Danfoss CKB Data sheet

Data Sheet

Pressure switch

Type CKB

Pressure switch for R744 (CO2)

Safety pressure switch CKB are compact disc type pressure switches with fixed set-points for long-standing use in all CO2 refrigeration

systems.

CKB safety pressure switch is used to protect compressor and the system against too high pressure.

CKB safety pressure switch provides excellent performance, ensuring minimal drift of setting and extremely stable operation over the entire lifetime. It provides automatic or manual reset limit protection.

The small size, lightness and high degree of protection means that it can be mounted directly on the refrigeration systems. The switch is available with different pressure settings to suit customer requirements.

AI374346854728en-000102

Pressure switch, type CKB

Features

•Electromechanical design with diaphragm as sensing element

•Fixed pressure set points

•SPDT contact syste

•Automatic (PSH) or manual reset (PZH / PZHH)

•Electrical connection with DIN plug

•Water-proof enclosure (IP65)

•For use as high pressure cut out

•For CO2 subcritical and transcritical CO2 systems up to 143 bar

•Compact design and easy to install

•PED 2014/68/EU Category IV according to EN 12263

© Danfoss | Climate Solutions | 2021.04

AI374346854728en-000102 | 2

Pressure switch, type CKB

Applications

Figure 1: Safety pressure switch in subcritical and transcritical CO2 systems

GC	High pressure switch
High pressure switch
MT
	High pressure switch
LT

© Danfoss | Climate Solutions | 2021.04

AI374346854728en-000102 | 3