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CONVERTER,DC 300612-00133
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Product Overview
This heavy-duty DC-DC converter steps down a 24V DC electrical system to a regulated 12V DC output, supplying power to 12V accessories and control circuits on diesel-powered heavy equipment. It is designed for continuous duty in the electrical box or cabin area, where vibration, temperature cycling, and voltage transients from the alternator and starter circuit place sustained demands on power-conversion components.
The converter is a direct-fit electrical part for machines that use this reference number, serving as a service replacement for the original unit.
Technical Specifications
Parameter Specification Part Number 300612-00133 Component Type DC-DC step-down converter Input Voltage 24V DC nominal Output Voltage 12V DC regulated Application Environment Heavy-duty / continuous duty, electrical box or cabin installation Mounting Direct replacement for the original converter position Construction Sealed solid-state assembly, vibration-resistant Exact input tolerance, output current rating, and connector configuration are determined by the original unit this part replaces. Confirm against the machine electrical schematic before installation.
Compatibility
This converter is an electrical component listed in the cabin and electrical box assemblies of heavy equipment. Similar converter reference numbers in this series are used across DX-series crawler and wheeled excavators and related models in the same platform family.
Because electrical part numbers within this series share a common prefix but differ in output configuration, fitment should be confirmed by the part number on the existing unit, not by machine model alone. Check the label or stamping on the failed converter before ordering.
FAQ
Q: Is this a genuine part?
A: Yes. This is a genuine replacement part manufactured to the corresponding specification for this reference number.
Q: What does this converter do?
A: It converts 24V DC from the machine’s electrical system to a regulated 12V DC output, powering 12V accessories and control circuits that cannot operate directly on 24V.
Q: How do I know if this is the correct converter for my machine?
A: Match the part number on the existing converter. Do not rely on machine model alone—converters in this series can differ in output current and connector type even when the prefix is shared.
Q: Can it be used as a direct replacement without modification?
A: Yes, provided the mounting position and connector match the original unit. It is designed to replace the original converter in the same location.
Q: What causes a DC converter to fail?
A: Common causes include sustained overcurrent from a shorted accessory circuit, voltage spikes from the alternator or starter, corrosion at the connector terminals, and thermal stress from prolonged operation in a high-temperature electrical box. Before replacing the converter, inspect the output circuit for shorts to avoid repeat failure.
Q: Does it require any special installation procedure?
A: Disconnect the battery before replacement. Reconnect the input and output connectors in the original orientation, and verify output voltage with a multimeter before reconnecting the 12V loads.
Part numbers and model references are used for identification and fitment reference only.
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