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Ranco 017H4705 Low/High Pressure Switch
This device monitors refrigerant pressure to protect the compressor from excessively low suction pressures (preventing freezing or vacuum formation) and excessively high discharge pressures (preventing mechanical damage or overheating).
The Ranco 017H4705 pressure switch is a dual pressure regulator designed for refrigeration and air conditioning systems, providing protection against both low (LP) and high (HP) pressures.
This specific model features automatic reset in case of low pressure and manual reset in case of high pressure (indicated by the abbreviation R/M or Auto/Man).
Technical Specifications
Operating Range (Low Pressure): -0.3 to 7 bar (10 inHg at 100 psi).
Differential (low pressure): Adjustable between 0.6 and 4 bar.
Operating range (high pressure): 7 to 30 bar (100 to 435 psi).
Differential (high pressure): Fixed at approximately 3.5 bar.
Reset type:
Low pressure side: Automatic.
High pressure side: Manual (external reset button).
Pressure connection: 1/4" SAE male (threaded).
Electrical contact: SPDT (single-pole switch).
Capacity: Typically 16 A (resistive) / 10 A (inductive) at 250 V.
This device monitors refrigerant pressure to protect the compressor from excessively low suction pressures (preventing freezing or vacuum formation) and excessively high discharge pressures (preventing mechanical damage or overheating).
The Ranco 017H4705 pressure switch is a dual pressure regulator designed for refrigeration and air conditioning systems, providing protection against both low (LP) and high (HP) pressures.
This specific model features automatic reset in case of low pressure and manual reset in case of high pressure (indicated by the abbreviation R/M or Auto/Man).
Technical Specifications
Operating Range (Low Pressure): -0.3 to 7 bar (10 inHg at 100 psi).
Differential (low pressure): Adjustable between 0.6 and 4 bar.
Operating range (high pressure): 7 to 30 bar (100 to 435 psi).
Differential (high pressure): Fixed at approximately 3.5 bar.
Reset type:
Low pressure side: Automatic.
High pressure side: Manual (external reset button).
Pressure connection: 1/4" SAE male (threaded).
Electrical contact: SPDT (single-pole switch).
Capacity: Typically 16 A (resistive) / 10 A (inductive) at 250 V.
Brand Hemmera:
Ranco
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