United Electric Controls J21K-S150B Pressure Switch

Description:

The United Electric Controls J21K-S150B Pressure Switch is used in industrial pressure monitoring and control systems to provide automatic electrical switching when preset pressure levels are reached. Commonly installed in pumps, compressors, hydraulic systems, pneumatic equipment, process machinery, and industrial automation applications requiring reliable pressure monitoring and control. Maintenance teams and system integrators use this part for repair, retrofit, expansion, or replacement of existing pressure sensing and control systems.

Applications:

The United Electric Controls J21K-S150B Pressure Switch is commonly used in compressor control circuits, pump protection systems, hydraulic power units, pneumatic process equipment, pressure monitoring skids, and industrial alarm applications. The switch utilizes a stainless steel bellows sensing element to detect pressure changes and actuate electrical contacts for alarms, interlocks, shutdown functions, and automatic process control, helping maintain safe and efficient operation of critical industrial equipment in demanding industrial environments.

Technical Specifications:

• Brand: United Electric Controls
• Part Number: J21K-S150B
• Product Type: Pressure Switch
• Series: J21K Series
• Switch Type: Electromechanical Pressure Switch
• Function: Pressure Monitoring and Control
• Sensing Element: Stainless Steel Bellows
• Wetted Material: Stainless Steel
• Output Contacts: SPDT Snap-Action Switch
• Contact Rating: 15A @ 125/250/480 VAC
• Setpoint Adjustment: Adjustable Pressure Setpoint
• Deadband: Adjustable Differential
• Process Connection: 1/4 in. NPT Female Connection
• Connection Material: Stainless Steel
• Electrical Connection: Conduit Entry
• Enclosure Type: Industrial-Duty Housing
• Housing Material: Die-Cast Aluminum Construction
• Repeatability: High Accuracy Industrial Switching
• Suitable for Air, Gas, Oil, Water, Steam, and Compatible Process Fluids
• Designed for Alarm and Shutdown Applications
• Suitable for Corrosive Service Applications
• Compatible with Pumps, Compressors, Hydraulic Systems, and Process Equipment
• Intended for OEM Equipment and Replacement Installations
• Suitable for Maintenance, Retrofit, and Repair Projects
• Engineered for Continuous-Duty Industrial Service

Common Replacements:

• United Electric Controls J21K-357 Pressure Switch
• United Electric Controls J120-S152B Pressure Switch
• United Electric Controls H105-146 Pressure Switch