From $0.20/ft
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Solid THHN/THWN-2 WireFrom $0.20/ft -
Solid THHN/THWN-2 WireFrom $0.20/ft - Solid THHN/THWN-2 WireFrom $0.20/ft
- Solid THHN/THWN-2 WireFrom $0.20/ft
Parent SKU : SRGK12-4
SKU : SRGK12-4-250
Specifically engineered for high-density power and control applications in extreme thermal zones, this 12 AWG 4-conductor SRG-K assembly provides elite performance where standard cables would degrade. Rated for continuous operation at 200C and 600V, this wire combines high-flexibility stranded copper with a specialized silicone rubber and fiberglass armor system.
The SRG-K series is constructed for use in high temperature applications as a multiple conductor control cable where resistance to abrasion and mechanical abuse are desired. The 12-gauge configuration offers significant current-carrying capacity for heavy-duty motors and industrial heaters. The 4-conductor configuration is ideal for 3-phase portable motors or for complex control signals requiring multiple power paths in a single, heat-shielded bundle.
Elite Thermal Resilience: Rated for continuous service up to 200C.
Sub-Zero Functionality: Suitable for applications down to -60C.
Torque-Free Construction: Cable utilizes a specialized "Torque Free" design that eliminates memory found in traditional cables, making it significantly easier to route.
Dual-Layer Protection: Each conductor features extruded silicone rubber insulation protected by an individual fiberglass braid cover.
Superior Mechanical Shielding: The assembly is wrapped in a braided aramid K-fiber outer jacket, providing superior cut-through and abrasion resistance.
Proven Fire Safety: This cable passes the IEEE-383 Vertical Cable Tray Flame Test (210,000 BTU/hr) and the NEMA WC 3 Flame Propagation Test.
Moisture Resistance: Passes the ICEA T-27-581 Water Absorption Test.
Corrosion Resistance: Features annealed tinned copper conductors that resist oxidation.
Conductor Size: 12 AWG
Number of Leads: 4
Stranding: 19 Strands
Voltage Rating: 600V
Outer Diameter: 0.56 inches (14.15 mm)
Weight: 182.47 lbs per 1000 ft
Insulation Material: Silicone Rubber with Fiberglass Braid
Outer Jacket: Aramid K-Fiber Braid
Steel and Glass Plants: Widely used in environments where resistance to mechanical abuse and heat is critical.
High-Temperature Motor Leads: Specifically constructed for connecting motors in areas with high ambient heat.
Boilers and Steam Lines: Ideal for routing power and control signals near high-temperature infrastructure.
Chemical Processing: Suitable for industrial plants where moisture, UV, and ozone exposure are present.
Technical Note: All dimensions listed are nominal. SRG-K is not recommended for outdoor use. It is the user's responsibility to verify that all materials meet the specific requirements of the project and comply with local electrical codes.
RADIX PART#: KD12CT04G
| Wire Size (AWG/MCM) | 12 AWG |
| Conductor Material | Tinned Copper |
| Conductor Type | Stranded |
| Strand Count | 19 |
| Outer Diameter (OD) (in/mm) | 0.475 in. / 12.06 mm |
| Jacket Type | Aramid Fiber Braid |
| Conductor Count | 4 |
| Shield | Unshielded |
| Insulation Type | Silicone Rubber, Fiberglass Braid |
| Voltage Rating | 600V |
| Submersible | No |
| Sunlight Resistance Rating | Yes |
| Temperature Rating | 200ºC |
| Standards | NEMA WC 3 Flame Propogation Test IEEE 1202 Vertical Cable Tray Flame Test |
| Miscellaneous Information | The data shown are approximate and subject to standard industry and manufacturer tolerances |
| RoHS Compliance | Yes |
| Primary Applications | Used for leads to motors, transformers or other electrical equipment where hazardous and/or high temperature conditions exist requiring flexible heat resistant conductors at 600 volts |
| Common Uses |
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| Weight per Foot | 0.145 lb |
In-stock orders placed before 3pm EST typically ship within 1-2 business days. Our business days are Monday through Friday; we do not process orders on Saturday, Sunday, or major US Holidays.
You will receive an e-mail with a tracking number within 1-2 business days from the time its shipped. You will also be able to view your order status and tracking numbers in your account order history.
Expedited shipments are delivered Monday-Friday except on US Holidays. The order must be placed before 12pm CST to ship same day ( Mon-Fri Only).
You have 30 days from the day you receive the item to contact us for a return. Returns are subject to a 30% Restocking Fee.
Please contact us at help@wireamerica.com to request a return authorization. Have your order number or name the order was placed with ready and we will email you an RMA (return) number and instructions for return. Currently, we do not offer exchanges. A new order must be placed if you need a different item. If you provide the new order number at the time of your return request, the restocking fee may be lowered.
Orders on any items with a material value of $50 or less are non-returnable.
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Physical Specifications
Technical Specifications
Usage & Installation:
Packaging & Dimensions:
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Using a heat sleeve over standard wire is like wearing a winter coat over a chocolate bar—eventually, the heat gets through and the inside melts. Standard wire insulation (like PVC) will off-gas and liquefy at high temperatures even if it's covered. SRG-K is built with heat-proof materials from the copper core all the way to the outer braid.
The "12" tells you the thickness of the copper (enough to handle about 20-30 amps safely in high heat), and the "4" tells you there are four separate wires inside the jacket. This is perfect for 3-phase equipment (three power wires + one ground) or machines that need two power wires and two extra wires for a safety sensor.
Yes. Fiberglass is essentially made of glass fibers, which do not burn. While the wire shouldn't be held directly in an open flame, it is designed to sit inside kilns, industrial ovens, and commercial fryers where the air temperature is hot enough to cook food or melt standard plastics.
House wiring is usually a single solid chunk of copper, which is stiff. This wire is made of hundreds of tiny, hair-like copper strands. This makes it "Highly Flexible," which is essential when you have to bend the wire into a small motor housing or around a sharp corner inside a heating cabinet.
This 12 AWG, 4-conductor wire is a specialized powerhouse designed for industrial environments that experience extreme thermal stress. Rated for continuous use at 200°C (392°F), it is the specific choice for wiring 3-phase motors, industrial furnaces, and heavy-duty heating elements. By providing four heavy-gauge conductors, this cable allows for three power phases plus a dedicated ground, or two power phases with two control lines, all housed within a single, heat-proof assembly.
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