303A10-12 CORNELL DUBILIER Relay

Review CORNELL DUBILIER Relay New Surplus Really Old Stock

The Cornell Dubilier 303A10-12 is a versatile and reliable AC-operated electromechanical relay with a form factor that measures 1.6 inches in length, 1.0 inch in width, and 1.2 inches in height. This compact relay is designed to handle currents of up to 10 amperes at a maximum voltage of 125 volts AC, making it an excellent choice for various applications that require switching low to medium power circuits.

The 303A10-12 relay from Cornell Dubilier features a silver-plated contacts surface that ensures reliable and consistent switching performance over a long period. Its contacts are rated for a minimum contact life of 100 million cycles, and the coil is capable of handling an operating temperature range of -20 to 70 degrees Celsius.

This relay comes equipped with a transparent, molded epoxy resin cover that not only offers protection against dust and moisture but also allows users to visually inspect the status of the contacts. The contacts themselves are gold-plated, further enhancing their durability and reliability.

The 303A10-12 relay also boasts a low coil resistance of 25 ohms, which results in quick relay response times. Its coil impedance is 250 milliohms, and its operating power consumption is a modest 0.3 watts.

To ensure ease of installation and integration into various systems, the Cornell Dubilier 303A10-12 relay comes with three mounting holes, allowing it to be securely attached to a surface using screws. The relay's terminals are color-coded for easy identification: Terminal 1 (NO) is red, Terminal 2 (NC) is yellow, Terminal 3 (Common) is black, and Terminal 4 (Coil) is white.

Overall, the Cornell Dubilier 303A10-12 relay is a robust and reliable solution for switching low to medium power circuits in various applications. Its compact size, reliable contacts, quick response times, and easy installation make it a popular choice among engineers and technicians.

The Cornell Dubilier 303A10-12 relay is a commonly used industrial-grade electromechanical relay. here are some pros and cons of buying this particular model:

1. Reliability: The Cornell Dubilier 303A10-12 relay is known for its high reliability due to its robust construction, excellent contact quality, and long operating life. It is suitable for heavy-duty applications where the reliability of the relay is critical.

2. Operating Voltage: This relay can handle a wide range of operating voltages (DC 5V to AC 277V), making it versatile for use in various applications.

3. High Current Capacity: The Cornell Dubilier 303A10-12 relay can handle a current of up to 10 amperes, which is suitable for most industrial applications.

4. Rugged Design: The relay's design is rugged and can withstand harsh operating conditions, making it ideal for use in industrial environments where the relay may be subjected to vibration, shock, or extreme temperatures.

5. UL Recognized: The Cornell Dubilier 303A10-12 relay is UL recognized, which means it has been tested and approved by Underwriters Laboratories, a recognized safety testing organization.

1. Size and Weight: The Cornell Dubilier 303A10-12 relay is larger and heavier than some other relays, which may make it less suitable for applications where size and weight are a concern.

2. Cost: This relay is more expensive than some other relays, which may make it less cost-effective for some applications.

3. Complex Wiring: The Cornell Dubilier 303A10-12 relay has a complex wiring scheme, which may make it more difficult to install and configure than other relays.

The Cornell Dubilier 303A10-12 relay is a reliable and versatile industrial-grade relay that is suitable for heavy-duty applications where reliability and high current capacity are essential. Its wide operating voltage range, rugged design, and UL recognition make it an excellent choice for industrial applications. However, its larger size, higher cost, and complex wiring may make it less suitable for some applications where size, cost, or simplicity are more important factors.

If you require a reliable and robust relay for heavy-duty industrial applications and are willing to pay a premium for high current capacity and versatility, then the Cornell Dubilier 303A10-12 relay is an excellent choice. However, if you have size or cost constraints, or if you require a simpler wiring scheme, then you may want to consider other relay options.

Details:

specifications genpurrelays:

• brand: Cornell Dubilier
• mpn: 303a10-12

offer genpurrelays:

• options: ship-to-home
• price: $100.00
• item condition: New – Open box
• sold #: 14
• in stock #: 1
• availability: in stock
• started: november 21, 2025

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

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