Ueda Seisakusho PU3 Series Pressure Switch

Manufacturer: Ueda Seisakusho Co., Ltd.
Model : PU3 series

Features

The PU3 series is a small, lightweight, and simple design, with two adjustment screws that allow the pressure setting and opening/closing pressure difference (ON-OFF width) to be freely adjusted.
The electrical contacts have a snap action mechanism and are resistant to vibration, especially chattering.
The pressure receiving part uses a diaphragm (synthetic rubber), which ensures a long life along with the internal mechanism parts.
Careful consideration is required depending on the type of fluid, so please consult our sales representative for details.

Item	Specification
Product Name	Indoor small pressure switch
Size	W.54Φ x H.89 mm
Durability	Electrical & Mechanical Life: 300,000 times or more
Weight	Approx. 0.35 kg
Pressure Receiving Part	Diaphragm Type
Material	Synthetic rubber (NBR)
Contact Configuration	Single Pole Double Throw (S.P.D.T.) 1a1b (1C)
Wiring Method	VSF 1.25 sq × 300 mm
Insulation Resistance	DC 500V Megger — 100 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)
Model	Pressure Adjustment Range (Range) MPa	Smallest	Largest		Pressure Resistance (MPa)
PU3-01-□C	0.02 ~ 0.16	0.03	0.04	~ 0.1	1.5
PU3-03-□C	0.02 ~ 0.3	0.03	0.04	~ 0.2	1.5
PU3-06-□C	0.05 ~ 0.6	0.04	0.06	~ 0.25	1.5
PU3-10-□C	0.2 ~ 1.0	0.07	0.09	~ 0.3	1.5
PU3-15-□CV	0.2 ~ 1.5	0.1	0.18	~ 0.45	2.0

(A)	06 = Maximum pressure adjustment range: 0.6 MPa
(B)	2C = Connection diameter Rc 1/4 (PT 1/4 thread) 3C = Connection diameter Rc 3/8 (PT 3/8 thread)
(C)	No symbol = Diaphragm material: NBR (※Standard) V = Diaphragm material: FKM
(D)	No symbol = Without body mounting bracket (※Standard) B = With body mounting bracket

Note : Only the PU3-15 type uses FKM (fluororubber) for the diaphragm material as standard.