Crouse-Hinds series C30 and C31 conduit outlet boxes are installed in electrical systems within hazardous areas to provide protection against exterior explosion where acetylene, hydrogen and other hazardous gases are present. The IECEx outlet boxes protect conductors in threaded rigid conduit, act as pull and splice boxes, allow for a change conduit direction, and provide access to conductors for maintenance and future system changes. C30 and C31 conduit outlet boxes are approved for use in Zone 1, 2, 21 and 22 hazardous areas.