Flame Retardant Strain Reliefs
Last Updated: April 1, 2025
Description
Flame retardant strain reliefs are specialized components designed to protect cables and wires from mechanical stress and potential damage. They are engineered to prevent the spread of flames in the event of a fire, thereby enhancing the safety of electrical installations. These strain reliefs are typically made from materials that are resistant to fire, such as PVC or CPE thermoplastics, which help to slow down the spread of flames and reduce the emission of toxic gases during combustion .
Working Principle
Flame retardant strain reliefs function by securing the cable at the connection point, preventing it from being pulled out or damaged due to mechanical stress. They are often used in conjunction with cable glands or bushings, which provide additional support and protection. The flame retardant properties of these strain reliefs are achieved through the use of materials that are designed to resist ignition and self-extinguish when exposed to fire. This makes them particularly useful in environments where fire safety is a critical concern, as they help to contain and minimize the impact of a fire .
Applications
Flame retardant strain reliefs are commonly used in industries where fire safety is paramount. Specific examples include:
- Electrical panels and junction boxes in industrial settings, where they help to prevent electrical fires by securing cables and minimizing the risk of sparks or shorts.
- Data centers and server rooms, where they protect critical network cables from mechanical damage and potential fire hazards.
- Public transportation systems, such as trains and buses, where they are used to secure electrical wiring and prevent the spread of fire in the event of an accident.
Advantages over other Strain Reliefs
One of the primary advantages of flame retardant strain reliefs over standard strain reliefs is their ability to enhance fire safety. By using materials that are resistant to ignition and capable of self-extinguishing, these strain reliefs provide an additional layer of protection in environments where fire risk is a concern. This makes them particularly valuable in applications where safety regulations require the use of fire-resistant materials .
Limitations
Flame retardant strain reliefs may have limitations in terms of their mechanical properties compared to non-flame retardant options. For instance, the materials used to achieve flame retardancy might not offer the same level of flexibility or durability as other materials, potentially leading to a trade-off between fire safety and mechanical performance.
Considerations
When selecting flame retardant strain reliefs, several factors should be considered:
- Initial Costs: Flame retardant materials may be more expensive than standard materials, leading to higher initial costs.
- Operating Expense: The use of flame retardant strain reliefs can potentially reduce operating expenses by minimizing the risk of fire-related damage and downtime.
- Durability: While flame retardant materials offer enhanced fire safety, they may not be as durable as other materials in terms of mechanical wear and tear.
- Replacement and Maintenance Costs: The need for replacement and maintenance may vary depending on the specific application and environmental conditions. Regular inspections and maintenance are recommended to ensure continued performance and safety.
from Interpower
Flammability Rating: UL 94V-0. Dynamic Temp. Rating: -20 ºC to 80 ºC. Static Temp. Rating: -40 ºC to 100 ºC. Ingress Protection Rating: IP68/69k. NEMA Enclosure Rating: NEMA 6. Cable Diameter: 4.0mm to 8.0mm. Male Thread Type: 3/8" NPT. Mounting Hole: 17.2mm. Wrenching Flats:... [See More]
- Features: LiquidTight; Flame Retardant
- Color: Black
- Material: Polyamide / Nylon®
- Diameter: 0.157 to 0.315
from Altech Corp.
Altech ’s full line Liquid Tight Strain Reliefs (Cord Grips) which are used to seal cable entries, keep contaminants from entering enclosures, provide strain relief and thus reduce stress on components and termination points inside enclosures. Functions include Straight-Through, Increased... [See More]
- Features: Flame Retardant
- Diameter: 0.264
- Material: Polyamide 6
- Operating Temperature: -40 to 120
from Interpower
Flammability Rating: UL 94V-0. Dynamic Temp. Rating: -20 ºC to 80 ºC. Static Temp. Rating: -40 ºC to 100 ºC. Ingress Protection Rating: IP68/69k. NEMA Enclosure Rating: NEMA 6. Cable Diameter: 4.0mm to 8.0mm. Male Thread Type: 3/8" NPT. Mounting Hole: 17.2mm. Wrenching Flats:... [See More]
- Features: LiquidTight; Flame Retardant
- Color: Black
- Material: Polyamide / Nylon®
- Diameter: 0.157 to 0.315
from Interpower
Flammability Rating: UL 94V-0. Dynamic Temp. Rating: -20 ºC to 80 ºC. Static Temp. Rating: -40 ºC to 100 ºC. Ingress Protection Rating: IP68/69k. NEMA Enclosure Rating: NEMA 6. Cable Diameter: 3.0mm to 6.5mm. Male Thread Type: PG7 / 1/4" NPT. Mounting Hole: 12.0mm. Wrenching... [See More]
- Features: LiquidTight; Flame Retardant
- Color: Silver
- Material: Brass
- Diameter: 0.118 to 0.256
from Interpower
Flammability Rating: UL 94V-0. Dynamic Temp. Rating: -20 ºC to 80 ºC. Static Temp. Rating: -40 ºC to 100 ºC. Ingress Protection Rating: IP68/69k. NEMA Enclosure Rating: NEMA 6. Cable Diameter: 4.0mm to 8.0mm. Male Thread Type: 3/8" NPT. Mounting Hole: 17.2mm. Wrenching Flats:... [See More]
- Features: LiquidTight; Flame Retardant
- Color: Silver
- Material: Brass
- Diameter: 0.157 to 0.315
from Interpower
Flammability Rating: UL 94V-0. Dynamic Temp. Rating: -20 ºC to 80 ºC. Static Temp. Rating: -40 ºC to 100 ºC. Ingress Protection Rating: IP68/69k. NEMA Enclosure Rating: NEMA 6. Cable Diameter: 4.0mm to 8.0mm. Male Thread Type: 3/8" NPT. Mounting Hole: 17.2mm. Wrenching Flats:... [See More]
- Features: LiquidTight; Flame Retardant
- Color: Black
- Material: Polyamide / Nylon®
- Diameter: 0.157 to 0.315
from Interpower
Flammability Rating: UL 94V-0. Dynamic Temp. Rating: -20 ºC to 80 ºC. Static Temp. Rating: -40 ºC to 100 ºC. Ingress Protection Rating: IP68/69k. NEMA Enclosure Rating: NEMA 4x and 6. Cable Diameter: 3.0mm to 6.5mm. Male Thread Type: M12 x 1.5mm. Mounting Hole: 12.0mm. Wrenching... [See More]
- Features: LiquidTight; Flame Retardant
- Color: Black
- Material: Polyamide / Nylon®
- Diameter: 0.118 to 0.256
from Interpower
Flammability Rating: UL 94V-0. Dynamic Temp. Rating: -20 ºC to 80 ºC. Static Temp. Rating: -40 ºC to 100 ºC. Ingress Protection Rating: IP68/69k. NEMA Enclosure Rating: NEMA 6. Cable Diameter: 2.0mm to 3.2mm. Male Thread Type: M6 x 1. Mounting Hole: 6.0mm. Wrenching Flats: 8.0mm. [See More]
- Features: LiquidTight; Flame Retardant
- Color: Silver
- Material: Brass
- Diameter: 0.079 to 0.126
from Interpower
Flammability Rating: UL 94V-0. Dynamic Temp. Rating: -20 ºC to 80 ºC. Static Temp. Rating: -40 ºC to 100 ºC. Ingress Protection Rating: IP68/69k. NEMA Enclosure Rating: NEMA 6. Male Thread Type: PG9. Mounting Hole: 15.2mm. Wrenching Flats: 19mm. Number of Holes: 4. Diameter of... [See More]
- Features: LiquidTight; Flame Retardant
- Color: Black
- Material: Polyamide / Nylon®
- Mounting Size: 0.5984
from icotek GmbH
The strain relief plate KZL is used for static or dynamic applications for organizing and securing cables on machines, control panels or cable carriers. The undercut on the comb-shaped profile provides secure strain relief according to EN 50262 / EN 62444. Strain relief of the cables is achieved by... [See More]
- Features: Flame Retardant
- Length: 0.4528 to 5.49
- Material: Polyamide / Nylon®
- Operating Temperature: -40 to 140
from icotek GmbH
The strain relief plate SF|ZL is used for assembly on 35 mm DIN rails shape H. The SF|ZL can be used for strain relief of cables and conduits. It is based upon the strain relief plate ZL, which is mounted on snap-feet for 35 mm DIN rails shape H. Advantages. Simple assembly. Cost-effective. High... [See More]
- Features: Flame Retardant
- Length: 1.52 to 7.09
- Material: Polyamide / Nylon®
- Operating Temperature: -40 to 140
from icotek GmbH
The strain relief plate ZL is used for static or dynamic applications for organizing and securing cables on machines, control panels or cable carriers. The undercut on the comb-shaped profile provides secure strain relief according to EN 50262 / EN 62444. Strain relief of the cables is achieved by... [See More]
- Features: Flame Retardant
- Length: 1.52 to 7.09
- Material: Polyamide / Nylon®
- Operating Temperature: -40 to 140
from icotek GmbH
The strain relief plate ZL-AB is used for static or dynamic applications for organizing and securing cables on machines, control panels or drag chains. By using aluminum / brass nuts for the screw holes, a better fit of the strain relief plate is achieved, even in high vibration environments. [See More]
- Features: Flame Retardant
- Length: 1.52 to 7.09
- Material: Polyamide / Nylon®
- Operating Temperature: -40 to 140