Ashcroft A Data sheet

219

Miniature Pressure Switches,
Watertight Brass Body,
Type A-Series

• Wide variety of electrical connec

-

tions including spade, screw and DIN

• Rugged brass body sealed for
environmental protection

• Precision snap-acting switch
element

• Choice of field-adjustable or
factory-adjusted to setpoint
requirements

• UL and CSA listed

1 - FUNCTION

APS - Pressure switch, single setpoint, fixed deadband,

factory set

APA - Pressure switch, single setpoint, fixed deadband,

field adjustable

2 - BODY (ENCLOSURE)

RB - Brass/polycarbonate body with polycarbonate

switch seal

3A - SWITCH ELEMENT CODE

SPDT Switch Elements

Code

UL/CSA Listed

D General Purpose 5A, 125/250 Vac
5A, 28 Vdc

M Gold Contacts 1A, 125 Vac

3B - ELECTRICAL CONNECTION CODE

Code Electrical Terminations

L Wire leads, 3-#18 AWG Insulated – 12˝
S Screw terminals, 3-#6 binding head screws
T Spade terminal, 3-.187 male spade
C 1/2 NPT male conduit connection with wire

leads
H Micro DIN connector

4 - ACTUATOR SEAL

Process
Temperature
Code Material Limits (°F)

B Buna N 0-150
V Viton 20-200
T Teflon 0-150

Stainless Steel Piston/

H

Viton O-Ring

5 - PRESSURE CONNECTION CODE

Code Description
01
02

1

⁄8 NPT Male

1

⁄4 NPT Male

6 - A-SERIES OPTIONS

Code Description
XFS Factory adjusted setpoints
XNH Tagging stainless steel
X6B Cleaned for oxygen service

Ambient operating temperature limits –20°F to 150°F. Setpoint
shift of up to one additional setpoint repeatability per 50°F change
is normal.

Note: Switches calibrated at 70°F reference.

20-200

The Ashcroft® A-Series pressure
switches are designed for tough indus
trial and

OEM applications requiring a

-

durable, high-quality miniature switch.

Ideal for pressure alarm, shutdown,
or control on heavy vehicles, machine
tools, electronic equipment, engines,
compressors, and wherever size is a
consideration or equipment is being
downsized.

7A - AP NOMINAL RANGE & PERFORMANCE TABLE – CODES B, V, T ACTUATOR SEAL

Setpoint Setpoint
Proof Repeatability Adjustability Deadband
Nominal Range Pressure APS (Factory Set) Range (All Switch Elements)

psi bar psi psi psi Buna N Viton & Teflon

30 in.Hg Vac –1 1000 ±1.0 in.Hg –30 to –4 in.Hg 1-5 in.Hg 1.0-7.0
15 1 1000 ±0.5 1.5-15
30 2 1000 ±0.5 3-30 0.2-1.3 0.3-2.5
60 4 1000 ±1.0 6-60 0.3-1.5 0.5-3.0
100 7 1000 ±2.0 10-100 1.0-5.0 4.0-10
200 14 1000 ±5.0 20-200 4.0-12
400 28 1600 ±10
600 40 2400 ±15

. 40-400 5.0-20. 8.0-25.
. 60-600 8.0-25. 10.0-34...

0 0.1-1.0 0.2-2.0

. 5.0-18.

.

7B - AP NOMINAL RANGE & PERFORMANCE TABLE – CODE H ACTUATOR SEAL

Setpoint Setpoint
Proof Repeatability Adjustability
Nominal Range Pressure APS (Factory Set) Range Deadband

psi bar psi psi psi Code D, M, DD, MM

1000 70 4000 ±20

. 100-1000 50-100

TO ORDER THIS A-SERIES PRESSURE SWITCH:

Select: APS RB DL BO2 XFS 30#

1. Function:

2. Body:

Set at:

(Add your setpoint

requirements.)

3. Electrical:

4. Pressure Port:

5. Options (see table 6):

6. Pressure Range (see table 7A & 7B):

Consult factory for guidance in product selection
Phone [phone], Fax [phone] or
visit our web site at www.ashcroft.com