MIL-DTL-24640/26 5XO Shipboard Cable

Mil-Spec Military part number MIL-DTL-24640/26 has a single cable-type designation: 5XO. The cable is rated for 600 volts and uses twisted pair identification codes by applying Method 6 or telephone identification code by Method 3.  24640/26 cords use Extruded irradiated cross-linked Polyalkene insulation with irradiated cross-linked Polyvinylidene Fluoride (PVDF) insulation and have a low-smoke zero-halogen (LSZH) cross-linked polyolefin (XLPO) jacket. The required number of insulated conductors is then combined into a single assembly, numbering consecutively from the center outward. Fillers may be used to create a firm, well-rounded cable which is enclosed with an optimized overall shield of tin-copper braid and is finally placed into a cross-linked polyolefin (XLPO) jacket. These cords are lightweight, non-watertight, and have non-flexing service. The cable operates within a temperature range of -20°C to +105°C. Non-watertight cables can be used within one or two continuous compartments, but are not permitted to penetrate bulkheads or watertight decks.

What does the cable designation 5XO mean?

In the cable designation for 5XO, 5 refers to five conductors per cable, X refers to irradiated cross-linked Polyalkene insulation with irradiated cross-linked Polyvinylidene Fluoride (PVDF) insulation, and O refers to an overall optimized tin-coated copper braided shield.

M24640/26 Construction:

• Conductors: Stranded tin-coated copper conductors
• Insulation: Extruded irradiated cross-linked Polyalkene insulation with irradiated cross-linked Polyvinylidene Fluoride (PVDF) insulation
• Shielding: An overall optimized tin-coated copper braided shield
• Jacket: Low-smoke zero-halogen (LSZH) cross-linked polyolefin (XLPO).

M24640/26 Ratings and Approvals

• Mil-Spec: MIL-DTL-24640
• Navy Shipboard Spec: 5XO
• SAE-AS81044/26 except that the identification will be according to MIL-STD-24640
• Voltage Rating: 600V

Features and Benefits of M24640/26 Cords

• Cross-linked polyalkene/polyvinylidene fluoride insulation provides protection in environments with ultra-high vacuum, high temperatures, and ionizing radiation.
• LSZH jacket is fire resistant and emits low smoke, which is ideal for shipboard settings which often have restricted ventilation
• LSZH jackets also emit low acid, gas, and toxicity when subjected to fire, maintaining circuit integrity
• Braided shielding is heavier than foil shielding and provides additional protection against EMI/RFI as well as protecting the cable in rugged environments. The braided shield also provides better grounding than foil shields.