Compact Pressure Switch

Series
A1N

Compact Pressure Switch

Dimensional Enlargement

Service Manual

The A1N Pressure Switch is a low cost open case control suitable for water, oil, and non-combustible gas service with an electrical rating of 5 amperes at 125/250 VAC. The compact Series A1N control is available in field adjustable operating ranges from as low as 1.5 to 4.5 psig up to 41 to 100 psig (10.3-31.0 kPa to 283-690 kPa). The A1N features a Buna-N diaphragm and cast zinc housing with a proof pressure of 200 psig (1379 kPa).

OPTIONS

For Low Temperature Option, -20 to 180°F (-29 to 82°C), Setpoint shift greater than 10% may occur below 0°F. The available ranges versus model numbers are shown in the table below.

PHYSICAL DATA

     Proof Pressure: 200 psig (1379 kPa).

     Operating Temperature: 0 to 180°F (-18 to 82°C).

     Switch Type: SPDT snap action.

     Mounting and Connections: 1/8"- 27 NPT(M).

     Electrical Connections: .110 x .020 quick connect tabs.

     Electrical Ratings: 5 A @ 125/250 VAC, 1/10 HP @ 125/250 VAC.

     Pressure Ranges: 1.5-4.5 PSI (10-31 kPa), 4.5-15 PSI (31-103 kPa), 15-41 PSI (103-283 kPa), and 41-100 PSI      (283-690 kPa).

     Setpoint Adjustment: Slotted Screw.

     Housing Materials: Zinc.

     Diaphragm Material: Buna-N.

     Approvals: UL approval is in progress, consult Sales.

     Media Compatibility: Oils, water and non-combustible gases.

     Weight: 6.0 ounces.

     Installation: Within 20 degrees of vertical.

STOCKED MODELS

Ratings: 0 to 180°F (-18 to 82°C) 5A @ 125/250 VAC, 1/10 HP @ 125/250 VAC

Model
Number Range, PSIG Range, kPa Typical Deadband in psig (kPa) at min./max.

A1N-11 1.5-4.5 10-31 .35/.65 (2.4/4.5)

A1N-21 4.5-15 31-103 .65/.90 (4.5/6.2)

A1N-31 15-41 103-283 1/1.7 (25.5/31)

A1N-41 41-100 283-690 3.7/4.5 (25.5/31)

OPTIONAL MODELS

Ratings: -20 TO 180°F (-29 to 82°C) 5A @ 125/250 VAC, 1/10 HP @ 125/250 VAC

Model
Number Range, PSIG Range, kPa Typical Deadband in psig (kPa) at min./max.

A1N-12 2.0-4.5 13.8-31 .55/.60 (3.8/4.1)

A1N-22 4.5-15 31-103 .75/1.0 (5.2/6.9)

A1N-32 15-41 103-283 1.4/1.6 (9.7/11)

A1N-42 41-100 283-690 4.8/6.0 (33/41)

Model Number	Range, PSIG	Range, kPa	Typical Deadband in psig (kPa) at min./max.
A1N-11	1.5-4.5	10-31	.35/.65 (2.4/4.5)
A1N-21	4.5-15	31-103	.65/.90 (4.5/6.2)
A1N-31	15-41	103-283	1/1.7 (25.5/31)
A1N-41	41-100	283-690	3.7/4.5 (25.5/31)

Model Number	Range, PSIG	Range, kPa	Typical Deadband in psig (kPa) at min./max.
A1N-12	2.0-4.5	13.8-31	.55/.60 (3.8/4.1)
A1N-22	4.5-15	31-103	.75/1.0 (5.2/6.9)
A1N-32	15-41	103-283	1.4/1.6 (9.7/11)
A1N-42	41-100	283-690	4.8/6.0 (33/41)