Belden 3074F C55, Twinaxial Cable 18 AWG 600V PVC Blue
Description
Belden 3074F C55 is an RS-485 twinax 120 Ohm cable designed for industrial data communication in harsh environments. It features 1 pair 18 AWG (7x26) TC - Tinned Copper conductors with PP - Polypropylene insulation and a PVC - Polyvinyl Chloride outer jacket. For noise rejection, it uses an overall Beldfoil® shield (100% coverage, foil out) plus a secondary TC - Tinned Copper braid (55% coverage). It is rated 600 V (TC), 300 V (CMG, PLTC) and listed for TC, PLTC, ITC, and CMG applications, with Indoor/Outdoor suitability including Sunlight Resistance and UV Resistance.
Belden 3074F C55 Key Features
- RS-485 twinax design with 120 Ohm nominal characteristic impedance for data communication.
- 1 pair 18 AWG (7x26) TC - Tinned Copper conductors for consistent electrical performance.
- Dual-shield construction: overall Beldfoil® (Bi-Laminate (Alum+Poly)) tape, 100% coverage, foil out, plus a secondary TC - Tinned Copper braid with 55% coverage.
- PVC - Polyvinyl Chloride outer jacket with an overall cable diameter (nominal) of 0.460 in (11.7 mm).
- UL voltage rating: 600 V (TC), 300 V (CMG, PLTC).
- Environmental suitability includes Indoor/Outdoor, Sunlight Resistance, and UV Resistance.
Belden 3074F C55 Applications
- Supports RS-485 data communication in harsh environment installations where reliable signaling is required.
- In IIoT systems, it is commonly used to support industrial data communication across connected devices and equipment.
- In factory or process automation environments, it fits installations where consistent communication performance is needed.
- For video, audio, and data communication setups, it is applicable where the cable’s construction supports signal transmission.
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Specifications
| Attribute | Value |
|---|---|
| Pairs | 1 |
| Conductor size | 18 AWG |
| Conductor stranding | 7x26 |
| Conductor Material | TC - Tinned Copper |
| Nom. conductor diameter | 0.046 in |
| Insulation Material | PP - Polypropylene |
| Nom. insulation diameter | 0.164 in (4.17 mm) |
| Color Code | White & Blue |
| Insulation notes | Flame Retardant |
| Nom. velocity of prop. | 65% |
| Nom. conductor DCR | 6.9 Ohm/1000ft |
| Nom. outer shield DCR | 2.83 Ohm/1000ft (9.28 Ohm/km) |
| Attenuation @ 3 MHz | 0.34 dB/100ft |
| Attenuation @ 10 MHz | 1.07 dB/100ft |
| Attenuation @ 50 MHz | 2.39 dB/100ft |
| Attenuation @ 100 MHz | 3.38 dB/100ft |
| Attenuation @ 200 MHz | 4.78 dB/100ft |
| Attenuation @ 400 MHz | 6.76 dB/100ft |
| UL temperature | 75°C Dry, PLTC 75°C Dry/Wet |
| Operating temperature | -40°C to +75°C |
| Bend radius (stationary min.) | 3.2 in (81 mm) |
| Bend radius (installation min.) | 2.5 in (64 mm) |
| Max Pull Tension | 93 lbs (42 kg) |
| Bulk cable weight | 97 lbs/1000ft |
| Flammability / reaction to fire | UL1685 UL Loading, FT1, FT4 |
| Environmental suitability | Indoor/Outdoor, Indoor, Outdoor, Sunlight Resistance, UV Resistance, Aerial - When supported by messenger Wire |
| NEC / UL compliance | Article 336, Article 725, Article 727, Article 800, CMG, ITC, PLTC, TC |
| CEC / C(UL) compliance | CMG |
| European directive compliance | EU CE Mark, EU Directive 2015/863/EU (RoHS 2 amendment), EU Directive 2011/65/EU (RoHS 2), EU Directive 2012/19/EU (WEEE) |
| APAC compliance | China RoHS II (GB/T 26572-2011) |
| Sustainability | CA Prop 65 |
| Item Type | Belden Multi-Pair Cable |
| Other Part Numbers | 3074F C55, 3074F C55100, 3074F C55250, 3074F C55500, 3074F C551000 |
| Priced Per | FT |
Documents
Images are for reference only. Specifications may change without notice — verify suitability for your application before purchase. The manufacturer's documentation controls.
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