This project contains a translator from TLA+ to B for animation and validation of TLA specifications using ProB.
The following article describes the translation: Dominik Hansen and Michael Leuschel. Translating TLA+ to B for Validation with ProB. Proceedings IFM 2012. LNCS, vol 7321. pages 24-38. 2012. Link
More details about using TLA2B can be found on the ProB web pages.