160-Pin Screw Terminal, 100 V, DIN Rail, SwitchBlock Terminal Block—The TBX-2808 is an unshielded, DIN-rail-mountable terminal breakout block. It includes a printed circuit board (PCB) with screw terminals that provide connections to all channels of a SwitchBlock module. The TBX-2808 includes a safety interlock resistor to engage the SwitchBlock module’s safety relays, allowing connections to the SwitchBlock analog bus.