The WECO Tab style 307PC05WE42 is a 5-pole terminal block with barrier connectors suitable for medium duty applications. The black polycarbonate mouldings allow relatively high working temperatures (up to 135°C) and are suitable for use with conductors with crimped terminals fitted. Series 307-PC is WECO’s equivalent to twin-row panel-mounted North American style barrier strips. They are molded of UL 94 V-0 self-extinguishing polycarbonate and available in 2 to 21 poles. The strips are fixed to the mounting surface using the molded mounting holes at each end of the strip.

The tabs are fitted in WE42 styles
Alternatively, tab styles WE53 to WE66 have flat tabs only with spacers between.
These are particularly suitable for use with 3070 A & B covers