I'm not familiar with "RCT-510" as a specific product, technology or standard. It's possible this could be:

1. A model number or part number for a specific device or component

2. An internal code or designation used by a particular company

3. A typo or variation of another similar acronym or term

Without more context about where you encountered this term or what field it might relate to (e.g. technology, manufacturing, research), I can't provide much specific information. If you have any additional details about the context in which you saw this, or what type of thing it might refer to, I'd be happy to try to help further based on that extra information.