Siemens - Safety Limit Thermostat - RAK-TW Series Siemens - Safety Limit Thermostat - RAK-TW Series
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RAK-TW1000 Descriptions:

When it comes to critical temperature control applications, Siemens presents the RAK-TW1000 Series Thermal Reset Limit Thermostats. These electromechanical limit thermostats are engineered for precise temperature management and enhanced safety.

Key Features:

  • Temperature Control Precision: The RAK-TW1000 Series is designed to provide precise temperature control. These thermostats feature a single-pole changeover microswitch with a switching capacity of 16 (2.5) A at AC 250 V for contact connection 1-2 and 6 (2.5) A at AC 250 V for contact connection 1-3.

  • Compliant with Standards: These thermostats adhere to DIN EN 14597 standards, providing a reliable and consistent time constant for precise control.

  • Versatile Mounting: The RAK-TW1000 Series offers three flexible mounting options: pipe mounting, pocket mounting, or wall mounting. This adaptability makes them suitable for a wide range of applications.

  • Viewing Window: The thermostats are equipped with a convenient viewing window in the housing, allowing you to monitor the adjusted switch-off temperature without disassembly.

  • Enhanced Protection: Siemens offers two protection classes for these thermostats: IP43 and IP65, ensuring that they are protected against environmental factors and providing enhanced safety.

  • Quick Installation: Designed for fast and hassle-free installation, the RAK-TW1000 Series includes push-in terminals, minimizing downtime during setup.

Applications:

The Siemens RAK-TW1000 Series Thermal Reset Limit Thermostats find their utility in various critical applications:

  • Heat Generation Plants: Ideal for heat generation plants, these thermostats play a pivotal role in supervising the boiler temperature, especially in open heating systems.

  • HVAC Systems: These thermostats are suitable for general use in heating, ventilation, and air conditioning systems, where maintaining temperature control is vital.

How It Works:

When the adjusted switch-off temperature is reached on rising temperature, contact connection 1-2 changes over to contact connection 1-3. When the temperature of the medium falls by the value of the switching differential, the thermal reset limit thermostat (TW) reverts to contact connection 1-2. If the probe has cooled down to a temperature below approximately -20°C, the control current circuit opens but automatically closes again when the temperature rises, ensuring constant temperature control.

Mechanical Design:

The base of these thermostats is made of robust materials, ensuring their durability and reliability. The housing features a viewing window for easy monitoring. Depending on the specific model, these thermostats are available with various protection classes (IP43 and IP65) to suit your environmental conditions.

For precise temperature control and enhanced safety, trust the Siemens RAK-TW1000 Series Thermal Reset Limit Thermostats. These reliable and efficient devices are engineered to protect your systems and equipment, no matter the application.

RAK-TW5000 Description:

When it comes to safeguarding your critical applications against frost and extreme temperatures, Siemens offers the RAK-TW5000 Series Frost Protection Thermostat. These electromechanical thermal reset limit thermostats are engineered to monitor and prevent frost-related issues effectively.

Key Features:

  • Frost Protection Function: The RAK-TW5000 Series is designed to monitor frost protection temperature closely. With a single-pole changeover microswitch, it ensures precise frost protection for your equipment and systems.

  • Reliable Switching Capacity: These thermostats feature a switching capacity of 16 (2.5) A at AC 250 V for contact connection 1-2 and 6 (2.5) A at AC 250 V for contact connection 1-3, ensuring reliable operation.

  • Adherence to Standards: These thermostats adhere to DIN EN 14597 standards, providing a consistent time constant for precise frost protection.

  • Versatile Mounting Options: The RAK-TW5000 Series offers three flexible mounting options: pipe mounting, air duct (with perforated pocket) mounting, or wall mounting. This adaptability allows you to use them in various applications.

  • Viewing Window: The thermostats are equipped with a convenient viewing window in the housing, allowing you to monitor the adjusted limit temperature without disassembly.

  • Enhanced Protection: Siemens offers two protection classes for these thermostats: IP43 and IP65, ensuring that they are protected against environmental factors and providing enhanced safety.

  • Quick Installation: Designed for fast and hassle-free installation, the RAK-TW5000 Series includes push-in terminals, minimizing downtime during setup.

Applications:

The Siemens RAK-TW5000 Series Frost Protection Thermostat is ideally suited for various applications:

  • Heat Generation Plants: These thermostats play a crucial role in heat generation plants by protecting equipment against frost and ensuring smooth operation.

  • HVAC Systems: They are suitable for general use in heating, ventilation, and air conditioning systems, where maintaining temperature control is vital.

  • Frost Protection: The primary function of these thermostats is to provide frost protection for critical systems, preventing damage caused by extreme cold temperatures.

How It Works:

When the adjusted limit temperature is reached due to falling temperatures (frost protection function), contact connection 1-3 changes over to contact connection 1-2. When the temperature of the medium rises by the value of the switching differential, the frost protection thermostat reverts to contact connection 1-3.

If the probe has cooled down to a temperature below approximately -20°C, the control current circuit opens but automatically closes again when the temperature rises, ensuring continuous frost protection.

Part Numbers:
RAK-TW.1000S-H Thermal Reset Limit Thermostat 15...95 °C Capillary 700 mm Clamp-on strap (S55700-P116)
RAK-TW.1000HB Thermal Reset Limit Thermostat 15...95°C Capillary 700mm 100mm Pocket or Clamp-on strap - IP65 (S55700-P115)
RAK-TW.1200B-H Thermal Reset Limit Thermostat 40...120 °C Capillary 700 mm 100mm Pocket (S55700-P117)
RAK-TW.5010S-H Frost protection monitor 10...50 °C Capillary 1600 mm Clamp-on strap (S55700-P122)
RAK-TW.5000HS Frost protection monitor 5...65 °C Capillary 1600 mm Clamp-on strap (S55700-P120)

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Total price $278.00