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20PS-0.05 Pressure Switch - 7/16-20UNF Female, 0.05MPa OFF/0.2MPa ON (Blade)

Model: 20PS-0.05; Thread: 7/16-20UNF Female; Connection: Blade (plug-in); Switch points: OFF=0.05MPa, ON=0.2MPa; Working pressure: Low-pressure grade; Temp range: Ambient -30°C~+80°C, Medium -50°C~+120°C; Electrical rating: 125VA (24Vac), 375VA (120/240Vac); Life cycles: 30k/50k/100k optional; Burst pressure: 5000PSI.

Model:
20PS-0.05 Pressure Switch
Brand:
SHINE
Code:
20221160


Availability:



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Product Description

20PS-0.05 Pressure Switch (7/16-20UNF Female, Blade Connection)

A compact and reliable low-pressure control solution, the 20PS-0.05 combines 7/16-20UNF female thread and blade connection for seamless integration. Engineered for precise pressure switching, it’s tailored to meet the protection needs of HVAC systems, refrigeration equipment, and small industrial machinery, balancing convenience, durability, and stable performance.

Core Advantages

Precise low-pressure protection: Triggers OFF at 0.05MPa to prevent under-pressure damage and auto-resets ON at 0.2MPa, ensuring timely system protection and recovery for low-pressure circuits.
Easy installation & integration: 7/16-20UNF female thread (standard industrial thread) enables secure pipeline connection. Blade plug-in design allows quick electrical assembly, while factory-pre-set parameters eliminate on-site adjustment.
Durable & reliable: Sealed structural design enhances leak-proof performance, with wide temperature tolerance (-30°C~+80°C) to adapt to diverse working environments, ensuring long-term stable operation.

Key Specification Table

Parameter	Details
Model	20PS-0.05
Thread Interface	7/16-20UNF Female
Connection Type	Blade (Plug-in)
Switch Action Points	OFF: 0.05MPa; ON: 0.2MPa
Operating Temperature	Ambient: -30°C~+80°C; Medium: -50°C~+120°C
Electrical Capacity	125VA (24Vac); 375VA (120/240Vac)
Service Life Cycles	30,000/50,000/100,000 times (optional)
Burst Pressure	5000PSI

Working Principle

Equipped with an internal reversible stainless steel diaphragm. When system pressure drops to 0.05MPa, the diaphragm flips to disconnect the switch (OFF), avoiding under-pressure damage. As pressure rises to 0.2MPa, the diaphragm automatically resets, re-engaging the switch (ON) to restore system operation—achieving seamless auto-control without manual intervention.

Application

Key Application Scenarios

HVAC & Refrigeration Systems

Ideal for household air conditioning units, small commercial refrigerators, display freezers, and mini cold storage. The 7/16-20UNF female thread fits standard low-pressure pipelines, while the blade connection simplifies wiring. It protects compressors from damage caused by abnormal low pressure, maintaining consistent cooling efficiency for residential, retail, and small business use.

Small Industrial & Precision Equipment

Suitable for low-pressure pneumatic tools, small hydraulic systems, lubrication circuits, and laboratory precision instruments. Widely used in light manufacturing, electronic assembly, and automotive maintenance tools. The standard 7/16-20UNF thread ensures compatibility with industrial pipelines, and the blade connection enables quick replacement, making it a practical choice for scenarios requiring efficient low-pressure protection in limited spaces.