235.450 provides an efficient solution for improving enclosure ventilation performance while reducing unnecessary fan operation.
Key Advantages
- Temperature-dependent EC fan speed control for efficient enclosure ventilation.
- Reduces operating noise and saves energy by adjusting fan speed automatically.
- Compatible with multiple Rittal EC fan-and-filter unit models.
- External NTC sensor with 3 m connection cable included.
- IP40 protection rating suitable for internal cabinet applications.
- Simple installation through direct connection to EC fan units.
Key Features
- Rittal SK EC speed control series.
- NTC sensor for temperature-dependent speed regulation.
- Fixed setpoint at 35 °C.
- Linear control range from +20 °C to +35 °C.
- Minimum fan speed: 10%.
- Maximum fan speed: 100%.
- Compatible with Rittal 3240, 3241, 3243, 3244 and 3245 fan-and-filter units.
- Suitable for Rittal EC fan models 3140.500 and 3140.510.
Efficient Control for Industrial Enclosure Ventilation
Efficient enclosure ventilation requires balancing cooling performance, energy consumption and operating noise. The Rittal SK3235.450 EC speed control sensor automatically adjusts fan operation based on enclosure temperature, helping maintain optimal thermal conditions.
By reducing unnecessary fan speed during lower heat loads and increasing airflow when temperatures rise, the sensor supports improved energy efficiency and quieter operation of industrial electrical cabinets. It is ideal for automation systems where reliable enclosure climate control is essential.
Typical Applications
- Industrial control cabinets.
- Automation and machine-building enclosures.
- PLC and electrical control panels.
- Manufacturing equipment cabinets.
- Rittal EC fan-and-filter ventilation systems.
- Industrial enclosure climate management systems.
Technical Specifications
| Manufacturer | Rittal |
|---|---|
| Series | SK Climate Control Accessories |
| Model | SK3235.450 |
| Product type | EC fan speed control sensor |
| Application | Temperature-dependent EC fan regulation |
| Rated operating voltage | 10–12 V DC |
| Protection rating | IP40 |
| Control characteristic | Fixed setpoint 35 °C |
| Control range | +20 °C to +35 °C |
| Sensor type | External NTC temperature sensor |
| Connection cable length | 3 m |
| Operating temperature range | -25 °C to +80 °C |
| Compatible units | 3240.500, 3241.500, 3243.500, 3244.500, 3245.XXX, 3140.500, 3140.510 |
| Weight | approx. 0.2 kg |
Frequently Asked Questions
What is the Rittal SK3235.450 used for?
The SK3235.450 is used to control the speed of Rittal EC fans according to enclosure temperature, improving ventilation efficiency.
How does the SK3235.450 control fan speed?
The sensor uses an NTC temperature sensor to provide temperature-dependent fan speed regulation.
What voltage does the SK3235.450 require?
The speed control sensor operates at 10–12 V DC supplied through the connected EC fan-and-filter unit.
Which Rittal units are compatible with the SK3235.450?
The sensor is compatible with Rittal 3240, 3241, 3243, 3244 and 3245 fan-and-filter units, along with compatible EC fan models.
What temperature range does the SK3235.450 control?
The sensor provides a linear control range between +20 °C and +35 °C, with maximum fan speed reached at 35 °C.
Trusted by Industrial Automation Professionals
Rittal SK EC speed control accessories provide intelligent fan management solutions that improve enclosure ventilation efficiency, reduce energy consumption and support reliable industrial operation.
