KPS 35 (060-310066) Danfoss Pressure Switch

Product Overview

The KPS 35 (060-310066) is a heavy-duty, industrial-grade pressure switch engineered for demanding B2B applications such as marine, power plant, and heavy industrial process control. Designed to withstand high vibration and harsh environments, the Danfoss 060-310066 (060-310066) provides reliable monitoring and control of pressure in steam, air, and liquid systems. This model features a high-durability bellows sensing element and a gold-plated SPDT (Single Pole Double Throw) contact system, ensuring superior electrical conductivity even in low-load signal circuits. Its robust construction and high enclosure rating make it a preferred choice for safety-critical monitoring in maritime and industrial machinery.

Technical Configuration

The KPS 35 is built for resilience, featuring a Pg 13.5 screwed cable entry with a metal cable gland to ensure a secure, liquid-tight electrical connection. The pressure sensing is handled by a high-grade bellows assembly, which offers excellent repeatability and a long service life under fluctuating pressure conditions. The gold-plated contact function is specifically designed to prevent oxidation, making it ideal for PLC interfaces and low-voltage control systems. With an ambient temperature range of -40 °C to 70 °C (and short-term tolerance up to 80 °C), this switch is capable of operating in extreme engine room or outdoor environments.

Technical Specifications

Technical FAQs

What are the advantages of gold-plated contacts in the 060-310066?

Gold-plated contacts provide a high degree of reliability in applications where the switch is connected to a PLC or electronic control module. Because gold does not oxidize, it ensures a low-resistance path for low-voltage signals, preventing "dry circuit" failures common with standard silver contacts.

Can this switch be used in marine applications?

Yes, the KPS series is specifically designed and approved for marine use. Its high resistance to vibration (up to 4g) and shock, combined with its robust metal enclosure, makes it suitable for mounting on ship engines, pumps, and compressors.

Is the KPS 35 suitable for steam applications?

Yes, the bellows sensing element and the material selection make it compatible with steam, air, and water. For high-temperature steam, it is recommended to use a siphon to protect the bellows from direct thermal stress.

Engineering & Installation Guide

• Vibration Management: For optimal performance in high-vibration environments (such as direct engine mounting), ensure the switch is securely fastened to a rigid bracket. The KPS series is engineered to withstand vibrations, but correct mounting prevents premature fatigue of the electrical connections.

• Electrical Wiring: Utilize the provided Pg 13.5 metal cable gland to maintain the enclosure’s IP rating. When wiring for a PLC, use the gold-plated terminals to ensure signal integrity. For high-power AC loads, ensure the current does not exceed the AC1/AC3 ratings specified.

• Pressure Connection: Use a 14mm wrench to secure the G 1/4 A male pressure connection. Avoid over-tightening, which can distort the bellows housing. It is a best practice to install a pressure snubber if the system is prone to high-frequency pressure pulsations or "water hammer."