United Electric Controls J402K-455 Pressure Switch 5-80 WCD 12.4-199.1 mbar

Description:

The United Electric Controls J402K-455 Pressure Switch is used in low-pressure industrial process control, HVAC systems, filtration equipment, ventilation systems, and airflow monitoring applications to detect pressure changes and provide automatic electrical switching when preset pressure conditions are reached. Commonly installed in air handling units, clean rooms, dust collection systems, filter monitoring assemblies, and industrial automation equipment requiring accurate low-pressure monitoring. 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 J402K-455 Pressure Switch is commonly used in airflow proving systems, filter differential monitoring, ventilation control circuits, HVAC equipment, clean room pressure management, and industrial process installations. The switch converts low-pressure changes into electrical switching actions for alarms, shutdown functions, maintenance indication, and automatic equipment control, helping maintain safe and efficient operation of critical air handling and filtration systems.

Technical Specifications:

• Brand: United Electric Controls
• Part Number: J402K-455
• Product Type: Pressure Switch
• Series: J402K Series
• Switch Type: Low-Pressure Differential Pressure Switch
• Pressure Range: 5 to 80 in. WCD (Water Column Differential)
• Pressure Range Metric: 12.4 to 199.1 mbar
• Function: Pressure Monitoring and Control
• Pressure Sensing Element: Diaphragm Actuated Mechanism
• Output Contacts: Dual SPDT Snap-Action Switches
• Electrical Rating: 15A @ 125/250/480 VAC Resistive
• Setpoint Adjustment: External Reference Dial
• Repeatability: Industrial Process Control Accuracy
• Enclosure Type: NEMA 4X Weatherproof Housing
• Housing Material: Epoxy-Coated Die-Cast Aluminum
• Pressure Connections: High and Low Pressure Ports
• Suitable for Air and Compatible Non-Corrosive Gases
• Designed for Alarm and Shutdown Applications
• Compatible with HVAC, Filtration, and Ventilation 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 J402-442 Pressure Switch
• United Electric Controls J21KX-S150 Differential Pressure Switch
• United Electric Controls J21KX-140 Differential Pressure Switch