The 22-year-old featured for Australia in last year's Tokyo Olympic Games.
He could feature for Stanley in their home game against Sunderland on Saturday.
Boss John Coleman told the club website: "He's a lad who's desperate to do well and he ticks all the boxes for what we want. He's hungry, physical, quick, athletic and he can play."
The club have not disclosed the length of contract Rich-Baghuelou has signed.
Need a VPN? Or seeking to switch? Then support Tribal Football by clicking here to sign up with our official partners NordVPN. Not only will you receive the best VPN experience, but also great discounts by signing up via Tribal Football. Thanks for your support!