What This M12 D-Coded Plug Covers and What It Doesn't
The T4112512041-000 is an M12 D-coded plug with 4 female sockets, screw termination, and a right-angle cable exit. The D-coding is the key here — it's the Profinet / Ethernet / Industrial Ethernet coding, not the A-coded sensor bus or B-coded fieldbus. If your network expects D-coding, this is the right shell; if you try to mate it with an A-coded receptacle, the keying stops you before you can cross-thread the coupling nut. It's a field-wireable plug — the screw terminals and the backshell with coupling nut let you terminate the cable in the field without special tooling beyond a screwdriver and a cable stripper. The cable opening accepts 0.236" to 0.315" (6.00 mm to 8.00 mm) diameter cable, which covers most standard industrial sensor and Ethernet cables. The backshell is glass-filled PBT, not metal — it provides strain relief and environmental sealing but doesn't carry the shield. The shell is brass with nickel finish, and the connector is shielded.
The T4112512041-000 has 4 positions arranged in the standard M12 D-coding pinout. D-coding uses a specific keyway position and pin arrangement — the female sockets are numbered 1 through 4. The orientation is D-coded, which means the keying pin on the plug aligns only with a D-coded receptacle. If you're wiring a Profinet device, the pinout is typically 1=TX+, 2=RX+, 3=TX-, 4=RX- (per IEC 61784-5-3), but confirm the device manufacturer's pin assignment before terminating. The connector is a right-angle plug — the cable exits at 90° to the mating axis.