Ueda Seisakusho PL-650 Series Pressure Switch

Manufacturer: Ueda Seisakusho Co., Ltd.
Model : PL-650 series

Features

The PL-650 series is ideal for indoor locations that require dust-proofing and drip-proofing, and like the PL-550 series, the opening and closing pressure difference (ON-OFF width) can be set narrowly, making it widely used in all industries.
A metal bellows is used in the pressure receiving part, making it a snap action switch with few malfunctions and variations, and the quick action mechanism at the tip of the main operating lever makes it a long-lasting and highly reliable pressure switch.

Item	Specification
Product Name	Indoor Dust-proof and Drip-proof Pressure Switch
Size	W.125.5 x D.74.5 x H.173 mm
Protection Structure	IP52 (IEC529) equivalent
Durability	Electrical & Mechanical Life: 300,000 times or more
Weight	Approx. 1.3 kg
Pressure Receiving Part	Bellows Type
Material	Phosphor Bronze

Model	Pressure Adjustment Range (Range) MPa		ON-OFF Pressure Differential Range (Diff.) MPa		Pressure Resistance (MPa)
Model	Minimum	Maximum	Smallest	Largest	Pressure Resistance (MPa)
PL-650-1-R3B	0	0.16	0.012	0.1	1.5
PL-650-2-R3B	0	0.3	0.015	0.2	1.5
PL-650-3-R3B	0.01	0.5	0.02	0.2	1.5
PL-650-4-R3B	0.02	0.7	0.025	0.35	1.5
PL-650-5-R3B	0.05	1.0	0.04	0.4	1.5
PL-650-6-R3B	0.2	2.0	0.08	0.5	2.5
PL-650-7-R3B	0.5	4.0	0.15	1.0	5.0
PL-651-10-R3B	0	0.12	0.005	0.06	0.5
PL-651-11-R3B	0	0.2	0.005	0.15	0.5
PL-651-12-R3B	0.01	0.5	0.01	0.25	1.0
PH-650-8-R3SB	0.5	6.0	0.2	1.0	10.0
PH-650-9-R3SB	1.0	8.0	0.35	2.0	10.0

*PH-650-8 and PH-650-9 are for high pressure control and the standard material for the pressure receiving part is stainless steel (SUS316).

(A)	PL = Low/Medium Pressure PH = High Pressure
(B)	550 = Indoor General-Purpose Type 650 = Indoor Dustproof / Drip-Proof Type
(C)	(No symbol) = Contact configuration 1a1b (standard) W = Contact configuration 2ab
(D)	5 = Pressure Adjustment Range (Refer to spec table)
(E)	R3 = Connection thread R3/8 (PT 3/8 thread) G3 = Connection thread G3/8 (PF 3/8 thread) F6 = Connection Thread ⌀6mm Copper Tube Flare Fitting (Note 1, Note 2)
(F)	No symbol = Bellows and housing material: Phosphor bronze, brass S = Bellows and housing Material: Stainless steel (SUS316)
(G)	No symbol = Without mounting bracket B = With mounting bracket

Note 1: The connection part material is only available in phosphor bronze specification.
Note 2: For the φ6 flare type connection, the unit comes with a mounting bracket.