National Instruments MXI-Express

Note This terminal block is manufactured by Phoenix Contact. The Phoenix Contact part 

number is 2283647.

This document describes the connector and screw terminal pinouts of the 

NI TBX-50 terminal block.

The NI TBX-50 terminal block is DIN rail-mountable with screw terminals 

to connect the signals to the switch and includes a probe socket and a 50 pin 

D-SUB male connector.

Specifications

Maximum voltage .................................. 125 V

Maximum current................................... 2.5 A

Caution For hazardous voltage applications or measurements (>42.4 Vpk/60 VDC), install 

the NI TBX-50 in a UL listed, suitably rated NEMA or IP enclosure.

Refer to Figure 1 for the connector pin locations on the NI TBX-50.