TEST TERMINAL BLOCKS &#8211

Description

APPLICATION: For mounting on switchboard panels for use in conjunction with test equipment to facilitate the testing of AC instruments, meters and relays Features:

FEATURES Type TTB4-W test blocks are essentially 4 pole jacks, provided with moulded phenolic covers, that have internal plug contacts which
make a through connection when the cover is in place The contacts in the blocks are of the line-pressure type and provide positive contact with minimum contact resistance For current circuits, auxiliary contacts are used which automatically short circuit the current transformer when the cover or plug is removed Routine testing can be accomplished simply by removing the cover and substituting the properly connected test plug. Normal connections
are restored by replacing the cover Contact rating is 250 volts, 10 amperes continuously A hole in the cover allows for securing against unauthorised use