Ueda Seisakusho VU7 Series Vacuum Switch

Manufacturer: Ueda Seisakusho Co., Ltd.
Model : VU7 series

Features

The VU7 series is a vacuum switch for indoor use.
It is suitable for narrowing the open/close vacuum difference (ON-OFF width) in negative pressure settings, and for upper limit alarms (single point setting) or lower limit alarms (single point setting).
The adjustment screw is fixed with a vibration and abuse prevention bracket.
The pressure receiving part uses phosphor bronze bellows as standard.
Stainless steel bellows are also available as an option for corrosive fluids, hot water, etc.

Item	Specification
Product Name	Indoor vacuum switch
Size	W.80.75×D.51×H.136 mm
Protection Structure	IP40 (IEC529) equivalent
Durability	Electrical & Mechanical Life: 300,000 times or more
Weight	Approx. 0.45 kg
Pressure Receiving Part	Bellows Type
Material	Phosphor Bronze
Insulation Resistance	100 MΩ or more with DC 500 V megger
Dielectric Strength	AC 2,000 V for 1 minute

Model	Pressure Adjustment Range (Range) MPa		ON-OFF Pressure Differential Range (Diff.) MPa		Pressure Resistance (MPa)
Model	Minimum	Maximum	Smallest	Largest	Pressure Resistance (MPa)
VU7-76-1-R3	−10	−100	7.0	15	0.5
VU7-76-2-R3	−10	−100	15	25	0.5

(A)	1 = Setpoint range for open/close: 7.0 to 15 kPa (refer to specifications)
(B)	R3 = Connection port R 3/8 (PT 3/8 thread) RC2 = Connection port Rc 1/4 (PT 1/4 thread) Note 1 RC3 = Connection port Rc 3/8 (PT 3/8 thread) Note 1
(C)	No code = Bellows and cap: Phosphor bronze, vacuum use (standard product) S = Bellows and cap: Stainless steel (SUS316)