Nema Pressure Switches

NEMA Pressure Switches – AGM Electrical Supplies

Need to control air pressure, water pumps, or compressors reliably? The Clipsal NEMA Pressure Switches are built for just that — tough, precise, and designed for industrial & trade-grade installations. At AGM Electrical Supplies, we stock high-quality electromechanical pressure switches that help you automatically turn equipment on/off when pressure reaches preset levels.

What Is a NEMA Pressure Switch?

A NEMA pressure switch is an electromechanical device that responds to fluid or air pressure. It uses snap-action contacts inside a NEMA-rated enclosure to open or close an electrical circuit when pressure rises or falls past set points (cut-in/cut-out). These switches are typically housed in NEMA 1 (indoor general purpose) or more durable styles, depending on the model. They serve tasks like controlling pump motors, maintaining safe air pressure in compressors, or activating alarms.

Key Features & Specifications

Here are some of the features you’ll see in the Clipsal NEMA Pressure Switch line, plus what to check when selecting one:

• Adjustable pressure range: Many models let you set rising-pressure limits (for example, 20-65 psi, 25-80 psi, or higher). You can tune where the switch should activate or deactivate.
• Differential/snap action: Some switches have fixed or adjustable deadband (difference between cut-in and cut-out). That ensures stable operation without “hunting” (rapid on/off cycling).
• Electrical rating & current capacity: Many NEMA switches are capable of switching motors (e.g. 1 HP), up to certain voltage levels (e.g. 575 VAC) and current ratings (often 10-20 A). Always match the switch rating to your load.
• Fluid/air compatibility: Designed for air, water, or light hydraulic fluids – check materials for diaphragms (e.g. nitrile, Buna-N) and seals so they resist corrosion or degradation.
• Enclosure / IP rating: Most are in NEMA-rated boxes (often NEMA 1 indoors), but there are heavy-duty or explosion-proof models for harsher environments. Choose the right one for your environment.

Why Choose AGM Electrical Supplies for NEMA Pressure Switches?

When you shop with AGM, you’re getting more than just a switch — you get reliability, support, and ease:

• We offer genuine Clipsal / Schneider Electric NEMA pressure switches so you’re getting real build quality.
• We list detailed specs like pressure ranges, enclosure ratings, and current capacity, so you can choose the right model the first time.
• Our delivery across Australia is fast and reliable, because delays in pressure control can cost you more.
• Perfect for tradies, service technicians, and machine builders — we help you pick based on application (pump control, air compressor, fluid system).

Where They’re Used & Tips for Application

These switches are often used:

• In air compressors to start/stop the motor automatically.
• In water pump control for tank pressure cut-off/cut-in,
• In heating or cooling systems for pressure protection,
• In industrial machinery where consistent pressure is critical.

Tip: Always check with the equipment manufacturer or engineering charts for the required set points (cut-in/cut-out), and make sure the switch’s max pressure rating is safely above your working pressure to avoid damage.

Ready to Order?

If you’re ready to get a Clipsal NEMA Pressure Switch, AGM Electrical Supplies has models with different ranges (low to high pressure), enclosure types, and contact forms. Explore our range online, compare specs, and if you have any doubts about which model suits your system, shoot us a message via SMS or WhatsApp — we're here to help you pick the right switch so your system works safely and reliably.

FAQs

What is a NEMA pressure switch used for?

A NEMA pressure switch is used to automatically control pumps, compressors, and other equipment by switching circuits on or off when pressure reaches a set level.

How do you adjust the cut-in and cut-out settings on a NEMA pressure switch?

Most models have adjustment screws inside the cover, allowing you to set the cut-in (start) and cut-out (stop) pressure ranges for your application.

What is the difference between NEMA 1 and NEMA 4 pressure switch enclosures?

NEMA 1 is for indoor general-purpose use, while NEMA 4 provides water-tight, weatherproof protection for outdoor or harsh environments.

Can a NEMA pressure switch be used for both air and water systems?

Yes, depending on the model. Many NEMA pressure switches are designed for air compressors and water pump systems, but you should always check compatibility.

How long does a NEMA pressure switch typically last?

With proper installation and maintenance, a quality NEMA pressure switch can last several years, often 5–10 years, depending on usage and environment.