Neodyn 125P NEMA 4 and 13 Pressure Switch - Tamper Proof

Description

Neodyn 125P NEMA 4 and 13 Pressure Switch stands out in the market due to its specific engineering for stability and precision. Unlike standard switches that may suffer from set point drift, the 125P utilizes a diaphragm sensor mechanism that works in harmony with the patented Nega-Rate® Belleville disc spring. This combination provides a snap-action response, resisting vibration and ensuring that the switch activates exactly when required.

Designed for versatility, this switch offers a selectable deadband ranging from 20 psig (1.38 bar) or 8%—whichever is greater—up to 45% of the set point. This makes it an ideal solution for systems where maintaining specific pressure differentials is critical to operational safety and efficiency.

The housing and construction meet NEMA 4 and 13 standards, providing protection against water ingress, dust, and oil coolants. Furthermore, the tamper-proof design ensures that once the set point is established, it cannot be accidentally altered, making it a preferred choice for safety-critical loops in industrial automation and fluid power systems.

Brand

Neodyn

ITT Neo-Dyn® is a leading manufacturer of high quality and reliable industrial switches. Our compact adjustable switches, pressure switches, hazardous area switches, vacuum switches, and temperature switches support a variety of applications throughout the world. Our legacy of competitively priced products and on time delivery, guarantee that you have the proven performance in the product that you need to support your specific requirements when you need it most. With a strong focus in the aerospace, general industrial, energy and chemical markets, we are your first choice for all of your switch product needs.

Specifications

Deadband (Differential): The deadband can be selected anywhere from 20 psig (1.38 bar) or 8% (whichever is greater) to 45% of the set point
Electrical: Snap action electrical switch recognized by Underwriters’ Laboratories, Inc. and CSA International
Electrical Connection: 1/2 NPT male conduit connection with PVC insulated 18 AWG leads 18″ long
Pressure Connection: 1/4 NPT Female
Temperature Range*:
- Ambient: -40°F to +180°F (-40°C to +82°C)
- Media: -40°F to +300°F (-40°C to +149°C)

*Temperature limits change with O-Ring selection

Shipping Weight: Approximately 10 ounces

Features

Utilizes a diaphragm sensor with Nega-Rate® Belleville disc spring for superior accuracy
Designed for high-pressure pneumatic and low-impulse hydraulic applications
Tamper-proof set point prevents unauthorized or accidental adjustments
Electrical switch recognized by Underwriters’ Laboratories, Inc. and CSA International
NEMA 4 and 13 enclosure rating suitable for washdown and oily environments