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Long Island’s Trusted Boating Supply Store for 85 Years – Quality Gear for Your Next Adventure! Shop Now and Save all Year Long.
Long Island’s Trusted Boating Supply Store – Quality Gear for Your Next Adventure! Shop Now and Save all Year Long.

Stewart Warner Hobbs Pressure Switch 4 PSI

SKU S/W76579
Availability :
2 in stock
Original price $87.99 - Original price $87.99
Original price
$87.99 - $87.99
Current price $87.99

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The perfect choice for those demanding pressure switch applications. Hobbs 5000 Series pressure switches incorporate direct-action blade contacts for reliable, consistent switching. The polyimide film diaphragm is compatible with a wide variety of fluids. Ideal for oil and air pressure applications where automotive-style switches won't hold up. Available in normally-open (NO) normally-closed (NC) and dual-circuit (D.C.) electrical contact settings. Note: Dual circuit switches contain one set of normally-open and one set of normally-closed contacts. The set point is determined by the NC circuit. The deadband between the two sets of contacts can range from 2.5 psi for 4 psi set point switches, to 23 psi for 60 psi set point switches.

Switches are designed for use with motor oils, hydraulic and transmission oils, jet fuels and other similar hydrocarbon media. They are not recommended for use with hot water, strong acids or high pH fluids. Suitability of application is the responsibility of the user. Do not install in areas of extreme heat or vibration. Avoid installing near exhaust manifolds, mufflers, open flames or other potential sources of media ignition. Always install by using wrench on hex base.

- Contacts: Silver Alloy, Gold-Plated
- Temperature Range: -40 degree F to +250 degree F (-40 degree C to +120 degree C)
- Operating Pressure: 150 psi for 4, 10 and 15 psi Set Points (250 psi for 60 psi Set Points)
- Burst Pressure: 750 psi for 4, 10 and 15 psi Set Points (1250 psi for 60 psi Set Points)
- Proof Pressure: 500 psi
- Electrical Ratings: Resistive -- 15 A @ 6 VDC, 8 A @ 12 VDC, 4 A @ 24 VDC; Inductive -- 1 A @ 120 VAC, 0.5 A @ 240 VAC

Brand: Stewart Warner

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WARNING: This product MAY expose you to chemicals, which are known to the State of California to cause cancer, birth defects and/or other reproductive harm. For more information go to

Backorder Policy: Occasionally, due to demand or supplier delays, some items may be temporarily out of stock or non-stock items. To ensure you can still get the products you need, you can order items even when they're out of stock. Our sales team will update you with the shipping lead time. Once back in stock, we promptly ship your item, and if your order includes both in-stock and backordered items, we may split the shipment. You can cancel your backorder before shipment, and request a refund to original payment method. For any inquiries, contact us at