4CR-1-644 KLIXON Motor Starting Relay

Review KLIXON Motor Starting Relay 4cr1644

The Klixon 4CR-1-644 motor starting relay, also known as the 4CR1644 25P5R, is a heavy-duty, pneumatically operated contactor designed for use in industrial applications requiring reliable motor starting and control. This relay is manufactured by Klixon, a leading brand known for its high-quality electrical and pneumatic control solutions.

The 4CR-1-644 relay comes in a compact and rugged design, making it suitable for mounting in control panels or other tight spaces. It features four normally open (NO) contacts and one normally closed (NC) contact, each rated for a contact voltage of 250 volts AC and a contact current of 5 amperes. The relay is also capable of handling a maximum coil voltage of 125 volts DC and a coil current of 0.5 amperes.

The relay operates via a pneumatic signal, making it an ideal solution for applications where electrical connections are not practical or safe. It features a built-in pilot solenoid valve that allows for easy and precise control of the relay through compressed air. The pilot solenoid has a flow rate of 0.12 liters per minute (L/min) and a required air pressure of 6 bar (87 psi).

The 4CR-1-644 relay is constructed with high-quality components to ensure long-lasting performance in harsh industrial environments. It features a silver-plated contacts surface for superior conductivity and long contact life. The relay housing is made of die-cast aluminum, providing excellent heat dissipation and protection against impact and corrosion.

The relay is also designed with safety in mind, featuring a built-in overload protection mechanism that prevents the relay from being overloaded and potentially damaging the motor or other equipment. Additionally, the relay is certified to comply with various international safety standards, including UL, CSA, and CE.

In summary, the Klixon 4CR-1-644 motor starting relay is a versatile and robust solution for industrial applications requiring reliable motor starting and control through compressed air. Its compact design, heavy-duty construction, and built-in safety features make it an essential component for any industrial control system.

The Klixon 4CR-1-644 motor starting relay 4CR1644 25P5R is a type of contactor used for starting and controlling motors in various industrial applications. Here are some potential pros and cons of using this relay:

1. Robust Design: The Klixon 4CR-1-644 relay is built to withstand harsh industrial environments, making it suitable for heavy-duty applications.

2. Versatile: The relay can be used to start AC motors in a wide range of voltage and current applications.

3. Safe: The relay includes overload protection, which helps prevent motor damage and reduces the risk of electrical hazards.

4. Easy to Install: The relay comes with clear markings and a user-friendly design, making it easy to install and set up.

5. Durable: The relay is designed to last for a long time, reducing the need for frequent replacements.

1. Cost: The Klixon 4CR-1-644 relay is more expensive than some other types of motor starting relays on the market.

2. Size: The relay is larger than some other options, which can make it less suitable for applications with limited space.

3. Complexity: The relay may require more complex wiring and setup compared to simpler options.

4. Maintenance: The relay may require occasional maintenance to ensure optimal performance.

The Klixon 4CR-1-644 motor starting relay 4CR1644 25P5R is a robust and versatile option for industrial applications that require heavy-duty motor starting and control. While it may be more expensive and complex than some other options, its durability and safety features make it a worthwhile investment for many applications.

If you are looking for a reliable and safe motor starting relay for heavy-duty industrial applications, the Klixon 4CR-1-644 relay is an excellent choice. However, if cost and size are major concerns, you may want to consider other options that are more budget-friendly and compact. It is always recommended to consult with a qualified electrical engineer or technician to determine the best relay for your specific application.

Details:

Please refer to the photos. With the model number 4cr1644 25P5R, this motor starting relay is built to ensure secure and consistent operation of electrical machinery in various applications.

specifications genpurrelays:

• brand: Klixon
• mpn: 4cr-1-644
• type: Protection Relay

seller genpurrelays:

• rating: 99.3%
• # reviews: 4136
• city: garfield, new jersey

offer genpurrelays:

• options: ship-to-home
• started: march 24, 2025
• sold #: 22
• best offers: true
• availability: in stock
• in stock #: 5
• prices: $68.60–$97.07
• item condition:
  • New – Open box
  • New other (see details)
  • New

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• type: fixed
• class: standard
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• policy: returns accepted
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general genpurrelays:

• category: Business & Industrial > Electrical Equipment Supplies > General Purpose Relays