The NEO-DYN 232P44CC6HR is a heavy-duty, industrial-grade adjustable pressure switch designed for high-pressure hydraulic and pneumatic systems. Its core function is to monitor system pressure and open or close an electrical circuit at a user-defined setpoint, enabling control, safety shutdowns, or alarm functions.
Decoding the Model Number: 232P44CC6HR
NEO-DYN model numbers are highly descriptive:
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232: Series identifier for a specific switch design and housing.
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P: Piston actuator type. This is key—it uses a piston sealed with an O-ring, making it ideal for systems with little or no pressure pulsation (like hydraulic systems) and compatible with a wide range of media, including hydraulic oil.
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44: Adjustable pressure range setting. The operator can set the trip point within a specified band.
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C: Electrical rating code (first C) – indicates the specific switch configuration and electrical capacity.
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C: Contact arrangement (second C) – Typically stands for SPDT (Single Pole Double Throw), also known as a “changeover” switch. This provides a common (C), normally open (NO), and normally closed (NC) terminal, offering wiring flexibility.
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6: Electrical Connection – A 1/2″ NPT conduit hub for sealed wiring entry.
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H: High Proof Pressure – The housing and mechanism are rated to withstand pressures significantly above the adjustable range without damage.
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R: External Adjuster – Features a clearly marked dial or knob with a scale, allowing for easy adjustment of the setpoint without opening the switch enclosure.
Key Specifications & Features
| Feature | Specification | Explanation / Implication |
|---|---|---|
| Adjustable Range | 2800 to 6000 PSIG | The switch’s trip point can be set anywhere within this range. It is not adjustable from 0 PSI. |
| Actuator Type | Piston (P) | Robust, suited for static or slow-cycling pressures. Compatible with most industrial fluids (oil, water, air). Requires a clean, lubricated medium for long life. |
| Electrical Rating | AC/DC 125/250/2 | 125V AC / 250V AC / 2 Amps DC. This is a low-power, pilot-duty switch. It is designed to control relays, solenoid coils, PLC inputs, or small indicator lights. It must NOT be used to directly switch large motors or high-current loads. |
| Switch Action | SPDT (Single Pole Double Throw) | One common terminal can be connected to either a normally open (NO) or normally closed (NC) circuit. Provides maximum control flexibility. |
| Electrical Connection | 1/2″ NPT Conduit Hub (6) | Standard industrial connection for running wiring conduit directly to the switch for environmental protection. |
| Pressure Connection | Typically 1/4″ NPT Female (Verify with datasheet) | Standard port size for connecting to the pressure system via a pipe fitting. |
| Housing | Likely Die-cast Aluminum or Stainless Steel | Provides durability and environmental protection. The “H” indicates a high-pressure housing design. |
| Adjustment | External Dial with Scale (R) | Allows for tool-free, visual adjustment of the setpoint. Includes a locking feature to prevent accidental movement. |
| Proof Pressure | High (Specific value per datasheet) | Can withstand overpressure excursions (e.g., system spikes) without catastrophic failure. |
| Operating Temp | Standard Industrial Range | Typically -20°F to 180°F (-29°C to 82°C) or similar. |
Functional Description
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Setting: The desired activation pressure (setpoint) is selected using the external dial within the 2800-6000 PSI range.
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Sensing: System pressure acts on the internal piston.
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Actuation: When system pressure reaches the setpoint, the piston moves, mechanically actuating the SPDT electrical micro-switch inside the sealed housing.
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Switching: The electrical contacts inside snap from one state to another (e.g., from NC to NO, breaking one circuit and making another).
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Reset: The switch automatically resets when pressure falls below the setpoint (minus a small differential, which is a fixed characteristic of the switch).
Typical Applications
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Hydraulic Power Units: Controlling pump load/unload cycles.
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Press Machinery: Initiating a cycle or triggering a safety interlock at a specific pressure.
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High-Pressure Pumps: Providing high-limit shutdown or alarm functions.
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Industrial Compressors: As a high-pressure cutoff switch.
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Test Stands: Automating pressure-based sequences.
