Low Cost OEM Pressure Switch- Series A1B
Buna-N Diaphragm, Optional Weatherproof Enclosure Ranges from 3-20 to 50-500 psig
Low Cost and Reliable, the Series A1 Pressure Switch provides the flexibility required for most industrial applications. Superior 15A contact allows direct control of a motor or pump without the use of external relays - a true time and money savings. Unique features include broad temperature limits for increased application possibilities ad a convenient indicating scale for quick and easy field adjustments. Choose optional brass chamber for water and water-based fluids or 316 stainless steel for harsher applications. Optional weatherproof housing meets NEMA 4X standards.
| Maximum Pressure: | 750 psig (5171 kPa) |
|---|---|
| Temperature Limits: | -40 to 180°F (-40 to 82°C |
| Mounting and Process Connections: | 1/8" NPTF x ½" NPTM |
| Switch Type: | SPDT snap action |
| Electrical Connections: | 3 screw terminals |
| Electrical Ratings: | 15 A @ 120/240/480 VAC, 1/8 HP @ 125 VAC, ¼ HP @ 250 VAC |
| Setpoint Adjustment: | Knurled screw cap |
| Housing Material: | Anodized aluminum standard.Optional: brass or 316SS |
| Diaphragm: | Buna-N |
| O-ring Material: | Buna-N |
| Installation: | Within 20° of vertical |
| Weight: | 6 ox. (.17 kg) |
| Approvals: | UL 508 |
| Model Number | Range, psig | Range, kPa | Deadband in psig kPa at min. - max. |
|---|---|---|---|
| A1B-0-AL-1-1 A1B-0-AL-1-2 A1B-0-AL-1-3 A1B-0-AL-1-4 |
3-20 15-150 25-250 50-500 |
21-140 103-1030 172-1720 345-3450 |
1/3 (7/21) 5/05 (34/103) 8/25 (55/172) 15/50 )103/345) |
| For brass pressure chamber, change AL in Model No. to BR. Example: A1B-0-BR-1-1. For stainless steel pressure chamber, chamber AL in Model No. to SS. Example: A1B-0-SS-1-1. For polycarbonate weatherproof enclosure, change 0 in Model No. to PC. Example: A1B-0-PC-1-1. For 316 stainless steel weatherproof enclosure, change 0 in Model No, to SC. Example: A1B-SC-AL-1-1. A-613 Mounting Bracket. Optional accessory provides rugged, permanent mounting and speeds installation for any Series A1 switch. |
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Suggested Specifications
Pressure switches shall be U.L./C.S.A. listed, operated by a Buna-N diaphragm. Diaphragm motion shall be restrained by a calibrated spr8ing which can be adjusted to set exact actuation pressure. Visible scale shall be pr9ovided. Pressure chamber shall be (aluminum)(brass)(316SS) with 1/8" NPTF x ½" NPTM connection. Contacts shall be SPDT rated 15A @ 120/240/480 VAC. Switch shall be Mercoid Model No. A1B-____.