M27500 Cables
NEMA WC27500 Shielded and Unshielded Military Wire Cable
Conductor: Various Platings and Strandings Insulation: Various Insulation Types Shield: Various Materials (Shielded and Unshielded) Jacket: Various Materials (Shielded and Unshielded) Download pdf of this page |
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ApplicationsThe ANSI/NEMA WC 27500 REV B specification is commonly used to describe both shielded and unshielded cable constructions for avionics, aerospace and airframe applications. The specification allows the user a wide variety of construction choices. Circuit identification, conductor size, insulation type, number of conductors, shielding material and jacket compound may all be specified using this document. QPL is required for WC27500 in addition to the basic component wires. The producer of the finished cable must be a qualified source under the applicable basic wire specification, or must provide evidence that Qualified wire was used in the construction of the cable. Since Marmon Aerospace and Defense ® has a large variety of military QPL approvals, it is able to provide one of the widest ranges of WC 27500 constructions of any source in the wire and cable industry. Although this brief sheet cannot list all the detailed testing and specification requirements contained in the complete WC 27500 document, we have summarized the major construction features of the specification and listed those that Marmon produces. |
Cable Specifications
Table 1: Basic Wire Specifications
Symbol | Basic Wire Specifications | Insulation Type | Temp Rating | Voltage |
A | SAE AS50861/1 | PVC/Nylon | 150°C | 600V |
B | SAE AS50861/2 | PVC/Nylon/Braids | 150°C | |
SB | SAE AS22759/32 | XLETFE | 150°C | |
SC | SAE AS22759/33 | XLETFE | 200°C | |
SD | SAE AS22759/34 | XLETFE | 150°C | |
SE | SAE AS22759/35 | XLETFE | 200°C | |
SM | SAE AS22759/41 | XLETFE | 200°C | |
SN | SAE AS22759/42 | XLETFE | 200°C | |
SP | SAE AS22759/43 | XLETFE | 200°C | |
SR | SAE AS22759/44 | XLETFE | 200°C | |
SS | SAE AS22759/45 | XLETFE | 200°C | |
ST | SAE AS22759/46 | XLETFE | 200°C | |
TE | SAE AS22759/16 | ETFE | 150°C | |
TG | SAE AS22759/18 | ETFE | 150°C | |
MH | SAE AS81044/9 | XL POLY/KYNAR | 150°C | |
MJ | SAE AS81044/10 | XL POLY/KYNAR | 150°C | |
MK | SAE AS81044/11 | XL POLY/KYNAR | 150°C | |
ML | SAE AS81044/12 | XL POLY/KYNAR | 150°C | |
MM | SAE AS81044/13 | XL POLY/KYNAR | 150°C |
The specification also allows a wide variety of jacket materials in both single and double wall constructions. The double jacket constructions are to be used in conjunction with the double shields listed above. A double jacket is applied using 2 shields with the inner jacket isolating the shields, plus an outer jacket.
Table 2: Jacket Types
Single Jacket | Double Jacket | Jacket Material | Temp Rating |
00 | 00 | No Jacket | - |
01 | 51 | Extruded White PVC | 90°C |
02 | 52 | Extruded Clear Nylon | 105°C |
05 | 55 | Extruded Clear FEP | 200°C |
08 | 58 | Extruded White Irradiated PVDF | 150°C |
09 | 59 | Extruded White FEP | 200°C |
10 | 60 | Extruded Clear PVDF | 125°C |
14 | 64 | Extruded White ETFE | 150°C |
15 | 65 | Extruded Clear ETFE | 150°C |
20 | 70 | Extruded White PFA | 260°C |
21 | 71 | Extruded Clear PFA | 260°C |
23 | 73 | Extruded White Irradiated ETFE | 200°C |
Table 3: Shield Descriptions
Single Shield | Double Shield | Shield Material | Temp Rating |
U | - | Not Shielded | - |
T | V | Tin Plated Copper, Round | 150°C |
S | W | Silver Plated Copper, Round | 200°C |
N | Y | Nickel Plated Copper, Round | 260°C |
F | Z | Stainless Steel, Round | 400°C |
C | R | Nickel Clad Copper, Round | 400°C |
M | K | Silver Plated High Strength, Copper Alloy, Round | 200°C |
P | L | Nickel Plated High Strength, Copper Alloy, Round | 260°C |
Symbol | Basic Wire Specifications | Shield Material |
Jacket Material | Temperature Rating | Voltage Rating |
Table 1 | Table 1 | Table 2 | Table 3 | ||
A B |
SAE AS50861/1 SAE AS50861/2 |
U T V |
00 01 51 |
105°C 90°C 90°C |
600V |
MH MJ MK ML MM |
SAE AS81044/9 SAE AS81044/10 SAE AS81044/11 SAE AS81044/12 SAE AS81044/13 |
U T V |
00 08 58 |
150°C | 600V |
SB SD |
SAE AS22759/32 SAE AS22759/34 |
U T V |
00 23 73 |
150°C | 600V |
SC SE SP SR |
SAE AS22759/33 SAE AS22759/35 SAE AS22759/43 SAE AS22759/44 |
U S W |
00 23 73 |
200°C | 600V |
SM SN SS ST |
SAE AS22759/41 SAE AS22759/42 SAE AS22759/45 SAE AS22759/46 |
U N Y |
00 23 73 |
200°C | 600V |
All products are manufactured to meet RoHS compliance. For exceptions, please contact our sales department at 1-866-303-9473.