303D10-12 CORNELL DUBILIER Relay

Review CORNELL DUBILIER Relay New Surplus Really Old Stock

The Cornell Dubilier Electronics 303D10-12 is a heavy-duty, solid-state, mercury-free, and contactless relay. This relay is designed to provide reliable and long-lasting performance in various industrial applications.

The 303D10-12 relay features a compact size of 1.56 inches by 2.04 inches by 0.81 inches (39.6 mm by 51.8 mm by 20.5 mm), making it suitable for space-constrained environments. It has a 10 ampere contact rating, allowing it to handle moderate current loads, and a 12 volt coil voltage.

This relay operates on a solid-state principle, which means it does not contain any moving parts, unlike traditional electromechanical relays. This eliminates the need for contact bounce elimination circuits and reduces the risk of wear and tear, resulting in a longer lifespan and increased reliability.

The 303D10-12 relay also features a contactless design, which eliminates the possibility of arcing and sparking, making it an excellent choice for applications where electrical interference must be minimized. It has a high contact resistance of 50 milliohms to ensure low power consumption and long contact life.

The relay's coil has a maximum power dissipation of 3 watts, and it is designed to operate at a temperature range of -40 degrees Celsius to 85 degrees Celsius. It also has over-voltage and over-current protection, which helps to prevent damage to the relay in case of power surges or overloads.

The Cornell Dubilier Electronics 303D10-12 relay is RoHS compliant and has a UL recognized component recognition for UL508A and UL61850-2-20. It is also available in various other configurations, including different contact configurations, coil voltage ratings, and contact ratings.

Overall, the 303D10-12 relay is a reliable and robust solution for industrial applications where reliable switching is required. Its solid-state design, contactless operation, and long contact life make it an excellent choice for applications where electrical interference must be minimized or where reliability is critical.

The Cornell Dubilier 303D10-12 relay is a commonly used electromechanical switching device with several key features. In this response, I will discuss the pros and cons of buying this relay, ending with a conclusion and recommendation.

1. High Reliability: The Cornell Dubilier 303D10-12 relay is known for its high reliability due to its gold-contact design. This feature makes it suitable for applications that require long-term, stable switching performance.

2. Wide Operating Temperature Range: This relay can operate in temperatures ranging from -40 C to 85 C, making it ideal for use in various industrial environments.

3. Robust Design: The 303D10-12 relay is mechanically robust, with a sealed design that protects against dust and moisture intrusion. This makes it suitable for use in harsh environments.

4. Low Coil Resistance: With a coil resistance of 35 Ohms, the Cornell Dubilier 303D10-12 relay offers fast switching times and low power consumption.

1. Size and Weight: Compared to solid-state relays or other miniature electromechanical relays, the Cornell Dubilier 303D10-12 relay is relatively large and heavy, which may limit its suitability for space-constrained applications.

2. Cost: Due to its high-quality components and robust design, the Cornell Dubilier 303D10-12 relay is more expensive than some other electromechanical relays on the market.

3. Limited Switching Capacity: This relay is not suitable for applications requiring high switching capacity, as it can only handle up to 10 amperes of current and 250 volts of voltage.

The Cornell Dubilier 303D10-12 relay is a reliable and robust electromechanical switching device, suitable for applications requiring long-term, stable switching performance in harsh environments. Its wide operating temperature range, fast switching times, and gold-contact design make it an attractive option for many industrial applications. However, its relatively large size, higher cost, and limited switching capacity may make it less suitable for certain applications where space, cost, or switching capacity are primary considerations.

If your application requires long-term, stable switching performance in a harsh environment and you have the space and budget for a larger relay, the Cornell Dubilier 303D10-12 relay is a solid choice. However, if you're looking for a smaller, more cost-effective solution, you may want to consider other options, such as solid-state relays or miniature electromechanical relays with lower switching capacity. Always consider the specific requirements of your application before making a purchasing decision.

Details:

specifications genpurrelays:

• brand: Cornell Dubilier
• mpn: 303d10-12

general genpurrelays:

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

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offer genpurrelays:

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