Overview

The 1746-N3 Connector Kit is used to terminate a cable which connects field I/O 

devices to SLC 500 32-point I/O modules. The kit contains a keyed 40-pin socket 

header with 45 socket crimp type contacts.

The N3 connector is compatible with 32-point I/O modules, catalog numbers 

1746-IB32, -IV32, -OB32, -OB32E -OV32 and Allen-Bradley 1492-IFM40 terminal 

blocks (see illustration). When the 1746-N3 is used to terminate the I/O cable at the 

1492-IFM40 end, it should be wired in a straight-through manner (i.e. pin 1 to pin 1, 

pin 2 to pin 2, etc.). For additional instructions, refer to the wiring instructions 

provided with your 32-point I/O module.

Use 24 AWG wire with the 1746-N3. Maximum wire length to the user terminal 

block is 10 meters for inputs and 3 meters for outputs with 7-strand, 24 AWG wire.