Pepperl+Fuchs NJ20U4A2V1 Inductive Proximity Switch

Description:

The Pepperl+Fuchs NJ20-U4-A2-V1 Proximity Switch is used in industrial automation systems to provide non-contact detection of metallic objects for machine control, positioning, and presence sensing applications. Commonly installed in conveyors, packaging equipment, material handling systems, and manufacturing machinery requiring reliable object detection without physical contact. Maintenance teams and system integrators use this sensor for equipment repairs, automation upgrades, and replacement of mechanical limit switches in demanding industrial environments. The NJ20 series utilizes inductive sensing technology and features a large sensing range for heavy-duty industrial applications.

Applications:

The Pepperl+Fuchs NJ20-U4-A2-V1 proximity switch is commonly used in conveyor systems, automated production lines, machine tools, material handling equipment, and packaging machinery where reliable detection of metallic targets is required. Its long sensing distance and rugged housing make it suitable for industrial environments where larger target distances and robust sensor construction are necessary.

Technical Specifications:

• Manufacturer part number (MPN): NJ20-U4-A2-V1
• Alternate formatting: NJ20U4A2V1
• Manufacturer: Pepperl+Fuchs
• Product type: Inductive proximity switch
• Sensor type: Inductive proximity sensor
• Sensing distance: 20 mm nominal
• Mounting style: Non-flush (unshielded) installation
• Output type: PNP NO/NC selectable output
• Output configuration: 4-wire DC
• Supply voltage: 10 to 30 VDC
• Maximum load current: 200 mA
• Switching frequency: Up to 200 Hz
• Connection type: M12 x 1, 4-pin connector (V1)
• Housing style: Rectangular VariKont housing
• Housing material: PBT housing with metal base
• Protection rating: IP68
• Operating temperature range: -25°C to +70°C (-13°F to +158°F)
• LED status indication: Green power LED and yellow switching LED
• Reverse polarity protection: Yes
• Short-circuit protection: Yes
• Application: Metal object detection and machine positioning
• Certifications: UL, CSA, and CE approvals
• Service application: Repair and replacement component
• Country of origin: Germany typical for original production units.

Common Replacements:

• Pepperl+Fuchs NJ20-U1-A2-V1
• Pepperl+Fuchs NBB20-U1-A2-V1
• Turck BI20U-Q20 Series Proximity Sensor