Nearly complete Apollo Block II circuit beaker panel. This production representative for flight application panel measures 10.5 x 12.75, is numbered “226” at the top, and retains its electrical components and wiring. In fine condition, with four missing buttons. Panel would have been mounted in the spacecraft’s right hand equipment bay and supplies power to the Fuel Cell hydrogen (H2) and Oxygen (O2) tank heaters, signal conditioning boxes, fans; Fuel Cell water separator and glycol pump motors, radiators, and purge line heaters. In addition, the panel incorporates breakers for control of internal cabin flood and exterior EVA/run lighting. This panel incorporates modification as a result of lessons learned from the Apollo 13 oxygen tank explosion.
Terms and abbreviations used in our descriptions.