Turck NI20-K40SR-VP4X2 Inductive Proximity Switch

Description:

The TURCK NI20-K40SR-VP4X2 Proximity Switch is used in industrial automation and machine control systems to provide non-contact detection of metallic objects using a complementary PNP output configuration and extended sensing distance technology. Commonly installed in conveyor systems, material handling equipment, packaging machinery, steel processing lines, and automated production systems requiring long-range metal detection and reliable position feedback. Maintenance teams and system integrators use this part for sensor replacement, machine retrofits, automation upgrades, and OEM equipment repairs.

Applications:

The TURCK NI20-K40SR-VP4X2 is designed for demanding industrial proximity sensing applications where long sensing distances and reliable operation in harsh environments are required. It is frequently used in pallet conveyors, transfer stations, machine tools, heavy manufacturing equipment, and automated assembly lines where conventional barrel sensors cannot provide adequate sensing range. Its smooth Ø40 mm cylindrical housing and dual cable entry design simplify installation while the complementary PNP outputs provide flexible control integration.

Technical Specifications:

• Manufacturer: TURCK
• Model / Part Number: NI20-K40SR-VP4X2
• Product Type: Proximity Switch / Inductive Sensor
• Sensor Type: Non-embeddable Inductive Proximity Sensor
• Housing Style: Smooth Cylindrical Barrel
• Housing Diameter: Ø40 mm
• Housing Length: 90 mm
• Sensing Distance: 20 mm nominal
• Output Type: PNP transistor output
• Output Function: Complementary (NO + NC)
• Supply Voltage: 10-65 VDC
• Rated Load Current: 200 mA maximum
• Switching Frequency: 100 Hz
• Connection Type: Terminal chamber with axial and radial cable entries
• Mounting: Non-flush installation
• Housing Material: ABS plastic
• Protection Rating: IP67
• Operating Temperature: -25°C to +70°C
• Status Indicators: Dual LED indicators
• Special Features: Two cable entries, short-circuit protection, reverse polarity protection, extended sensing distance
• Application: Metal object detection, machine positioning, and industrial automation control systems.

Common Replacements:

• TURCK NI20-CP40-VP4X2-B1141
• TURCK NI20-CK40-AP6X2-H1141
• TURCK BI20-CP40-VP4X2/S10