Industrial networking
7/8-16UNF vs M12 L-Code: Two Phoenix Contact Power Cables
Use 1416837 for a 7/8 inch A-coded port at 8 A. Use 1276572 for an M12 L-coded port at 16 A and 63 V DC. The 7/8 inch page prints both 600 V UL and 50 V IEC.
On this page
Use Phoenix Contact 1416837 when the port is a 7/8-16UNF A-coded connector. As of October 22, 2026, that cable is 5 positions, 5 x AWG 16, nominal current 8 A, with a UL rating of 600 V AC/DC and an IEC rating of 50 V AC/DC, at a fixed length of 5 m. Use Phoenix Contact 1276572 when the port is an M12 L-coded power connector. That cable is 5 positions, 5 x 2.5 mm², 63 V DC, and 16 A, with length from 0.2 m to 40.0 m. The thread and the key are different. The current on the 7/8 inch page is 8 A. The current on the L-code page is 16 A.
What 1416837 prints for the 7/8 inch port
Part 1416837 is a power cable with a straight 7/8-16UNF plug and a straight 7/8-16UNF socket, both A-coded, and a yellow PVC cable of 5 m. Conductor structure on the voltage-supply line is 65 x AWG 32. Conductor cross-section is 5 x AWG 16. Cable nominal voltage is 600 V. Connector nominal voltage is split: 600 V AC/DC labeled as the UL rating, and 50 V AC/DC labeled as the IEC rating. Nominal current is 8 A. A drawing that says 600 V is using the UL line. A drawing that says 50 V is using the IEC line. Both lines are on the page.
Degree of protection is IP68. Plug and socket ambient temperature is -20°C to 105°C. Cable temperature for fixed installation is -40°C to 105°C. Cable temperature for flexible installation is -30°C to 105°C. The page lists a UL list document whose file name includes FILEE221474. That is the document name on the page, opened October 22, 2026. Flame resistance is UL 1581, FT2. Other resistance includes UV resistant for 720 hours to UL 2556.
What 1276572 prints for the L-coded port
Part 1276572 is a shielded power cable for direct current up to 16 A and 63 V. Ends are a straight M12 plug and an angled M12 socket, both L-coded. Length is a free entry from 0.2 m to 40.0 m. Nominal voltage is 63 V DC. Nominal current is 16 A. Conductor cross-section on the options opened is 5 x 2.5 mm². The standard is IEC 61076-2-111. Degree of protection is IP65 and IP67. Cable nominal voltage on those options is 300 V AC or under. The connector nominal voltage on the same item remains 63 V DC.
The L-code and A-code comparison uses this same L-code item against a 4 A sensor cable. The power coding page places L with T on DC and S with K on AC. Neither of those pages is the 7/8-16UNF thread.
| Part | Thread and coding | Positions and wire | Nominal current | Connector voltage the page prints |
|---|---|---|---|---|
| 1416837 | 7/8-16UNF, A-coded, plug and socket | 5 positions, 5 x AWG 16 | 8 A | 600 V AC/DC UL rating, and 50 V AC/DC IEC rating |
| 1276572 | M12, L-coded, straight plug and angled socket | 5 positions, 5 x 2.5 mm² | 16 A | 63 V DC |
Length and jacket are part of the part number
1416837 is a 5 m yellow PVC cable. Length on that item is the printed 5 m. 1276572 accepts 0.2 m to 40.0 m and is shielded, with the jacket chosen from the options on that item. A longer 7/8 inch cable is a different product number. A 5 m L-code cable can be 1276572 when 5 m sits inside 0.2 m to 40.0 m and the port is L-coded. The 7/8 inch thread stays on 1416837.
Protection on 1416837 is IP68. Protection on 1276572 is IP65 and IP67. Temperature on the 7/8 inch plug and socket is -20°C to 105°C. Copy the degree and the temperature from the part the drawing names. The sensor cable guide is the M12 A-code sensor case, which is a different shell from this 7/8 inch A-code.
What to write next to the power connector
- Thread: 7/8-16UNF or M12.
- Coding: A on 1416837, L on 1276572.
- Part number and length. 5 m is fixed on 1416837. 0.2 m to 40.0 m is the box on 1276572.
- Current: 8 A or 16 A.
- Voltage line: UL 600 V AC/DC, IEC 50 V AC/DC, or 63 V DC. Name the line the equipment uses.
- Wire: 5 x AWG 16, or 5 x 2.5 mm².
Questions these two pages answer
Is the 7/8 inch cable a 600 V part?
The page prints 600 V AC/DC as the UL rating and 50 V AC/DC as the IEC rating, plus 600 V as the cable nominal voltage. A request that says only 600 V has dropped the IEC line. Copy the line the device standard uses.
Will an L-coded plug fit the 7/8 inch socket?
1416837 is 7/8-16UNF. 1276572 is M12 L-code. The thread and the key are the port. Current and voltage do not make them interchangeable.
Can the 7/8 inch page be used at 16 A because the wire is larger?
1416837 prints 8 A. 1276572 prints 16 A on 5 x 2.5 mm². AWG 16 on the 7/8 inch page does not change the 8 A line. Use the current the part number prints.
Sources
Thread, coding, current, both voltage lines, wire size, length, protection, and temperature are from the Phoenix Contact pages for 1416837 and 1276572. Both were opened October 22, 2026.