What is the difference in an NSX Cord and a Circuit Breaker ULP Cord?
Besides the various lengths, the cable itself is the same. It consists of a 4-wire cable, with an RJ45 jack at one end. The difference is what is terminated at the other end of the cable.
NSX Cord (example - see S434201 picture below)
The NSX Cord has an RJ45 jack at one end, and at the other end the 4 wires are terminated into a small terminal block. This is often used with Powerpact H, J or L breakers. If the terminal block is not needed, it can be removed.
Circuit Breaker ULP Cord (example - see LV434195 picture below)
The Circuit Breaker ULP Cord has an RJ45 jack at one end, and at the other end the 4 wires are ready to be connected into screw terminals of an accessory such as a communication module. This is often used with Powerpact P, R, and Masterpact NT and NW breakers.