Proximity switches and sensors use a reed switch and a permanent magnet. Each is encased in a plastic housing for protection and ease of mounting. A classic use is sensing the opening of a door in a security system. A reed switch in the jamb and a permanent magnet in the door complete a circuit when the door is closed. Opening the door breaks the circuit.

Proximity switches can be achieved using a number of different technologies depending on the application. Use the contact information button to request help with choosing the right proximity switch for you application.

Application information

NPN - PNP circuit

Serial Number	Details	Product	PDF
MPS4102SN	Contact Resistance: 80 ohms Switching Voltage: 230 Vac Switching Current: 3A Switching Distance: 5mm Size: Length: 82.0mm (3.23in) Diameter: M10 Thread Normally Open Switch
MPS4415SN	Contact Resistance: 200 mOhms Switching Voltage: 220 Vac Switching Current: 0.80A Switching Distance: 10mm Size: Length: 32.5mm (1.28in) Height: 18.0mm (0.7in) Normally Open Switch
MPS4431SN	Contact Resistance: 300 mOhms Switching Voltage: 250 Vac Switching Current: 3A Switching Distance: Application Dependant Size: Length: 75.0mm (2.95in) Diameter: 8.0mm (.32in) Normally Open Switch
MPS4432SN	Contact Resistance: 200 mOhms Switching Voltage: 220 Vac Switching Current: 0.80A Switching Distance: 10mm Size: Length: 40.0mm (1.57in) Diameter: 8.0mm (.32in) Normally Open Switch
MPS4432U	Contact Resistance: 200 mOhms Switching Voltage: 30 Vac Switching Current: 0.20A Switching Distance: 10mm Size: Length: 30.0mm (1.18in) Diameter: 8.0mm (.32in) Changeover Switch
PRA 100/30	Switching Voltage: 100 Vac Switching Current: 0.25A Switching Capacity: 5.0VA Max. Contact Resistance: 200 mOhms Max. Switching Distance: 3mm Min. Size: Length: 1.102in (28.0mm) Diameter: 0.236in (6.0mm) Leadwire Length: 11.81in (300.0mm) Normally Open Switch
PRA 240/30	Switching Voltage: 240 Vac Switching Current: 0.5A Switching Capacity: 10.0VA Max. Contact Resistance: 150 mOhms Max. Switching Distance: 3mm Min. Size: Length: 1.102in (28.0mm) Diameter: 0.236in (6.0mm) Leadwire Length: 11.81in (300.0mm) Normally Open Switch
PRA 30/10	Contact Resistance: 500 m'ohms Max Switching Voltage: 30 Vac Switching Current: 0.01A Switching Distance: 3.0mm Min
PRB 130/30 Order	Contact Form/Style: B/Normally Closed Switching Voltage: 130 Vac Max. Switching Current: 0.25A Switching Distance: 3.0mm Min Size: Length: 28.0mm (1.102in) Diameter: 6.0mm (.236in)
PRC 175/30	Switching Voltage: 175 Vac Switching Current: 0.25A Switching Capacity: 3.0VA Max. Contact Resistance: 150 mOhms Max. Switching Distance: 3mm Min. Size: Length: 1.102in (28.0mm) Diameter: 0.236in (6.0mm) Leadwire Length: 11.81in (300.0mm) Changeover
PTA 1500/30	Contact Resistance: 80 m'ohms Max Switching Voltage: 1500 Vac Switching Current: 3.0A Switching Distance: 15.0mm Min Size: Length: 90.0mm (3.543in) Diameter: M18 Thread
PTA 230/30	Contact Resistance: 80 m'ohms Max Switching Voltage: 230 Vac Switching Current: 3.0A Switching Distance: 8.0mm Min Size: Length: 50.0mm (1.968in) Diameter: M12 Thread
PTA 470/30	Contact Resistance: 150 m'ohms Max Switching Voltage: 470 Vac Switching Current: 0.50A Switching Distance: 3.0mm Min Size: Length: 28.0mm (1.102in) Diameter: M6 Thread
PTAP 470/30	Switching Voltage: 470 Vac Switching Current: 0.5A Switching Capacity: 10.0VA Max. Contact Resistance: 150 mOhms Max. Switching Distance: 3mm Min. Size: Length: 1.102in (28.0mm) Diameter: M6 Thread Leadwire Length: 11.81in (300.0mm) Normally Open Switch
PTB 130/30	Contact Form/Style: B/Normally Closed Switching Voltage: 130 Vac Max. Switching Current: 0.25A Max. Contact Resistance: 150 mOhms Switching Distance: 3.0mm Min. Size: Length: 28.0mm (1.102in) Diameter: M6 thread
PTBP 130/30	Contact Form/Style: B/Normally Closed Switching Voltage: 130 Vac Max. Switching Current: 0.25A Max. Contact Resistance: 150 mOhms Max. Switching Distance: 3.0 mm Min. Size: Length: 28.0 mm (1.102in) Diameter: M6 thread
PTC 130/30	Contact Form/Style: C/Changeover Switching Voltage: 130Vac Switching Current: 0.25A Max. Contact Resistance: 150 mOhms Max. Switching Distance: 3.0mm Min. Size: Length: 28.0mm (1.102in) Diameter: M6 thread
PTCP 130/30	Switching Voltage: 130 Vac Switching Current: 0.25A Switching Capacity: 3.0VA Max. Contact Resistance: 150 mOhms Max. Switching Distance: 3mm Min. Size: Length: 1.102in (28.0mm) Diameter: M6 Thread Leadwire Length: 11.81in (300.0mm) Changeover
S1372	Switching Voltage: 140 Vac Switching Current: 0.5A Switching Capacity: 10VA Max. Contact Resistance: 115 mOhms Max. Switching Distance: 3mm Min. Size: Length: 0.709in (18.0mm) Diameter: 0.138in (3.5mm) Leadwire Length: 3.54in (90.0mm) Normally Open Switch