Ueda Seisakusho PSP Series Pressure Switch

Manufacturer: Ueda Seisakusho Co., Ltd.
Model : PSP series

Features

The PSP-200A series is designed for automatic control of small and medium-sized air compressors.
When the compressor starts and the pressure rises, the electrical contacts turn OFF when it reaches the upper limit setting, and
at the same time, the release valve attached to the rear automatically exhausts the residual pressure in the compressor pressurization section from the piping.
A special bellows is used in the pressure receiving section, and the release valve operates and the contacts open simultaneously with a rapid movement of the operating lever, and the release valve returns to its original position and the contacts close at startup.

Item	Specification
Product Name	Indoor pressure switch
Size	W.105.5 x D.82 x H.139.5 mm
Durability	Electrical & Mechanical Life: 100,000 times or more
Weight	Approx. 1.15 kg
Pressure Receiving Part	Bellows Type
Material	Phosphor Bronze
Applicable Capacity	Single-phase 110V・0.4kW Three-phase 220V・0.75kW
Insulation Resistance	DC 500V Megger — 50 MΩ or more
Dielectric Strength	AC 2,000V for 1 minute

Model	Pressure Adjustment Range (Range) MPa		ON-OFF Pressure Differential Range (Diff.) MPa		Pressure Resistance (MPa)	Relief Valve (Piping Size)
Model	Minimum	Maximum	Smallest	Largest	Pressure Resistance (MPa)	Relief Valve (Piping Size)
PSP-200A	0.2	1.5	0.15	0.3	1.7	None
PSP-200A-R1						RV–14N(φ6mm)
PSP-200A-R2						RV–22(φ6.35mm)
PSP-200B	0.05	1.5	0.1	0.3	1.7	Cannot be mounted

The release valves to suit the piping size: RV-14N for Φ6mm, RV-22 for Φ6.35mm (1/4in.)
Since piping sizes vary depending on the compressor manufacturer, be sure to check the piping size before purchasing and install the appropriate release valve.

(A)	A = Relief valve can be mounted B = Relief valve cannot be mounted
(B)	R1 = With Relief Valve RV–14N (for φ6 mm piping) R2 = With Relief Valve RV–22 (for φ6.35 mm piping)