Siemens 3TX4001-2A Auxiliary Contact Block | 1 NC | Screw Terminal

Q: What is the difference between 3TX4001-2A and 3TX4001-1A?A: The 3TX4001-2A (this model) provides 1 NC contact, while the 3TX4001-1A provides 1 NO (Normally Open) contact.

Q: Which contactors is this compatible with?A: It is primarily designed for the SIRIUS 3TF and 3TH series contactors and relay contactors.

Q: Can I mount more than one block?A: Depending on the contactor size, you can often mount multiple 3TX auxiliary blocks to get the exact combination of NO and NC contacts you need.