Danfoss KPS 45 High Pressure Switch for Industrial & Marine Systems

A. Product Overview

The Danfoss KPS 45 is a heavy-duty mechanical pressure switch from the KPS series, specifically engineered for high-pressure and pulsating pressure applications. It is used for alarm, monitoring, and control functions in industrial and marine systems where conventional pressure switches may fail due to vibration, pressure spikes, or harsh environments.

The KPS 45 features a robust metal enclosure with a high ingress protection rating, making it suitable for both indoor and outdoor installations. Its construction ensures stable switching performance even in systems exposed to shock, vibration, and fluctuating pressure loads.

B. Working Principle

The KPS 45 operates on a mechanical diaphragm-based pressure sensing principle. System pressure acts on the internal diaphragm capsule, which is mechanically linked to a snap-action electrical contact system. When the pressure crosses the set value, the contacts change state to activate alarms, stop equipment, or initiate control actions.

An adjustable differential allows controlled pressure cycling, preventing frequent on-off switching (hunting) in systems with pressure fluctuations. This mechanical design ensures dependable operation without reliance on external power or electronics, which is essential in critical industrial and marine environments.

C. Key Applications

• High-pressure air and gas compressors

• Diesel engine lubrication and control systems

• Power generation and auxiliary systems

• Marine engines and onboard utility systems

• Hydraulic and fuel systems with pressure pulsations

• Industrial alarm and safety monitoring systems

D. Why Industries Use This Product

Industries select the KPS 45 primarily for safety, reliability, and equipment protection. It helps prevent damage caused by overpressure conditions, supports early fault detection, and ensures controlled operation of high-value machinery.

In systems with pulsating or rapidly changing pressures, standard pressure switches can suffer from premature failure or unstable switching. The KPS 45 is specifically designed to handle such conditions, reducing false alarms, minimizing downtime, and extending equipment life. Its widespread acceptance in marine and industrial standards also supports compliance and standardization across projects.

E. Suitable Buyers

• Industrial compressor and engine OEMs

• Marine system integrators and shipyards

• Power plant engineering and utility teams

• Maintenance and reliability engineers

• Procurement teams sourcing standardized high-pressure switches

It is commonly used for replacement in existing KPS installations and preferred in retrofit projects where high-pressure reliability is mandatory.

Quick Answers

What is Danfoss KPS 45?
Danfoss KPS 45 is a high-pressure mechanical pressure switch designed for industrial and marine applications with pulsating pressure conditions.

Where is Danfoss KPS 45 used?
It is used in compressors, diesel engines, power plants, hydraulic systems, and marine onboard installations.

Why is Danfoss KPS 45 required in industry?
It protects equipment from overpressure, supports alarm and control functions, and ensures reliable operation in harsh environments.

Who typically uses Danfoss KPS 45?
OEMs, marine integrators, maintenance teams, power utilities, and industrial procurement professionals commonly use the KPS 45.

FAQ Section

Is Danfoss KPS 45 suitable for high-pressure and pulsating applications?
Yes. The KPS 45 is specifically designed for high-pressure systems and strongly pulsating media, making it suitable for compressors, hydraulic systems, and engine applications where pressure stability is critical.

Can KPS 45 be used in marine and offshore environments?
The KPS 45 is widely used in marine and onboard systems due to its robust construction, vibration resistance, and high enclosure protection suitable for harsh operating conditions.

What is the role of adjustable differential in KPS 45?
The adjustable differential helps control pressure cycling and prevents frequent switching, reducing contact wear and improving overall system stability.

Is KPS 45 commonly used as a replacement pressure switch?
Yes. It is commonly selected as a replacement in existing KPS series installations and is widely accepted in standardized industrial and marine systems.

Does KPS 45 contribute to system safety and equipment protection?
By triggering alarms or shutdowns during abnormal pressure conditions, the KPS 45 plays a key role in protecting machinery, reducing failure risk, and avoiding unplanned downtime.