Danfoss RT 110 Pressure Switch for Industrial & Utility Systems

A. Product Overview

The Danfoss RT 110 is part of the RT series of mechanical pressure switches intended for general industrial and marine applications. It features a pressure-controlled single-pole changeover (SPDT) contact system, where switching occurs based on the actual system pressure relative to the set value.

RT pressure switches are known for their simple mechanical construction, high switching accuracy, and long operational life. The RT 110 is typically selected for applications requiring dependable pressure monitoring and control without the complexity of electronic sensors, especially in harsh or safety-critical environments.

B. Working Principle

The RT 110 operates using a bellows-based mechanical pressure sensing element. Process pressure applied at the inlet connection acts on the bellows, moving the internal spindle. This movement actuates a snap-action SPDT contact system.

When pressure reaches the set range value, the contacts change state. The switch resets when the pressure crosses the set value plus or minus the mechanical differential, depending on whether it is configured for rising or falling pressure operation. This purely mechanical principle ensures repeatable and reliable switching even under vibration and fluctuating operating conditions.

C. Key Applications

• Industrial air and utility compressors

• Pump and water pressure control systems

• Cooling water and circulation systems

• Hydraulic utility circuits

• Marine auxiliary systems

• General industrial alarm and control panels

D. Why Industries Use This Product

Industries use the RT 110 because it provides consistent pressure-based control and protection in systems where pressure deviations can cause equipment damage, inefficient operation, or safety risks. Its mechanical design delivers stable switching accuracy and durability over long service periods.

Improper pressure control can lead to pump cavitation, compressor overload, leakage, or process instability. The RT 110 helps prevent these issues by ensuring timely alarms or control actions when pressure limits are reached. RT series switches are also available with marine approvals and SIL 2 capability, supporting standardized and safety-oriented installations.

E. Suitable Buyers

• Industrial OEMs and panel builders

• Utility and water system integrators

• Marine system installers

• Maintenance and reliability teams

• Procurement teams sourcing standardized pressure switches

The RT 110 is commonly used as a replacement pressure switch in existing RT series installations and is widely accepted in retrofit and standardization projects.

Quick Answers

What is Danfoss RT 110?
Danfoss RT 110 is a mechanical pressure switch used for monitoring and controlling pressure in industrial and utility systems.

Where is Danfoss RT 110 used?
It is used in compressors, pumps, water systems, cooling circuits, marine auxiliaries, and industrial control panels.

Why is Danfoss RT 110 required in industry?
It ensures reliable pressure-based control and protection, helping prevent equipment damage and operational instability.

Who typically uses Danfoss RT 110?
OEMs, system integrators, maintenance teams, utility engineers, and industrial procurement professionals.

FAQ Section

Is Danfoss RT 110 suitable for industrial applications?
Yes. The RT 110 is designed for general industrial and marine use, offering reliable mechanical pressure switching in demanding operating environments.

Can RT 110 be used for both alarm and control functions?
The SPDT contact system allows the RT 110 to be used for alarm signaling as well as direct control of pumps, compressors, and auxiliary equipment.

Is RT 110 suitable for continuous operation?
RT pressure switches are designed for long operational life and stable repeatability, making the RT 110 suitable for continuous-duty industrial systems.

Can RT 110 replace older RT series pressure switches?
Yes. RT 110 is commonly used as a replacement in existing RT installations, subject to matching pressure range and application requirements.

Does RT 110 support standardized and safety-focused installations?
RT series pressure switches support standardized designs and are available with approvals and safety features suitable for critical industrial and marine installations.