Many procurement teams check PSN40-20DN against Autonics Photoelectric Sensor, Contrinex Proximity Sensor and Autonics Tcn4 Series before signing purchase orders, verifying quality, compliance, and after-sales support availability.
Autonics PSN40-20DN Proximity Sensor
The Autonics PSN40-20DN Proximity Sensor operates on a DC 3-wire type 12β24VDC configuration, providing a 20mm sensing distance and sturdy 40mm frame size for dependable industrial detection. Manufactured by Autonics, it features a standard sensing target of 60Γ60Γ1mm (iron) and NPN Normally Open control output ensuring stable operation. Available under Autonics Proximity Sensors, this model includes a robust IP67 protection structure, maximum 10% hysteresis, and durable construction weighing approximately 135g. Part of the Autonics PS Series, it ensures long-lasting and precise sensing in harsh environments.

| Brand | Autonics |
| Product Type | Proximity Sensors |
| Model Number | PSN40-20DN |
Autonics PSN40-20DN Proximity Sensor β Technical Specifications
| Specification | Value |
|---|---|
| Wire type and power | DC 3-wire type 12-24VDC |
| Sensing side size | Frame size 40mm |
| Sensing distance | 20mm |
| Standard sensing target | 60Γ60Γ1mm(iron) |
| Response frequency | 100Hz |
| Current specification | Current consumption: Max. 10mA |
| Control output | NPN Normally Open |
| Sensing type | Standard type(front sensing type) |
| Material | Heat-resistant ABS |
| Protection structure | IP67 |
| Environment_Ambient temperature | -25 to 70β, storage: -30 to 80β |
| Environment_Ambient humidity | 35 to 95% RH, storage: 35 to 95% RH |
| Hysteresis(distance) | Max. 10% of sensing distance |
| Weight | β 135g (β225g) |
Autonics PSN40-20DN Rectangular Inductive Proximity Sensor is designed with a 40mm frame size and a 20mm sensing distance for reliable detection of iron targets. It operates on a DC 3-wire 12β24V system with an NPN Normally Open output, making it compatible with PLCs and automation controllers. The sensor maintains stable operation with a maximum current consumption of 10mA, residual voltage under 2V, and a response frequency of 100Hz, ensuring dependable results in dynamic environments. Built with heat-resistant ABS material and rated IP67, the PSN40-20DN resists dust, water, and harsh shopfloor conditions. It performs consistently in -25Β°C to +70Β°C environments, even under humidity up to 95% RH, delivering long-term stability in demanding factory setups.
The Autonics PSN40-20DN is widely applied in conveyors, packaging lines, stamping machines, and robotic systems where long-range sensing is critical. Its rectangular front-sensing design allows accurate detection in space-limited installations, reducing misalignment risks and ensuring continuous production flow. Engineers value this sensor for its reliable switching speed, easy wiring, and robust housing. Maintenance teams trust it to minimize downtime, while automation trainers use it to teach students about proximity sensing principles in real-world systems. By combining long-range accuracy, rugged construction, and simple integration, the PSN40-20DN provides lasting performance for OEM projects and factory upgrades.
The Autonics PSN40-20DN is a proven Rectangular Inductive Proximity Sensor trusted by industries needing precise 20mm detection. Buyers often search using terms like βPSN40-20DN,β βPSN40,β and β20DNβ when sourcing reliable proximity sensors for automation projects. Its IP67-rated design, 100Hz response frequency, and energy-efficient 10mA operation make it ideal for production environments requiring durability and accuracy. By combining Autonics engineering quality with versatile applications, the PSN40-20DN helps engineers, OEMs, and procurement teams achieve efficiency, cost savings, and stable long-term automation performance.







