4/0 SRML 200ºC High Temp Wire

SRML4/0

SRML4/0-250

200ºC HIGH TEMP SILICONE RUBBER INSULATION WITH FIBERGLASS BRAID
Download Spec Sheet
1/2
Wire Size 4/0
Conductor Type Stranded
Outer Diameter 0.78 in. / 19.812 mm
Conductor Count 1
Voltage Rating 600V
Ampacity Rating 510
Temperature Rating 200ºC
Download Spec Sheet

Product Details

Product Details
SRML (Silicone Rubber Motor Lead) wire is a specialized high-temperature electrical wire primarily applied where extreme heat, flexibility, and durability are paramount. Its main uses include motor lead wire, connecting power to electric motors, particularly in industrial or hazardous settings. SRML is suitable in demanding industrial environments and power generation equipment where wiring faces repeated movement, abrasion, or exposure to oils, chemicals, and moisture, making it a go-to solution for reliable performance under severe thermal and environmental stress. Silicone rubber is halogen free and is very flexible while the fiberglass braid provides good mechanical strength.

APPLICATIONS:
Motor lead wire, ovens, furnaces, kilns, heating elements, stoves, washing machines and various lighting fixtures.

TEMPERATURE RATING:
150ºC / 302ºF

MINIMUM BEND RADIUS:
5.92 Inches

AMPACITY RATING:
510 Amps



The data shown is approximate and subject to standard industry and manufacturer tolerances. 8 AWG and 6 AWG are 150°C UL (200°C NonUL) 4 AWG and larger are 200°C UL * 250 MCM - 750 MCM are Constructed with K fiber, UL 3410, CSA: AWM Class 1, Group A/B.

Full Specifications

Full Specifications
Download Spec Sheet

Physical Specifications

Wire Size (AWG/MCM) 4/0
Conductor Material Tinned Copper
Conductor Type Stranded
Strand Count 259
Outer Diameter (OD) (in/mm) 0.78 in. / 19.812 mm
Jacket Type Fiberglass braid with a high temperature finish
Conductor Count 1
Shield Unshielded
Insulation Type Silicone Rubber

Technical Specifications

Voltage Rating 600V
Ampacity Rating 510
Submersible No
Flexibility Rating Low
Sunlight Resistance Rating Yes
Temperature Rating 200ºC
Standards UL Style 3069
UL Style 3079
UL Style 3127
UL Style 3231
UL Style 3278
Miscellaneous Information The data shown are approximate and subject to standard industry and manufacturer tolerances 8 AWG and 6 AWG are 150°C UL (200°C NonUL) 4 AWG and larger are 200°C UL * 250 MCM - 750 MCM are Constructed with K fiber, UL 3410, CSA: AWM Class 1, Group A/B.

Usage & Installation

Primary ApplicationsSilicone Rubber Motor Lead wire is used in demanding, high-heat environments and for internal wiring within electrical equipment.
Common Uses
  • Motor lead wire
  • ovens
  • furnaces
  • kilns
  • heating elements
  • stoves
  • washing machines and various lighting fixtures.

Packaging & Dimensions:

Weight per Foot 0.815 lb

Shipping and Returns

Shipping and Returns

General Shipping Information

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 Shipping

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).

Returns

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.

SRML High Temp Wire

Wire America | Wire Flexibility Series

This video shows the flexibility, size, jacket detail, conductor material and stranding of the 12 Gauge, 4/0 and 500 MCM SRML High Temperature wires.

4/0 SRML 200ºC High Temp Wire

SRML4/0

SRML4/0-250

200ºC HIGH TEMP SILICONE RUBBER INSULATION WITH FIBERGLASS BRAID
In Stock
Ships in 1-2 days

SRML4/0

SRML4/0-250

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$9.65/ft
$9.73/ft
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Product Details

Product Details
SRML (Silicone Rubber Motor Lead) wire is a specialized high-temperature electrical wire primarily applied where extreme heat, flexibility, and durability are paramount. Its main uses include motor lead wire, connecting power to electric motors, particularly in industrial or hazardous settings. SRML is suitable in demanding industrial environments and power generation equipment where wiring faces repeated movement, abrasion, or exposure to oils, chemicals, and moisture, making it a go-to solution for reliable performance under severe thermal and environmental stress. Silicone rubber is halogen free and is very flexible while the fiberglass braid provides good mechanical strength.

APPLICATIONS:
Motor lead wire, ovens, furnaces, kilns, heating elements, stoves, washing machines and various lighting fixtures.

TEMPERATURE RATING:
150ºC / 302ºF

MINIMUM BEND RADIUS:
5.92 Inches

AMPACITY RATING:
510 Amps



The data shown is approximate and subject to standard industry and manufacturer tolerances. 8 AWG and 6 AWG are 150°C UL (200°C NonUL) 4 AWG and larger are 200°C UL * 250 MCM - 750 MCM are Constructed with K fiber, UL 3410, CSA: AWM Class 1, Group A/B.

Full Specifications

Full Specifications
Download Spec Sheet

Physical Specifications

Wire Size (AWG/MCM) 4/0
Conductor Material Tinned Copper
Conductor Type Stranded
Strand Count 259
Outer Diameter (OD) (in/mm) 0.78 in. / 19.812 mm
Jacket Type Fiberglass braid with a high temperature finish
Conductor Count 1
Shield Unshielded
Insulation Type Silicone Rubber

Technical Specifications

Voltage Rating 600V
Ampacity Rating 510
Submersible No
Flexibility Rating Low
Sunlight Resistance Rating Yes
Temperature Rating 200ºC
Standards UL Style 3069
UL Style 3079
UL Style 3127
UL Style 3231
UL Style 3278
Miscellaneous Information The data shown are approximate and subject to standard industry and manufacturer tolerances 8 AWG and 6 AWG are 150°C UL (200°C NonUL) 4 AWG and larger are 200°C UL * 250 MCM - 750 MCM are Constructed with K fiber, UL 3410, CSA: AWM Class 1, Group A/B.

Usage & Installation

Primary ApplicationsSilicone Rubber Motor Lead wire is used in demanding, high-heat environments and for internal wiring within electrical equipment.
Common Uses
  • Motor lead wire
  • ovens
  • furnaces
  • kilns
  • heating elements
  • stoves
  • washing machines and various lighting fixtures.

Packaging & Dimensions:

Weight per Foot 0.815 lb

Shipping and Returns

Shipping and Returns

General Shipping Information

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 Shipping

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).

Returns

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.

SRML High Temp Wire

Wire America | Wire Flexibility Series

This video shows the flexibility, size, jacket detail, conductor material and stranding of the 12 Gauge, 4/0 and 500 MCM SRML High Temperature wires.
4/0 SRML 200ºC High Temp Wire
Full Specifications

Physical Specifications

Wire Size (AWG/MCM) 4/0
Conductor Material Tinned Copper
Conductor Type Stranded
Strand Count 259
Outer Diameter (OD) (in/mm) 0.78 in. / 19.812 mm
Jacket Type Fiberglass braid with a high temperature finish
Conductor Count 1
Shield Unshielded
Insulation Type Silicone Rubber

Technical Specifications

Voltage Rating 600V
Ampacity Rating 510
Submersible No
Flexibility Rating Low
Sunlight Resistance Rating Yes
Temperature Rating 200ºC
Standards UL Style 3069
UL Style 3079
UL Style 3127
UL Style 3231
UL Style 3278
Miscellaneous Information The data shown are approximate and subject to standard industry and manufacturer tolerances 8 AWG and 6 AWG are 150°C UL (200°C NonUL) 4 AWG and larger are 200°C UL * 250 MCM - 750 MCM are Constructed with K fiber, UL 3410, CSA: AWM Class 1, Group A/B.

Usage & Installation:

Primary ApplicationsSilicone Rubber Motor Lead wire is used in demanding, high-heat environments and for internal wiring within electrical equipment.
Common Uses
  • Motor lead wire
  • ovens
  • furnaces
  • kilns
  • heating elements
  • stoves
  • washing machines and various lighting fixtures.

Packaging & Dimensions:

Weight per Foot 0.815 lb
1 (833) 268-8644
info@wireamerica.com
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AWG, or American Wire Gauge, is the standard system used primarily in North America to measure the diameter of electrical conductors. This system is critical because a wire's size directly impacts its electrical resistance and how much current (ampacity) it can safely carry. A key principle is that the smaller the AWG number, the larger the wire's diameter; for instance, 12 AWG is thicker and can carry more current than 14 AWG. Sizes beyond 0 AWG are referred to as "aught" (e.g., 1/0, 2/0). Selecting the correct AWG is essential for safe electrical installations, preventing overheating, and minimizing voltage drop.
Voltage drop is the natural reduction in electrical potential that occurs as current travels through a circuit, from the power source to a device. This happens because all wires inherently have resistance, which converts some electrical energy into heat, leading to a loss of voltage. While minor voltage drop is normal, excessive amounts can cause problems like dimming lights, slow or overheating motors, and erratic electronic behavior. It can also lead to higher energy consumption and, in severe cases, create safety hazards due to overheating wires. Key factors influencing voltage drop include the wire's length and thickness (gauge), the amount of current flowing through it, and the quality of electrical connections.
In electrical wiring, amps (amperes) measure the rate of electrical current flow. Think of it as the volume of electricity moving through the wire at any given time. Crucially, every electrical wire has an ampacity rating, which is the maximum current it can safely carry continuously without overheating. Exceeding a wire's ampacity can lead to insulation damage and fire hazards, highlighting why proper wire sizing based on expected amperage is vital for safe electrical systems.
A wire's ampacity, or its safe current-carrying capacity, changes with temperature primarily because of two factors. First, the electrical resistance of copper and aluminum wires increases as they get hotter, causing them to generate more heat when current flows. Second, every wire's insulation has a maximum temperature limit; exceeding this can cause degradation and safety hazards. Therefore, in hotter environments, a wire must carry less current to avoid exceeding its insulation's temperature rating. This ensures the wire remains safe and functional, preventing overheating and potential failures.
We aim to provide authentic, precise images of each wire; however, with various product variations, it can be challenging. In such instances, we focus on showcasing the fundamental design. Always refer to the product specifications rather than relying solely on images.
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