Marine Starter Relay | 120270-77511/128990-77550 (YANMAR )

The Marine Starter Relay models 120270-77511 and 128990-77550 are components designed and manufactured by YANMAR, a well-established company that specializes in producing high-performance engines and related systems, particularly for marine, agricultural, and industrial applications.

Key Features of YANMAR Marine Starter Relay:



  1. Purpose:

    • These starter relays are specifically designed for marine engines, where reliability and durability are crucial for the safe and efficient operation of the engine, particularly in harsh marine environments.

    • They function as a high-power switching component that enables the starter motor to engage when the ignition key or button is turned.



  2. Compatibility:

    • These starter relays are tailored for use with YANMAR marine engines. Their specific design and specifications ensure they match the electrical requirements of YANMAR's engine starters and control systems.



  3. Durability:

    • Built to withstand the rigorous conditions in marine environments, these relays are designed for resilience against corrosion, vibration, and high humidity, all of which are common in marine applications.

    • Marine starter relays are robust, ensuring long-term reliability and performance, which is essential for engine starting operations.



  4. Electrical Specifications:

    • The relays can typically handle high-current loads necessary for engaging the starter motor in marine applications.

    • They are designed to function with 12V or 24V electrical systems commonly found in marine engines.



  5. Functionality:

    • The starter relay is an essential part of the engine starting system. When the ignition is activated, the relay receives the signal and provides the necessary connection to activate the starter motor, enabling the engine to start.

    • The relay isolates the starter circuit from the rest of the engine's electrical system, preventing overloading and ensuring proper functioning.




Applications:



  • Marine Engines: Specifically designed for YANMAR marine engines, which power a wide range of vessels, including yachts, fishing boats, and commercial ships.

  • Starter Motor Circuit: Used in the starter motor circuit to manage the high current needed for the motor to engage and start the engine.

  • Reliability: A vital component in ensuring that the engine starts reliably and consistently, particularly in marine environments where starting reliability is essential.


Benefits:



  • Marine-Grade Durability: Ensures that the starter relay works under demanding conditions found in marine environments, including exposure to saltwater, humidity, and temperature fluctuations.

  • High-Current Handling: The relay is capable of handling the high currents typically required to activate a starter motor, ensuring the engine starts with ease.

  • Trusted Brand: Being a YANMAR product, these relays are designed with precision and are trusted by boat owners, manufacturers, and service technicians for their dependability.


Considerations:



  • Correct Voltage: Ensure that the relay is the correct model for your marine electrical system (e.g., 12V or 24V), as using the wrong voltage could lead to malfunction or damage.

  • Installation: Proper installation is crucial to ensure that the relay functions as intended. It should be mounted securely in an area protected from the elements but easily accessible for maintenance.


If you're replacing or installing this starter relay, be sure to follow YANMAR's guidelines for installation and maintenance to avoid any issues with engine starting or reliability.https://store.unigulfsupply.com/product/yanmar-marine-starter-relay-120270-77511-128990-77550/

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