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"After ordering an urgent part from Marvo, I received excellent customer service and Rob was very helpful."
Festo NECU-G78G5-C2 is a compact NECU Series fieldbus power supply socket designed for reliable power connections in industrial automation environments. It features a straight 7/8 in, 5‑pin interface with NFPA/T3.5.29 R1-2003 plug encoding and a screw-terminal connection on the wiring side for secure, straightforward installation.
Built for demanding conditions, this socket supports an operational voltage range of 0–250 V AC/DC with a permissible current load up to 8 A and surge immunity of 2.5 kV. The IP67-rated housing helps protect against dust and temporary immersion, while the -25 °C to +80 °C ambient temperature range suits a wide range of panel and machine applications. The connector accepts cable diameters from 6 to 12 mm and supports conductor cross-sections up to 1.5 mm².
The NECU-G78G5-C2 is constructed with a black PA housing, a nickel-plated die-cast zinc union nut, FPM/NBR seals, and gold-plated copper-alloy contacts to promote stable electrical performance and corrosion resistance in low-stress environments. Overall dimensions are approximately 89 mm (length) x 28 mm (width), making it a space-efficient choice for fieldbus power distribution and machine wiring assemblies.
| Specification | Description |
|---|---|
| Manufacturer | Festo |
| Series | NECU |
| Manufacturer Part Number | NECU-G78G5-C2 |
| Alternative Part Number | NECUG78G5C2 |
| Festo Part Number | 543107 |
| Product Type | Fieldbus power supply socket |
| Overview | Straight 7/8" 5-pin power supply socket designed to provide a sealed, durable connection point for fieldbus and industrial power wiring using a screw-terminal cable entry. |
| Connector Style (Side 1) | Straight socket |
| Interface (Side 1) | 7/8", 5-pin |
| Plug Coding / Encoding | NFPA/T3.5.29 R1-2003 |
| Termination (Side 2) | Screw terminal |
| Rated Voltage (DC) | 0 to 250 V DC |
| Rated Voltage (AC) | 0 to 250 V AC |
| Current Rating | 8 A |
| Surge Immunity | 2.5 kV |
| Degree of Protection | IP67 |
| Ambient Temperature Range | -25 °C to +80 °C |
| Permissible Cable Diameter | 6 to 12 mm |
| Connection Cross Section | 1.5 mm² |
| Housing Material | PA |
| Housing Color | Black |
| Union Nut Material | Nickel-plated die-cast zinc |
| Seal Materials | FPM, NBR |
| Contact Material / Plating | Copper alloy, gold-plated |
| Product Weight | 50 g |
| Dimensions | 89 mm (L) x 28 mm (W) |
| Standard / Norm | EN 61984 |
| Approvals | c CSA us (OL) |
| Compliance | RoHS-compliant |
| CE Marking | According to EU Low Voltage Directive |
| UKCA Marking | According to UK regulations for electrical equipment |
| Pollution Degree | 3 |
| Corrosion Resistance Class | CRC 1 (low corrosion stress) |
| LABS (PWIS) Conformity | VDMA24364-B2-L |
Big thanks to Rob for helping with an urgent request we had on a Friday afternoon. The part we needed was in Europe, and Rob went out of his way to get it ordered and delivered to us by the following Tuesday.City Bearings
Extremely helpful. They shipped me a replacement unit the next day, and I was up and running within 24 hours. A brand-new replacement from the machinery manufacturer would have had a 7-day lead time.Sean Conlin
Found the part we needed at the best price. I spoke with Rob to make sure it was actually in stock, as many companies don’t really have it available to ship. It was ready, checked, and shipped, and we received it within a few days from their German stock. Would definitely use again and recommend.Chris Sentance
First time working with Marvo. They had what I needed, took great care of me, and got my order out right away. I was very impressed with the service and the person I spoke with. I will definitely work with them again in the future.Robert Cohen
After ordering an urgent part from Marvo, I received excellent customer service and Rob was very helpful.Claire Hinchliff
Excellent service, especially from Mark, who stayed late to make sure the part arrived the same day since it was a critical component for me, even though it was my first time using Marvo. I will definitely use them again.Josh Holt
Absolutely fantastic service. Rob was very helpful. Great communication. The requested part was shipped in no time.Konrad Eliaszuk
Extremely helpful. They shipped me a replacement unit the next day, and I was up and running within 24 hours. A brand-new replacement from the machinery manufacturer would have had a 7-day lead time.Sean Conlin
First time working with Marvo. They had what I needed, took great care of me, and got my order out right away. I was very impressed with the service and the person I spoke with. I will definitely work with them again in the future.Robert Cohen
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