DANFOSS RT Series Temperature Switches

DANFOSS RT Series Temperature Switches are high-accuracy temperature control switches with a single-pole changeover (SPDT) contact arrangement. Built with a rugged, durable construction, they are designed to perform reliably in harsh environments—making them well suited for industrial and marine applications.

They are certified to SIL 2 in accordance with IEC 61508 and feature an IP66 ingress protection rating against dust and water. The RT Series is easy to install and maintain, offering a long service life for dependable operation.

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DANFOSS RT Series Temperature Switch | Temperature Control Switches for Industrial and Marine Applications

DANFOSS RT Series temperature switches (Temperature Switch / Thermostat) are high-precision temperature control devices with a single-pole changeover (SPDT) contact arrangement. The contact position changes according to the temperature sensed and the preset setpoint, enabling accurate and stable temperature control and protection. Designed for reliability and continuous operation, the RT Series is well suited for general industrial use as well as marine applications where durability is essential.

The RT Series supports multiple sensor options, including room sensors, duct sensors, remote capillary tube sensors, and cylindrical remote sensors. This flexibility allows you to select the most suitable configuration for your application—whether for temperature regulation, equipment cut-in/cut-out control, or high/low temperature protection.

Key Features of the DANFOSS RT Series

• Simple, service-friendly design
• High accuracy
• Excellent repeatability
• Long service life
• Certified to all major marine approvals
• Safety Integrity Level (SIL): SIL 2 in accordance with IEC 61508

Technical Data

Designation	RT thermostats
Ambient temperature	-50 to 70 °C. See remarks on Figure 6: Factor for scale deviation.
Contact system	Single-pole changeover switch (SPDT)
Contact load	Alternating current:
	AC-1: 10 A, 400 V
	AC-3: 4 A, 400 V
	AC-15: 3 A, 400 V
Contact material: AgCdO	Direct current:
	DC-13: 12 W, 220 V
	(see Figure 11: Direct current)
Cable entry	2 PG 13.5 for 6–14 mm diameter cables.
Enclosure	IP66 in accordance with IEC 529 and EN 60529. Units supplied with external reset: IP54. The thermostat housing is made of bakelite (DIN 53470). Cover is made of polyamide.