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Table Of Contents

Pressure switches and thermostats

KP Pressure Switches

Danfoss KP switches are used for regulating,

monitoring and alarm systems in the industry.

They provide automatic limit protection or

manual reset limit protection for pressure

systems. Can be used with steam, air, gaseous

and liquid media.

The pressure switches are tted with single-

pole changeover switch (SPDT). The position of

the switch depends on the setting of the

pressure switch and the pressure in the

connector.

KP Thermostats

KP thermostats are temperature-operated

electric circuit breakers. The thermostats are

tted with single-pole changeover switch

(SPDT)

The position of the switch depends on the

thermostat setting and sensor temperature. A

KP thermostat can be connected and switch to

single-phase alternating current motors of up

to 2 kW.

AI209986438809en-000602

Data Sheet

Pressure switches and thermostats

Type KP

For steam, air, gaseous and liquid media

Summary of content (9 pages)

PAGE 1
Data Sheet Pressure switches and thermostats Type KP For steam, air, gaseous and liquid media KP Pressure Switches Danfoss KP switches are used for regulating, monitoring and alarm systems in the industry. They provide automatic limit protection or manual reset limit protection for pressure systems. Can be used with steam, air, gaseous and liquid media. The pressure switches are fitted with singlepole changeover switch (SPDT).
PAGE 2
Pressure switches and thermostats, Type KP Features • Wide regulating range • Small dimensions ⁃ Space-saving, easy to install in panels • Shock and impact resistant • Ultra-short bounce time. Limits wear to an absolute minimum and increases reliability • Snap action electrical contacts minimize chatter, bounce, and wear, and ensure long term electrical and mechanical reliability • Electrical connection from front of the unit.
PAGE 3
Pressure switches and thermostats, Type KP Thermostats Table 2: Design and function Simplified drawing of KP thermostat without front cover and scale. Version with manual reset.
PAGE 4
Pressure switches and thermostats, Type KP Product specification Technical data Pressure switches Table 3: Technical data Features Descriptions Ambient temperature -40 – 150 ˚F (175 ˚F for short period of time) Media temperature -40 – 212 ˚F Sensor material Tinned copper Cu/Sn5 Parts in contact with medium: Bellows: Stainless steel Pressure connection: Free-cutting steel, nickel plated Wire dimension 12 AWG max. Contact system SPST (close on temp.
PAGE 5
Pressure switches and thermostats, Type KP Thermostats Table 6: Contact system and application Switch type - single pole double throw Switch action Application Terminals 1 – 4 close high and open low Terminals 1 – 2 can be used as low temperature alarm Low pressure cut-out Terminals 1 – 2 open high and close low Terminals 1 – 4 can be used as high temperature alarm High pressure cut-out Setting Pressure switches Cut-in and cut-out pressures of the system should always be checked with an accurate pre
PAGE 6
Pressure switches and thermostats, Type KP that have been created as the result of cut-in action. These design features ensure that the cut-out point of the KP switch remains very accurate and completely independent of the magnitude of the current load. FLA - Motor Full Load Amperes FLA is the largest current that a motor or other device is designed to carry at rated voltage and other specific conditions. Also often called current at rated conditions.
PAGE 7
Pressure switches and thermostats, Type KP Dimensions [in] Pressure switches Table 7: Dimensions Figure 2: KP 35, KP 36 and KP 37 Approximate weight: 0.83 lb Figure 3: KP 34 Approximate weight: 0.9 lb Thermostats Figure 4: KP 79, KP 81 © Danfoss | Climate Solutions | 2021.
PAGE 8
Pressure switches and thermostats, Type KP Ordering Pressure switches Table 8: Ordering Differential [psi] Reset Pressure connec‐ tion Max. operating pressure [psig] Min.
PAGE 9
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