280K1009 MOTOROLA Relay Starter Motor

Review MOTOROLA Vintage Relay 12v Heavy Duty Starter/motor

The Motorola 280K1009 Relay 8780-1 is a robust and reliable 12V starter relay designed for automotive applications. This heavy-duty relay is engineered to handle the high current and voltage requirements of a vehicle's starter motor.

The relay features eight contacts, with two normally open (NO) contacts and six normally closed (NC) contacts. The NO contacts are used to connect the starter motor to the battery when the key is turned, while the NC contacts are used to disconnect various systems, such as the fuel pump and ignition system, to prevent damage during starting.

The Motorola 280K1009 Relay 8780-1 is built with a gold-plated contact surface to ensure a reliable and corrosion-resistant connection. It also has a rated contact capacity of 30A at 12V, which is more than sufficient to handle the demands of most starter motors.

This relay is designed to operate at a temperature range of -40 C to 85 C, making it suitable for use in various climates and environments. It also has a low coil resistance of 1.2 ohms, which helps to minimize power loss and improve starting performance.

The Motorola 280K1009 Relay 8780-1 is housed in a rugged and durable plastic casing that is resistant to vibration and moisture. It measures 58.5mm x 31.5mm x 25.5mm and weighs just 115g. The relay is easy to install, with clear labeling on the contacts and a mounting hole for secure attachment to the vehicle's chassis or firewall.

In summary, the Motorola 280K1009 Relay 8780-1 is a high-quality and dependable 12V starter relay that is ideal for automotive applications. Its robust design, gold-plated contacts, and wide temperature range make it a reliable choice for ensuring reliable and efficient starting performance in various driving conditions.

Pros and Cons of Buying Motorola 280K1009 Relay 8780-1 for 12V Starter/Motor

a. Robust Design: Motorola 280K1009 is known for its durable construction, making it an ideal choice for heavy-duty applications like starter motors and generators.

b. High Reliability: This relay has a long life expectancy due to its high-quality components and solid contacts, reducing the need for frequent replacements.

c. Easy Installation: With a compact size and clear markings, the Motorola 280K1009 relay is simple to install and integrate into various systems.

d. Versatile Applications: The relay can be used in various applications, including industrial automation, HVAC systems, and marine applications.

a. Cost: Compared to some other relays in the market, the Motorola 280K1009 can be relatively expensive, which may deter some buyers on a tight budget.

b. Limited Coil Voltage Range: The relay is designed for a 12V coil voltage, which might not be suitable for all applications requiring different coil voltages.

The Motorola 280K1009 relay 8780-1 is a robust and reliable option for powering 12V starter motors and other heavy-duty applications. Its ease of installation, versatility, and long life expectancy make it an attractive choice for professionals and industrial users. However, its relatively high cost and limited coil voltage range should be considered before making a purchase.

Based on the pros and cons, the Motorola 280K1009 relay is recommended for those seeking a high-quality, long-lasting solution for powering heavy-duty starter motors and other applications where reliability is critical. If the cost is a concern, or if a different coil voltage is required, it may be worth exploring other options in the market.

Details:

These are from a long time collector who used and saved thousands of components during his career. Appears like new, has been stored away for years. Please see photos for more details.

specifications genpurrelays:

• brand: Motorola
• mpn: 280k1009
• part type: Starter Motor

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• policy: no returns

general genpurrelays:

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

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• availability: in stock
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• sold #: 18
• started: june 22, 2025
• in stock #: 1
• price: $35.00
• item condition: Used

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