SKU: SENS-1644
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PS-3150 High-Speed Magnetic Reed Switch 220V 500mA - Normally Open Proximity Sensor

₹173.00 (Inclusive of all taxes)
Out of Stock

The PS-3150 is a high-speed, normally open magnetic reed switch designed for proximity sensing and switching applications up to 220V AC/DC and 500mA. It offers a compact, hermetically sealed design suitable for integration into industrial control systems, security devices, and automation projects.

Features

  • High-Speed Switching: Features a maximum operate/release time of 1.0 ms and a bounce time of 1.5 ms for responsive control.
  • Robust Electrical Ratings: Handles up to 220V AC/DC and 500mA maximum switching current with a 10W power rating.
  • Normally Open (NO) Configuration: The contacts close in the presence of a magnetic field, providing a simple on/off signal.
  • Compact & Sealed Construction: Hermetically sealed glass body protects the internal contacts from dust and corrosion.
  • Wide Magnetic Sensitivity Range: Operates within an AT10-30 range, with a specified release range of ATMin 5.

Out of stock

Description

The PS-3150 magnetic reed switch utilizes a pair of ferromagnetic reeds sealed within a glass envelope filled with inert gas. When a magnetic field of sufficient strength (within the AT10-30 range) is applied, the reeds magnetize and attract each other, closing the circuit. This contact closure provides a clean, bounce-minimized electrical signal ideal for digital input sensing.

Its hermetically sealed construction ensures long-term reliability in various environments, isolating the contacts from atmospheric contaminants. The switch is designed for high-speed operation with minimal contact bounce, making it suitable for counting, position detection, and safety interlock applications where fast, reliable switching is critical.

Key Features

  • High-Speed Performance: Fast 1.0 ms operate/release times enable rapid state detection.
  • Durable Hermetic Seal: Glass encapsulation protects internal contacts from oxidation and contamination.
  • Broad Voltage Compatibility: Supports switching for both AC and DC circuits up to 220V.
  • Low Contact Resistance: Initial maximum contact resistance of 200 mΩ ensures minimal voltage drop.
  • High Breakdown Voltage: Withstands up to 250V, providing a safety margin for transient events.
  • Optimized Form Factor: Compact 40mm length and lightweight design for easy integration.

Applications

  • Door and Window Security Sensors: Detection of open/closed states in alarm and access control systems.
  • Industrial Proximity & Position Sensing: Non-contact detection of machine parts, valves, or robotic end-effectors.
  • Liquid Level Detection: Used with float magnets in tanks for high/low level indication.
  • Revolution Counting & Speed Monitoring: Mounted near rotating shafts with embedded magnets for RPM measurement.
  • Safety Interlocks: Ensuring guards or covers are securely closed before machine operation.

Technical Specifications

ModelPS-3150
Switch TypeNormally Open (NO) Magnetic Reed
Max Switching Power10 W
Max Switching Voltage (DC/AC RMS)220V
Max Switching Current (DC/AC RMS)500 mA
Breakdown Voltage250V
Contact Resistance (Initial Max)200 mΩ
Operate/Release Time (Max)1.0 ms
Contact Bounce Time (Max)1.5 ms
Resonant Frequency (Typical)4000 Hz
Magnetic Operate Range (AT)10-30
Magnetic Release Range (ATmin)5
Contact Capacitance0.7 pF
Dimensions (L x W)40 mm x 40 mm
Weight10 g

Frequently Asked Questions

What is the maximum voltage and current this reed switch can handle?

The PS-3150 reed switch is rated for a maximum switching voltage of 220V AC or DC and a maximum switching current of 500mA AC or DC RMS. The maximum switching power is 10W. Exceeding these ratings may cause contact welding or failure.

How do I interface the PS-3150 reed switch with a microcontroller like Arduino?

Since this is a passive, normally open switch, you need to use a pull-up or pull-down resistor circuit. Connect one switch terminal to your microcontroller's digital input pin and the other terminal to ground (for a pull-up configuration) or VCC (for a pull-down). The pin will read LOW (or HIGH) when the magnet is absent and the opposite state when the magnet is present and the contacts close.

What does the AT10-30 magnetic sensitivity range mean?

The AT (Ampere-Turns) range indicates the magnetic field strength required to operate the switch. AT10-30 means the switch is guaranteed to close when the applied magnetic field is between 10 and 30 AT. A field weaker than AT10 may not close the contacts, while one stronger than AT30 is acceptable. The release point is specified at ATmin 5, meaning the contacts will open when the field strength drops below 5 AT.

Package Includes

  • 1 x PS-3150 High-Speed Magnetic Reed Switch

Additional Information

Weight 0.01 kg
Dimensions 4 × 4 cm