NOSHOK 300 Series Mechanical Compact Pressure Switch
SPDT or SPST mechanical switch with adjustable hysteresis and adjustment ranges from vacuum through 4,600psig.

Effective June 16th, 2025 NOSHOK has added a 5% surcharge to this product. The surcharge will appear as a separate line item on each sales order.
- By NOSHOK
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Manufacturer has some models in stock. View available part numbers.
Overview
Features
- Switch adjustment ranges from vacuum through 4,600psig
- SPST or SPDT snap-action function
- Solid silver, self-cleaning contact material
- Zinc-nickel plated steel housing
- CE compliant to suppress RFI, EMI and ESD
- RoHS compliant
- IP65 rated for Hirschmann
- IP67 rated for M12 x 1
Description
The NOSHOK 300 Series pressure switch is a SPST or SPDT snap-action switch with adjustable hysteresis and silver contacts. It offers switch adjustment ranges from vacuum through 4,600psig depending on model and a standard zinc-nickel housing with buna-n diaphragm wetted parts. The 300 Series switch also provides an improved contact rating over the previous version of 6A 125V/250VAC, and 6A 12/24VDC.
Pressure Switch Applications
- Hydraulics & pneumatics
- Pumps & compressors
- Leak detection
- Tank monitoring
- Water management
Documents
In Stock
Manufacturer Stock
Items from manufacturer stock generally ship in 5-7 business days. Expedited shipping is available.
Part Number | Price | Available | |
---|---|---|---|
300H-3-2-100/220-25 |
$128.67 | 50 in stock | |
300H-3-2-100/220-25-SP |
$133.85 | 50 in stock | |
300H-3-2-145/1160-25 |
$128.67 | 50 in stock | |
300H-3-2-145/1160-25-SP |
$133.85 | 50 in stock | |
300H-3-2-145/1750-25 |
$128.67 | 50 in stock | |
300H-3-2-145/1750-25-SP |
$133.85 | 50 in stock | |
300H-3-2-145/2320-25 |
$128.67 | 50 in stock | |
300H-3-2-145/2320-25-SP |
$133.85 | 50 in stock | |
300H-3-2-145/435-25 |
$128.67 | 50 in stock | |
300H-3-2-145/435-25-SP |
$133.85 | 50 in stock | |
300H-3-2-300/2900-25 |
$128.67 | 50 in stock | |
300H-3-2-300/2900-25-SP |
$133.85 | 50 in stock | |
300H-3-2-145/1750-8 |
$94.65 | 42 in stock | |
300H-3-2-145/1750-8-SP |
$99.83 | 42 in stock | |
300H-3-2-300/2900-8 |
$94.65 | 24 in stock | |
300H-3-2-300/2900-8-SP |
$99.83 | 24 in stock | |
300H-3-2-100/220-101 |
$138.01 | 13 in stock | |
300H-3-2-100/220-101-SP |
$143.19 | 13 in stock | |
300H-3-2-100/220-104 |
$138.01 | 13 in stock | |
300H-3-2-145/1160-101 |
$138.01 | 13 in stock | |
300H-3-2-145/1160-101-SP |
$143.19 | 13 in stock | |
300H-3-2-145/1160-104 |
$138.01 | 13 in stock | |
300H-3-2-145/1750-101 |
$138.01 | 13 in stock | |
300H-3-2-145/1750-101-SP |
$143.19 | 13 in stock | |
300H-3-2-145/1750-104 |
$138.01 | 13 in stock | |
300H-3-2-145/2320-101 |
$138.01 | 13 in stock | |
300H-3-2-145/2320-101-SP |
$143.19 | 13 in stock | |
300H-3-2-145/2320-104 |
$138.01 | 13 in stock | |
300H-3-2-145/435-101 |
$138.01 | 13 in stock | |
300H-3-2-145/435-101-SP |
$143.19 | 13 in stock | |
300H-3-2-145/435-104 |
$138.01 | 13 in stock | |
300H-3-2-300/2900-101 |
$138.01 | 13 in stock | |
300H-3-2-300/2900-101-SP |
$143.19 | 13 in stock | |
300H-3-2-300/2900-104 |
$138.01 | 13 in stock | |
300H-3-2-100/220-110 |
$138.01 | 10 in stock | |
300H-3-2-100/220-110-SP |
$143.19 | 10 in stock | |
300H-3-2-100/220-112 |
$138.01 | 10 in stock | |
300H-3-2-100/220-112-SP |
$143.19 | 10 in stock | |
300H-3-2-100/220-113 |
$138.01 | 10 in stock | |
300H-3-2-100/220-113-SP |
$143.19 | 10 in stock | |
300H-3-2-145/1160-110 |
$138.01 | 10 in stock | |
300H-3-2-145/1160-110-SP |
$143.19 | 10 in stock | |
300H-3-2-145/1160-112 |
$138.01 | 10 in stock | |
300H-3-2-145/1160-112-SP |
$143.19 | 10 in stock | |
300H-3-2-145/1160-113 |
$138.01 | 10 in stock | |
300H-3-2-145/1160-113-SP |
$143.19 | 10 in stock | |
300H-3-2-145/1750-110 |
$138.01 | 10 in stock | |
300H-3-2-145/1750-110-SP |
$143.19 | 10 in stock | |
300H-3-2-145/1750-112 |
$138.01 | 10 in stock | |
300H-3-2-145/1750-112-SP |
$143.19 | 10 in stock | |
300H-3-2-145/1750-113 |
$138.01 | 10 in stock | |
300H-3-2-145/1750-113-SP |
$143.19 | 10 in stock | |
300H-3-2-145/2320-110 |
$138.01 | 10 in stock | |
300H-3-2-145/2320-110-SP |
$143.19 | 10 in stock | |
300H-3-2-145/2320-112 |
$138.01 | 10 in stock | |
300H-3-2-145/2320-112-SP |
$143.19 | 10 in stock | |
300H-3-2-145/2320-113 |
$138.01 | 10 in stock | |
300H-3-2-145/2320-113-SP |
$143.19 | 10 in stock | |
300H-3-2-145/435-110 |
$138.01 | 10 in stock | |
300H-3-2-145/435-110-SP |
$143.19 | 10 in stock | |
300H-3-2-145/435-112 |
$138.01 | 10 in stock | |
300H-3-2-145/435-112-SP |
$143.19 | 10 in stock | |
300H-3-2-145/435-113 |
$138.01 | 10 in stock | |
300H-3-2-145/435-113-SP |
$143.19 | 10 in stock | |
300H-3-2-300/2900-110 |
$138.01 | 10 in stock | |
300H-3-2-300/2900-110-SP |
$143.19 | 10 in stock | |
300H-3-2-300/2900-112 |
$138.01 | 10 in stock | |
300H-3-2-300/2900-112-SP |
$143.19 | 10 in stock | |
300H-3-2-300/2900-113 |
$138.01 | 10 in stock | |
300H-3-2-300/2900-113-SP |
$143.19 | 10 in stock | |
300H-3-2-100/220-111 |
$138.01 | 9 in stock | |
300H-3-2-100/220-111-SP |
$143.19 | 9 in stock | |
300H-3-2-145/1160-111 |
$138.01 | 9 in stock | |
300H-3-2-145/1160-111-SP |
$143.19 | 9 in stock | |
300H-3-2-145/1750-111 |
$138.01 | 9 in stock | |
300H-3-2-145/1750-111-SP |
$143.19 | 9 in stock | |
300H-3-2-145/2320-111 |
$138.01 | 9 in stock | |
300H-3-2-145/2320-111-SP |
$143.19 | 9 in stock | |
300H-3-2-145/435-111 |
$138.01 | 9 in stock | |
300H-3-2-145/435-111-SP |
$143.19 | 9 in stock | |
300H-3-2-300/2900-111 |
$138.01 | 9 in stock | |
300H-3-2-300/2900-111-SP |
$143.19 | 9 in stock | |
300H-3-2-145/1160-8 |
$94.65 | 3 in stock | |
300H-3-2-145/1160-8-SP |
$99.83 | 3 in stock |
Interested in Other Part Numbers?
Other part numbers are available to order but are not currently in stock. Current availability for non-stock parts is "Call for availability". Click here to select options
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