Liquid Level Switch

Technical data: HBSR-HFC-SSR

HBSR-HFC-SSR is a level switch for the detection of HFC refrigerants.

Typically it is installed in/on the refrigerant vessels, pump separators, economisers or heat exchanger.

The sensor is specially built to resist high pressure and low temperatures.

The sensor has universal power supply 90...240 V AC - 50/60 Hz.

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Product features

With solid state relay output NO/NC contact function.
Designed for the industrial refrigeration industry - max pressure 100 bar.
Universal power supply 90...240 V AC - 50/60 Hz.
Clear indication with LED when refrigerant is detected.
Split design which makes it easy to install and make diagnostic on. 




Electrical connection



HBSR SSR Maalsat

* Max temperature specified for R134a.

For R410a, R507, R22, R1234ze & R1234yf the max temperature is +40 °C.


Power supply
Voltage90...240 V AC
Max. load40 W
Plug connectionM12 - DIN 0627 
Output typeSolid State Relay
Contact functionNC or NO
Environmental conditions
Ambient temperatur-30...+50°C
Max pressure100 bar
Protection degreeIP54 *
VibrationsIEC 68-2-6 (4g)
Mechanical specifications
Thread connection3/4”
Material - liquid partsAISI 304 / PTFE
Material - electronic partsNylon 6 (PA)
EMC testEN 61000-2
*For outdoor and low temperature application use low temperature type with built-in heater

Ordering code

OutputThread typeOrdering code
Solid state relay - NO3/4" NPTHBSR-HFC-SSR-2/NO-2
Solid state relay - NO3/4" BSPPHBSR-HFC-SSR-2/NO-6
Solid state relay - NC3/4" NPTHBSR-HFC-SSR-2/NC-2
Solid state relay - NC3/4" BSPPHBSR-HFC-SSR-2/NC-6


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