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20PS-0.2 Pressure Switch - 3/8-24UNF Male, 0.2MPa OFF/0.3MPa ON (Wired)

Model: 20PS-0.2; Thread: 3/8-24UNF Male; Switch points: OFF=0.2MPa, ON=0.3MPa; Connection: Wired; Working pressure range: 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-0.2 Pressure Switch
Brand:
SHINE
Code:
20221155


Availability:



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Product Description

20PS-0.2 Pressure Switch (Wired, 3/8-24UNF Male)

A reliable low-pressure control solution, the 20PS-0.2 is designed for precise pressure switching with a 3/8-24UNF male thread and wired connection. Tailored for scenarios requiring stable low-pressure protection, it combines user-friendly design and durable performance for HVAC, refrigeration, and industrial applications.

Core Advantages

Precise low-pressure control: Triggers OFF at 0.2MPa and auto-resets ON at 0.3MPa, ensuring timely protection and recovery for low-pressure systems.
Convenient integration: 3/8-24UNF male thread enables easy connection to pipelines, while wired connection ensures stable electrical transmission. Factory-pre-set parameters allow direct use without on-site adjustment.
Durable & safe: Sealed structural design enhances leak-proof performance and reliability, adapting to harsh working environments with wide temperature tolerance.

Key Specification Table

Parameter	Details
Model	20PS-0.2
Thread Interface	3/8-24UNF Male
Switch Action Points	OFF: 0.2MPa; ON: 0.3MPa
Connection Type	Wired
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 0.2MPa, the diaphragm flips to disconnect the switch (OFF), preventing low-pressure damage. As pressure rises to 0.3MPa, the diaphragm automatically resets, re-engaging the switch (ON) to restore system operation—achieving seamless auto-control without manual intervention.

Application

HVAC & Refrigeration Low-Pressure Systems

Ideal for household, commercial air conditioning units, refrigerators, and freezers. The 3/8-24UNF male thread and wired connection fit standard low-pressure pipelines, protecting compressors from damage caused by abnormal low pressure and ensuring stable cooling performance. It adapts to diverse refrigeration system requirements with reliable switching.

Industrial Low-Pressure Equipment

Suitable for low-pressure hydraulic systems, pneumatic tools, lubrication systems, and industrial process pipelines. Widely used in manufacturing, automotive maintenance, and small-scale industrial machinery. The wired connection ensures stable signal transmission, while the wide temperature tolerance (-30°C~+80°C) allows operation in various working environments, providing consistent low-pressure protection.