836T-T252JX19 Allen Bradley

The Allen-Bradley 836T-T252JX19 is an industrial electromechanical pressure control switch, part of the Bulletin 836T series, which is known for its ruggedness and use in traditional machine tool applications.

📝 Allen-Bradley 836T-T252JX19 Product Details

• Product Type: Electromechanical Pressure Control Switch
• Series: Bulletin 836T (Traditional Machine Tool Pressure Controls)
• Style: T-Style Pressure Control (Features independently adjustable operating range and differential)
• Actuating Element: Copper Alloy Bellows (Suitable for use with water, air, and other liquids or gases not corrosive to copper alloy).
• Contact Block: S.P.D.T. (Single Pole Double Throw), 2-Circuit Contact Block (Standard configuration).
• Enclosure Type: NEMA Type 1, 4, and 13 Industrial Use (Provides protection against dust, light splashing of water, and oil/coolant).
• Wiring/Connection: Often includes a 5-Pin Mini-Type Receptacle with J1 wiring reference (The ‘X19’ in the catalog number often indicates a specific modification or factory wiring, such as a quick-disconnect connector).

⚙️ Product Parameters (Specifications)

⭐ Product Advantages

• Robust and Proven Design: The 836T series is a well-established product line known for its proven dependability and construction in demanding industrial environments.
• Flexible Control: Features independently adjustable operating range and differential, allowing for precise setting of the pressure ON and OFF points.
• Rugged Enclosure: The NEMA Type 4/13 rating offers excellent protection against industrial contaminants, making it suitable for wet and oily machine tool environments.
• Versatile Media: The Copper Alloy Bellows are a good choice for common industrial fluids like air, water, and non-corrosive oils.
• Quick Disconnect (X19 Modification): The ‘X19’ suffix often indicates a connector (like the 5-Pin Mini-Type Receptacle), which significantly reduces wiring time and simplifies maintenance/replacement.

⚠️ Precautions (Important Considerations)

• Media Compatibility: Ensure the monitored fluid or gas is non-corrosive to copper alloy. Using it with incompatible media can lead to failure of the bellows and switch.
• Pressure Limits: Do not exceed the Maximum Line Pressure ($200\text{ psi}$). Operating above this can damage the bellows and lead to catastrophic failure.
• Electrical Rating: Confirm the switch’s contact block voltage and current rating are appropriate for the control circuit being switched.
• Environment: While rated NEMA 4/13, ensure the environment does not exceed the maximum operating temperature or introduce highly specialized hazards not covered by the rating.
• Calibration/Setting: The operating range and differential must be properly calibrated and set according to the system requirements to ensure correct control and operation.

🏭 Product Applications

The Allen-Bradley 836T-T252JX19 is designed for general industrial use to control and detect pressure in various systems.

• Pneumatic Systems: Controlling air pressure in manufacturing equipment, maintaining preset pressures between two values.
• Hydraulic Systems: Used in low-to-medium pressure hydraulic circuits to monitor and control fluid pressure.
• Machine Tools: Ideal for traditional machine tool applications due to its ruggedness and NEMA 4/13 rating (resistance to cutting fluids/coolants).
• Pumps and Compressors: Starting and stopping motors to maintain pressure within a desired operating band in fluid or air supply systems.