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Product Specifications:
| Item | Pressure Switch |
| Contact Form | SPDT |
| Electrical Connection | 3 Screw Type, Common, Normally Open, Normally Closed |
| Electrical Connection Type | Screw Terminals |
| Electrical Rating | 15A @ 120 to 480V AC, 60 Hz. Resistive 1/8 Hp @ 125V AC, 1/4 Hp @ 250V AC, 60 Hz. De-Rate to 10A |
| Enclosure Rating | EXP, GP, WP |
| For Pressure Type | Differential |
| Housing Type | Conduit Box |
| Maximum Operating Temperature | 180°F |
| Maximum Pressure Rating | 25 psi |
| Minimum Operating Temperature | -30°F |
| Mounting Hole Center To Center Distance | 1 1/8" |
| Mounting Hole Diameter | 1/16" |
| Mounting Orientation | Vertical |
| Number Of Switches | 1 |
| Operating Temp. Range | -30°F to +180°F |
| Overall Depth | 4 5/16" |
| Overall Height | 4 3/16" |
| Overall Width | 4 5/16" |
| Power Requirement | 15A At 120-480V AC |
| Pressure Range | 5 in. wc to 44 in. wc |
| Pressure Set Point | 5 in. wc to 44 in. wc |
| Product Type | Pressure Switch |
| Sample Line Connection Size | 1/8" |
| Sample Line Connection Type | NPT |
| Sample Line Connector Type | NPT |
| Switch Voltage | 120-480V AC |
| Switching Differential | 5 in. wc to 44 in. wc |
| Type Of Set Point | Adjustable |
Shipping Info:
| Ship weight (kg) | 0.66 |
| Ship height (cm) | 9.17 |
| Ship length (cm) | 10.16 |
| Ship width (cm) | 9.76 |
| Country of Origin | US |
Product Details:
Essential for industrial environments, the Dwyer 1800 Series low differential pressure switch combines small size and low price with 2% repeatability for enough accuracy for all but the most demanding applications. Set point adjustment inside the mounting stud permits mounting switch on one side of a wall or panel with adjustment easily accessible on the opposite side. UL and CSA listed, and FM approved.
Product Variants
| Product | Model | Contact Form | Mounting Orientation | Enclosure Rating | Operating Temp. Range | Price | |
|---|---|---|---|---|---|---|---|
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1823-00 | SPDT | Vertical | EXP, GP, WP | -30°F to +180°F | €204.08 | |
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1823-5 | SPDT | Vertical | EXP, GP, WP | -30°F to +180°F | €180.11 | |
![]() |
1823-10 | SPDT | Vertical | EXP, GP, WP | -30°F to +180°F | €195.07 | |
![]() |
1823-80 | SPDT | Vertical | EXP, GP, WP | -30°F to +180°F | €179.33 | |
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1823-1 | SPDT | Vertical | EXP, GP, WP | -30°F to +180°F | €185.16 | |
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1823-0 | SPDT | Vertical | EXP, GP, WP | -30°F to +180°F | €192.43 |
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Contact us
Contact your account manager right away to get personal advice.
We're available Monday through Friday, from 07:30 until 17:00.
DWYER INSTRUMENTS 1823-40 Pressure Switch
€182.32 /unit




