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NAME: .Adjustable pressure switch, IP 55, 15A 250V, SPDT
MODEL: .MA
印刷电路板的差额压力开关,低压
.
Main features :
Construction : Designed to fulfill requirements for European EN and UL for air and water pressure controls in indoor and outdoor applicati ons, including specific applications for swimming pools and spas envir onnement. (filters, heaters) Stainless steel metal parts avoid corrosion problems in high humidity conditions.
Dimensions : Modern design square shape 50 x 50mm (2" x 2"), easy to
hand screw on pipe fitting
Need only a 62.9mm diameter space around pipe thread to screw (smaller than most round shape types available on the market )
Membrane : EPDM, 45mm diameter NBR or silicone on request
Pressure ranges:
Positive: 25 to 100 mbars, 50 to 400 mbars, 100 to 800 mbars, 200 to 1500 mbars (others on request)
Vacuum : - 10 to - 150 mbars
Basic mechanisms :
- Type MA1 : positive pressure, automatic reset 
- Type MA5 : negative pressure, automatic reset
- Type MA3 : positive pressure, manual reset (SPNC contact opens on pressure rise)
Ratings :
Automatic reset: 2HP 250V, 1HP 110V 60Hz, 15.1A 125/250VAC. (SPDT or SPNC contacts UL,CSA,VDE, CCC approved switch).
Manual reset: 16A 250V, (SPNC contact, VDE approved switch ), Up to 25A 250V available on request on automatic reset type
Terminals : 1/4 QC in standard. Screw terminals available
Ground terminal : M4 stainless steel screw
Adjustment : with knob, numbered positions and visual scale. 
Antivibration locking system on knob.
Maximum pressure : 7 Bars at 20°C
 
Air connection dimensions
Material: Brass
H
L
C
2
B
0
F
N
X
Material: 304 stainless steel
R
U
D
V
Not available
Not available
Not available
Not available
Not available
Thread
1/8" NPT
1/8"BSPT
1/4" NPT
1/4"BSPT
Barbed
Spout for 1/16
ID PVC tube
M10 x 1
M8 x 1.5
Snap on
Other dimensions on request. Other stainless steel grades on request.
 
Main references, with 1/8 NPT brass pipe connection
Pressure range
Automatic reset, no housing 22A 250V
Automatic reset, waterproof housing PG11 cable gland 22A 250V
Manual reset, no housing 16A 250V
Manual reset , waterproof  housing, external reset button PG 11 cable gand 16A 250V
Positive 50 -250 mBars (1-4 PSI)
MA10U647H025DE00
MA10U647H025DE0T
MA30C347H025DE00
MA30C347H025DE0V
Positive 100 – 800 mbars (1.5 to 11PSI)
MA10U647H080DE00
MA10U647H080DE0T
MA30C347H080DE00
MA30C347H080DE0V
Positive 200 mbars - 1.5 Bars (3 - 21 PSI)
MA10U647H150DE00
MA10U647H150DE0T
MA30C347H150DE00
MA30C347H150DE0V
Vacuum
- 150  to - 10 mBars (- 2PSI to - 0.15 PSI)
MA50U647H015DE00
MA50U647H015DE0T
MA70C347H015DE00
MA70C347H015DE0V

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