DANFOSS RT Series Pressure Switch

DANFOSS RT Series Pressure Switches are high-quality pressure control devices designed for general industrial systems, marine applications, and boiler installations. They provide accurate control of both pressure and differential pressure, and are built to operate reliably across a wide temperature range from -50°C to 150°C.

Certified to SIL 2 in accordance with IEC 61508 and rated IP66 for dust and water ingress protection, the RT Series features a rugged construction and long service life—ideal for applications where dependable performance is essential.

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DANFOSS RT Series Pressure Switch | Pressure Control for Industrial and Marine Applications

DANFOSS RT Series pressure switches are widely trusted pressure control devices used across industries worldwide. They are designed for pressure switching (pressure switch), differential pressure switching (differential pressure switch), and control with an adjustable neutral zone. The RT Series is well suited for installation in steam systems, refrigeration systems, boilers, and heavy-duty machinery where dependable performance is essential.

Key Features of the DANFOSS RT Series

High accuracy with fast response
Simple, rugged design that is easy to service
Excellent repeatability
Long service life, even in harsh environments
Marine approvals available (marine approved)
Safety Integrity Level: SIL 2 in accordance with IEC 61508

Technical Data

Designation	RT pressure switches
Ambient temperature	In general: -50 to 70 °C
	Diaphragm version: -10 to 70 °C
	TÜV approved: -40 to 70 °C
Media temperature	In general: -50 to 100 °C
	Diaphragm version: -10 to 90 °C
	TÜV approved: -40 to 150 °C
Contact system	Single-pole changeover switch (SPDT), see Figure 22
Contact load	Alternating current: AC-1: 10 A, 400 V; AC-3: 4 A(1), 400 V
Contact load	AC-15: 3 A(1), 400 V
Contact material: AgCdO	Direct current:
Contact material: AgCdO	DC-13: 12 W, 220 V (see Figure 23)
Special contact system	See spare parts and accessories
Cable entry	2 PG 13.5 for 6–14 mm diameter cables
Solid / stranded	0.2–2.5 mm²
Flexible, without ferrules	0.2–2.5 mm²
Flexible, with ferrules	0.2–1.5 mm²
Tightening torque	Max. 1.5 Nm
Enclosure	IP66 in accordance with IEC 529 and EN 60529. Units supplied with external reset: IP54. The housing is made of bakelite (DIN 53470). The cover is made of polyamide.

Dimensions

Pressure Switches

(1) Preferred versions.
(2) Supplied with ø6 / ø10 mm weld nipple.
(3) With seal cap.

Pressure Switches with Adjustable Neutral Zone

(1) Preferred versions.
(2) Supplied with ø6 / ø10 mm weld nipple.

Differential Pressure Switches

(1) Preferred versions.
(2) Supplied with ø6 / ø10 mm nipple.
(3) Non-snap action contacts
(4) With SPST and SPDT contact system for alarm and cut-off function at 0.8 and 1 bar.