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Insulating Standoffs, Electrical Standoffs, Bus Bar Insulators

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Insulating Standoffs, Electrical Standoffs, Bus Bar Insulators

UL RecognizedElectrical Bus Bar Insulating Standoffs
Ceramic and Glastic Standoff Insulators:

 

Hi-Pot Tested to assure electrical reliability, Storm's high-voltage insulators are UL-recognized according to UL Standard for Safety 891.

Call 1-866-716-9773 if you need a quote on large quantities.

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Click here for print-ready PDF cutsheet >>

Click here for print-ready PDF Specifications >>

 

Click on the red Storm Part Number (below) to view or order the corresponding standoff insulator.

Note: The "Part Type" corresponds to the illustration above.

Storm Part Number

Glastic Part No.

Indoor Voltage

Shape

Diameter

Height

Insert Size

Insert Type

Part Type

1100-A1

2165-1A

600

Hex

1

1

1/4-20 x 5/16

Aluminum

Type 1

1100-A1/M6*

2165-3A

600

Hex

28.6mm

25mm

6mm x 5/16

Aluminum

Type 1

1125-A1

2165-1B

600

Hex

1

1-1/4

1/4-20 x 5/16

Aluminum

Type 1

R2137-A4

1603-2A

1500

Round

1-3/4

1-3/8

3/8-16 x 3/8

Aluminum

Type 2R

3213-A5

1461-1A

2500

Round

2-1/2

2-1/8

3/8-16 x 9/16

Aluminum

Type 3

3213-A6

1461-1B

2500

Round

2-1/2

2-1/8

1/2-13 x 5/8

Aluminum

Type 3

3213-S8

1461-1C

2500

Round

2-1/2

2-1/8

5/8-11 x 3/4

Steel

Type 3

R4150-A3

2015-2A

1500

Round

1-3/4

1-1/2

5/16-18 x 3/8

Aluminum

Type 4R

R4150-A4

2015-3A

1500

Round

1-3/4

1-1/2

3/8-16 x 3/8

Aluminum

Type 4R

UV4150-A4**

2015-3A

1500

Octagon

2

1-1/2

3/8-16 x 3/8

Aluminum

Type 4

4150-A4 

2015-3A

1500

Octagon

2

1-1/2

3/8-16 x 3/8

Aluminum

Type 4

4150-S2 

2015-1A

1500

Octagon

2

1-1/2

1/4-20 x 7/16

Steel

Type 4

4150-S4

2015-3A

1500

Octagon

2

1-1/2

3/8-16 x 3/8

Steel

Type 4

R4175-A3

2015-2B

2000

Round

1-3/4

1-3/4

5/16-18 x 3/8

Aluminum

Type 4R

R4175-A4

2015-3B

2000

Round

1-3/4

1-3/4

3/8-16 x 3/8

Aluminum

Type 4R

R4200-A3

2015-2C

2500

Round

1-3/4

2

5/16-18 x 3/8

Aluminum

Type 4R

R4200-A5

2015-3C

2500

Round

1-3/4

2

3/8-16 x 9/16

Aluminum

Type 4R

R4200-A5UV

2015-3C

2500

Round

1-3/4

2

3/8-16 x 9/16

Aluminum

Type 4R

4200-S5

2015-3C

2500

Octagon

2

2

3/8-16 x 9/16

Steel

Type 4

4200-A3

2015-2C

2500

Octagon

2

2

5/16-18 x 3/8

Aluminum

Type 4

4200-A5

2015-3C

2500

Octagon

2

2

3/8-16 x 9/16

Aluminum

Type 4

4200-A6

2015-4C

2500

Octagon

2

2

1/2-13 x 5/8

Aluminum

Type 4

4200-S3

2015-2C

2500

Octagon

2

2

5/16-18 x 3/8

Steel

Type 4

R4200-S5

2015-3C

2500

Round

1-3/4

2

3/8-16 x 9/16

Steel

Type 4R

4200-S6

2015-4C

2500

Octagon

2

2

1/2-13 x 5/8

Steel

Type 4

4225-A5

2015-3D

2700

Octagon

2

2-1/4

3/8-16 x 9/16

Aluminum

Type 4

4225-A6

2015-4D

2700

Octagon

2

2-1/4

1/2-13 x 5/8

Aluminum

Type 4

4225-S5

2015-3D

2700

Octagon

2

2-1/4

3/8-16 x 9/16

Steel

Type 4

4225-S6

2015-4D

2700

Octagon

2

2-1/4

1/2-13 x 5/8

Steel

Type 4

5250-A5

1872-1A

3200

Octagon

2-1/2

2-1/2

3/8-16 x 9/16

Aluminum

Type 5

5250-A6

1872-2A

3200

Octagon

2-1/2

2-1/2

1/2-13 x 5/8

Aluminum

Type 5

5263-A8

1872-3F

3400

Octagon

2-1/2

2-5/8

5/8-11 x 3/4

Aluminum

Type 5

5263-S8

1872-3F

3400

Octagon

2-1/2

2-5/8

5/8-11 x 3/4

Steel

Type 5

5275-A5

1872-1B

3600

Octagon

2-1/2

2-3/4

3/8-16 x 9/16

Aluminum

Type 5

5275-A6

1872-2B

3600

Octagon

2-1/2

2-3/4

1/2-13 x 5/8

Aluminum

Type 5

5300-A5

1872-1C

4100

Octagon

2-1/2

3

3/8-16 x 9/16

Aluminum

Type 5

5300-A6

1872-2C

4100

Octagon

2-1/2

3

1/2-13 x 5/8

Aluminum

Type 5

5325-A5

1872-1D

4500

Octagon

2-1/2

3-1/4

3/8-16 x 9/16

Aluminum

Type 5

5350-A5

1872-1E

5000

Octagon

2-1/2

3-1/2

3/8-16 x 9/16

Aluminum

Type 5

5350-A6

1872-2E

5000

Octagon

2-1/2

3-1/2

1/2-13 x 5/8

Aluminum

Type 5

6350-S10

1642-10E

5000

Round

3-3/4

3-1/2

3/8-16 x 5/8

Steel

Type 6

6350-S10 4X4

1642-10E

5000

Round

3-3/4

3-1/2

3/8-16 x 5/8

Steel

Type 6

6500-S10

N/A

7500

Round

2-3/4

5

3/8-16 x 5/8

Steel

Type 3L

6600-S10

2450-11

15000

Round

2-3/4

6

3/8-16 x 5/8

Steel

Type 6

6600-S10 4X4 RED

2450-11

15000

Round

2-3/4

6

3/8-16 x 5/8

Steel

Type 6

Notes:

* M = mm (millimeters)

**UV = Ultra-Violet Protective Coating

 

Storm Power's Standoff Insulators Are Available in Molded Polyester, High Temperature Ceramic Material or Glastic Fiberglass-Reinforced with UV Coating:

Polyester Standoff Insulator

Polyester Standoff Insulators >>

For Indoor Use in Low-Voltage Applications with Lower Temperatures

 

Ceramic Standoff Insulator

Ceramic Standoff Insulators >>

For High-Voltage Applications with High Temperatures

 

UV Protected Standoff Insulator

UV Coated Polyester Insulators >>

For Indoor Applications Protected from UV Radiation

 

Standoff Insulators Mounted on Bus Bar Kit

Storm Power's Most Popular Reinforced-Polyester Standoff Insulators

Also known as Glastic of Mar-Bal Standoff Insulators, Storm's High Voltage Insulators are made from fiberglass-reinforced thermo-set polyester, a bonded material with higher moisture and heat tolerance than plastic insulators and molded for high-strength, . This material also offers greater mechanical strength to enable electrical installers to crank up closer height tolerances than with porcelain insulators, making Storm's standoff insulators more suitable for ground bar and perimeter grounding applications.

Flame retardant and track resistant glass reinforced thermoset polyester molding compound recognized for current carrying devices under UL Material Recognition Number E 80533(N) and UL File E84767. They combine high mechanical strength with high arc resistance and dielectric properties at elevated temperatures and humidity. These shatter resistant insulators meet the most exacting standards for a variety of applications.

Poly Standoff Insulators are also sold with Storm's Ground Bar Kits.

Physical and Electrical Properties of Bus Bar Insulators

Tensile strength is the amount of stress that the insulator will withstand when pressure is applied pulling straight up on the bolt in the insert.

Cantilever strength is the amount of weight an insulator will support when something is hung on an insulator that is mounted on the wall.

Compression strength is the amount of weight an insulator will support in a direct vertical application of pressure.

Dielectric strength is another term for insulating properties. 

Arc resistance is expressed as the number of seconds that a material resists the formation of a surface-conducting path when subjected to an intermittently occurring arc of high voltage, low current characteristics.

A standoff insulator's height determines the distance that will separate a source of voltage from ground or other components. Since an electric current will jump across a gap, the greater the voltage, the greater the distance required for safety.

Thread size and insert material. Standoff insulators come with threaded metal inserts for mounting onto walls or cabinets. Several different thread sizes are offered for each size insulator, to accommodate a wide variety of applications and attachment bolts.  The most popular metal for inserts is aluminum, because it doesn’t rust. Steel inserts are generally used only for applications requiring a high torque on mounting bolts.