2 … 5
MC • Karl Dungs
, Inc.
• AA...A1 • Edition 2016.03 • P/N 261392
Specifications
Max. Operating Pressure
MOP = 1.5 PSI (103 mbar)
Ambient / Medium Temperature
-40 °F ... +140 °F
(-40 °C … +60 °C)
Gases
Air and non-aggressive gases.
Not
suitable for natural gas, propane,
butane and other combustable
gases.
Materials in contact with Gas
Housing: Polycarbonate
Switch: Polycarbonate
Diaphragm: NBR-based rubber
Switching contact: Silver (Ag)
°F
0
-40
+140
Gas
AA...A1
SPDT differential pressure switch in pressure and vacuum ranges. The differential pressure acts via the
diaphragm against the force of the setting spring on the micro-switch. The pressure switch operates
without any auxiliary power.
Contact Rating
5 A resistive,
3 A inductive @ 120 VAC
1 A @ 12 - 48 VDC
Electrical Connection
1/4 x 1/32” (6.3 x 0.8 mm)
flat male terminals
Enclosure
NEMA Type 1 / NEMA Type 12 with
appropriate cover
Models Designations & Ranges
Type
Version
Description
Order No.
Factory setting
range
in. W.C.
Switching
hysteresis
in. W.C.
AA-A1-0-...
AA-A1-0-2
AA-A1-0-3
AA-A1-0-4
No cover
No cover
No cover
266906
266904
266908
0.16 - 1.20
0.40 - 4.00
1.00 - 20.00
≤
0.14
≤
0.20
≤
0.40
AA-A1-3-...
AA-A1-3-2
AA-A1-3-3
AA-A1-3-4
Includes NEMA Type 12 cover
and 1/2 NPT conduit connection
Includes NEMA Type 12 cover
and 1/2 NPT conduit connection
Includes NEMA Type 12 cover
and 1/2 NPT conduit connection
266907
266905
266909
0.16 - 1.20
0.40 - 4.00
1.00 - 20.00
≤
0.14
≤
0.20
≤
0.40
Ag
[A]
NEMA
[
V
]
[
A
]
[
Hz
]
[
VA
]
[PSI]
