KZ3990

The Parker KZ3990 Reed Switch is a reliable and versatile sensing component designed for various applications where contact closure is required. This reed switch operates on the principle of a magnetic field, making it an excellent choice for sensing the presence or absence of magnetic objects.

The switch consists of two reed contacts housed in a hermetically sealed glass tube. When a magnetic object approaches the switch, it creates a magnetic field that attracts the contacts, closing the electrical circuit. Once the magnetic object is removed, the contacts return to their original position, opening the circuit. This mechanism ensures a quick and reliable response to the presence or absence of the magnetic object.

The Parker KZ3990 Reed Switch is available in both normally open (NO) and normally closed (NC) configurations. Normally open means that the circuit is open when no magnetic object is present, and it closes when the magnetic object is detected. Normally closed, on the other hand, means that the circuit is closed when no magnetic object is present, and it opens when the magnetic object is detected.

This reed switch is rated for a maximum operating voltage of 250V AC or DC and a maximum operating current of 2A. It can be used in temperatures ranging from -20 C to 60 C, making it suitable for a wide range of environments. The switch is also ruggedly constructed, with a durable glass tube and metal contacts, ensuring long-lasting performance.

The Parker KZ3990 Reed Switch is an ideal solution for various applications, including door sensors, level sensors, presence detectors, and magnetic limit switches. Its compact size, reliability, and quick response time make it a popular choice for automation, industrial, and home automation projects.

In summary, the Parker KZ3990 Reed Switch is a high-quality sensing component designed for reliable and quick detection of magnetic objects. Its rugged construction, versatile configurations, and wide operating temperature range make it a valuable addition to various applications where contact closure is required.

The Parker KZ3990 reed switch is a commonly used magnetic sensor in various applications such as industrial automation, HVAC systems, and security systems. Here are some pros and cons of buying this reed switch to help you make an informed decision:

1. Reliability: Reed switches are known for their reliability and durability. The Parker KZ3990 reed switch is designed to withstand harsh environments, making it suitable for industrial applications.

2. Easy to Use: Reed switches are simple to install and operate. They do not require any external power source and can be used in applications where power is not readily available.

3. Affordable: Reed switches are generally more affordable than other types of sensors, making them a cost-effective option for many applications.

4. Long Life Span: Reed switches have a long life span, and the Parker KZ3990 reed switch is no exception. It is rated for over 5 million cycles, ensuring that it will last for a long time.

1. Limited Sensitivity: Reed switches have a limited sensitivity compared to other types of sensors. They can only detect when a magnetic field is present or not, and they cannot measure the strength of the magnetic field.

2. Limited Operating Temperature: Reed switches have a limited operating temperature range. They should not be used in applications where the temperature exceeds 65 C or drops below -20 C.

3. Fragile Reed Contacts: The reed contacts in a reed switch are fragile and can be damaged if subjected to shock or vibration.

4. Limited Operating Frequency: Reed switches have a limited operating frequency, and the Parker KZ3990 reed switch is no exception. It is recommended that the operating frequency does not exceed 1 kHz to ensure reliable operation.

The Parker KZ3990 reed switch is a reliable, affordable, and easy-to-use sensor that is suitable for applications where a simple on/off switch is required. Its long life span makes it a cost-effective option for industrial applications. However, it has some limitations such as limited sensitivity, operating temperature range, and operating frequency. If your application requires higher sensitivity, a wider operating temperature range, or a higher operating frequency, then a different type of sensor may be more suitable.

If you are looking for a simple and affordable on/off switch for your application, then the Parker KZ3990 reed switch is a good option. However, if your application requires higher sensitivity, a wider operating temperature range, or a higher operating frequency, then you may want to consider other types of sensors such as Hall effect sensors or magnetic proximity sensors.

Details:

Model number:kz3990. Safety and security. Check valves. Solenoid valves.

Valve bodies and manifolds. Solenoid coils. Shock absorbs. Pressure regulator valves.

specifications indusswitch:

• brand: Parker
• mpn: Kz3990
• part type: Switch
• reference sku: 1628884
• product condition: New Other

seller indusswitch:

• rating: 99.9%
• city: delta, ohio
• # reviews: 113326

general indusswitch:

• category: Business & Industrial > Electrical Equipment Supplies > Switches > Accessories

returns indusswitch:

• policy: returns accepted
• paid by: seller
• time: 30 days
• method: money back

shipping indusswitch:

• class: standard, expedited, one-day
• transit: 6-6 days
• type: fixed
• service: standard, expedited, overnight

payments indusswitch:

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• wallet: apple-pay
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offer indusswitch:

• in stock #: 5
• sold #: 19
• prices: $64.99–$96.50
• item condition:
  • New – Open box
  • New
• best offers: true
• availability: in stock
• options: ship-to-home
• started: april 2, 2025

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