Overview
Allen-Bradley 836T-T351JX121X9 /A pressure controls are externally adjustable electromechanical pressure switches designed to meet traditional requirements of the transportation and machine tool industries. Bulletin 836T Pressure Controls are designed to open or close electrical circuits in response to changes in pneumatic (air or gas) or hydraulic (oil or non-corrosive liquids) pressure. This model combines proven dependability with robust construction for rugged industrial environments.
Key Features
- Rated for 100 to 175 PSI of differential pressure and 140 to 1000 PSI of operating pressure
- Type 1, 4, and 13 enclosure with 2-circuit contact block
- Piston with seal design means hydraulic fluid return line to the system’s fluid reservoir is not required when used in a hydraulic system
- Single-pole, double-throw contact blocks can be wired to open or close on increasing or decreasing pressures
- Allen-Bradley controls are designed for ease of setting to help minimize installation time, and the control can be set to the specific requirements for each application using a pressure gauge
- Externally adjustable trip and differential settings
Technical Specifications
- Operating Pressure Range: 140–1000 PSI
- Adjustable Differential Pressure: 100–175 PSI
- Maximum Occasional Surge Pressure: 10,000 PSI
- Contact Configuration: 2-circuit, single-pole double-throw (SPDT)
- Enclosure Types: NEMA 1, 4, and 13
- Actuator Type: Piston with seal
- Electrical Contact Type: Silver contacts with snap-action switches
Typical Applications
This controller can be used in hydraulic systems and pneumatic systems. Common applications include:
- Machine tool pressure monitoring and control
- Pneumatic system pressure regulation
- Hydraulic system overpressure protection
- Low-pressure detection and alarm circuits
- Transportation industry pressure control
Compatibility & Replacements
The 836T-T351JX121X9 /A is part of the Allen-Bradley 836T series of pressure controls and is compatible with standard industrial control systems requiring NEMA 1, 4, or 13 enclosures. Close variants include the 836T-T351JX9, 836T-T351J, and other T-style models within the 836/836T product family. Before substituting with alternative models, verify operating pressure range, differential requirements, contact block configuration, and enclosure type match your application specifications.
