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BMC Standoff Insulator-SM
Electrical Grade BMC Insulator for Switchgear, Busbar and Power Distribution Systems
Material: Electrical Grade BMC
Process: Compression Molding / Injection Molding
Application: Switchgear / Busbar / Electrical Equipment
Flame Rating: UL 94 V-0 Available
CTI: High CTI Formulation Available
Insert: Brass / Steel / Stainless Steel
Custom: Size / Color / Thread / Material
| Model | Height | Diameter / Size | Thread | Tensile Strength | Withstand Voltage | Torque Strength | Screw Depth |
|---|---|---|---|---|---|---|---|
| SM-20 | 20 mm | 17 mm | M5 | 300 LBS | 5 kV | 4 FT·LBS | 7 mm |
| SM-25 | 25 mm | 30 mm | M6 | 500 LBS | 6 kV | 6 FT·LBS | 9 mm |
| SM-30 | 30 mm | 32 mm | M8 | 550 LBS | 8 kV | 8 FT·LBS | 11 mm |
| SM-35 | 35 mm | 32 mm | M8 | 600 LBS | 10 kV | 10 FT·LBS | 11 mm |
| SM-40 | 40 mm | 40 mm | M8 | 650 LBS | 12 kV | 12 FT·LBS | 11 mm |
| SM-45 | 45 mm | 36 mm | M8 | 1000 LBS | 14 kV | 20 FT·LBS | 11 mm |
| SM-51 | 51 mm | 36 mm | M8 | 1000 LBS | 14 kV | 20 FT·LBS | 11 mm |
| SM-60 | 60 mm | 46 mm | M10 | 1200 LBS | 20 kV | 35 FT·LBS | 15 mm |
| SM-76 | 76 mm | 50 mm | M10 | 1000 LBS | 25 kV | 40 FT·LBS | 20 mm |
| SM-80 | 80 mm | 50 mm | M10 | 1500 LBS | 25 kV | 40 FT·LBS | 20 mm |
Certifications & Standards
IEC 60112 / IEC 60243 / UL 94 / RoHS / REACH
BMC Standoff Insulator-TSM
Electrical Grade BMC Insulator for Switchgear, Busbar and Power Distribution Systems
Material: Electrical Grade BMC
Process: Compression Molding / Injection Molding
Application: Switchgear / Busbar / Electrical Equipment
Flame Rating: UL 94 V-0 Available
CTI: High CTI Formulation Available
Insert: Brass / Steel / Stainless Steel
Custom: Size / Color / Thread / Material
| Model | Height | Max. Outside Size | Thread | Tensile Strength | Withstand Voltage | Torque Strength | Screw Depth |
|---|---|---|---|---|---|---|---|
| TSM-20 | 20 mm | 21 mm | M5 | 300 LBS | 4 kV | 4 FT·LBS | 7 mm |
| TSM-30 | 30 mm | 30 mm | M6 | 500 LBS | 8 kV | 8 FT·LBS | 10 mm |
| TSM-402 | 40 mm | 35 mm | M6 | 500 LBS | 8 kV | 10 FT·LBS | 13 mm |
| TSM-401 | 40 mm | 40 mm | M8 | 700 LBS | 8 kV | 20 FT·LBS | 13 mm |
| TSM-40 | 40 mm | 50 mm | M10 | 1000 LBS | 8 kV | 30 FT·LBS | 14 mm |
| TSM-50 | 50 mm | 51 mm | M10 | 1500 LBS | 15 kV | 40 FT·LBS | 17 mm |
| TSM-55 | 55 mm | 60 mm | M10 | 2000 LBS | 15 kV | 50 FT·LBS | 17 mm |
| TSM-70 | 70 mm | 55 mm | M10 | 1500 LBS | 25 kV | 40 FT·LBS | 17 mm |
Certifications & Standards
IEC 60112 / IEC 60243 / UL 94 / RoHS / REACH
BMC Standoff Insulator-SEP1615-3541
Electrical Grade BMC Insulator for Switchgear, Busbar and Power Distribution Systems
Material: Electrical Grade BMC
Process: Compression Molding / Injection Molding
Application: Switchgear / Busbar / Electrical Equipment
Flame Rating: UL 94 V-0 Available
CTI: High CTI Formulation Available
Insert: Brass / Steel / Stainless Steel
Custom: Size / Color / Thread / Material
| Model | Height | Max. Outside Size | Thread | Tensile Strength | Withstand Voltage | Torque Strength | Screw Depth |
|---|---|---|---|---|---|---|---|
| SEP-1615 | 16 mm | 15 mm | M4 / M5 | 300 LBS | 4 kV | 3 / 3 FT·LBS | 4 / 4 mm |
| SEP-2019 | 20 mm | 19 mm | M4 / M5 / M6 | 400 LBS | 7 kV | 3 / 6 / 10 FT·LBS | 6 / 6 / 6 mm |
| SEP-2519 | 25 mm | 19 mm | M5 / M6 | 400 LBS | 8.5 kV | 6 / 8 FT·LBS | 6 / 6 mm |
| SEP-2522 | 25 mm | 22 mm | M4 / M5 / M6 | 500 LBS | 8.5 kV | 3 / 6 / 10 FT·LBS | 7 / 7 / 7 mm |
| SEP-2525 | 25 mm | 25 mm | M8 | 550 LBS | 8.5 kV | 10 FT·LBS | 9 mm |
| SEP-3030 | 30 mm | 30 mm | M6 / M8 / M10 | 600 LBS | 11 kV | 10 / 20 / 20 FT·LBS | 9 / 9 / 9 mm |
| SEP-3040 | 30 mm | 40 mm | M8 / M10 | 700 LBS | 11 kV | 30 / 40 FT·LBS | 9 / 9 mm |
| SEP-3532 | 35 mm | 32 mm | M6 / M8 / M10 | 650 LBS | 12.5 kV | 10 / 25 / 40 FT·LBS | 9 / 10 / 10 mm |
| SEP-3540 | 35 mm | 40 mm | M8 / M10 | 700 LBS | 12.5 kV | 25 / 50 FT·LBS | 10 / 10 mm |
| SEP-3541 | 35 mm | 41 mm | M6 / M8 / M10 | 700 LBS | 12.5 kV | 10 / 25 / 50 FT·LBS | 9 / 10 / 10 mm |
Certifications & Standards
IEC 60112 / IEC 60243 / UL 94 / RoHS / REACH
BMC Standoff Insulator-SEP4041-10065
Electrical Grade BMC Insulator for Switchgear, Busbar and Power Distribution Systems
Material: Electrical Grade BMC
Process: Compression Molding / Injection Molding
Application: Switchgear / Busbar / Electrical Equipment
Flame Rating: UL 94 V-0 Available
CTI: High CTI Formulation Available
Insert: Brass / Steel / Stainless Steel
Custom: Size / Color / Thread / Material
| Model | Height | Max. Outside Size | Thread | Tensile Strength | Withstand Voltage | Torque Strength | Screw Depth |
|---|---|---|---|---|---|---|---|
| SEP-4041 | 40 mm | 41 mm | M8 / M10 / M12 | 300 LBS | 14 kV | 25 / 50 / 85 FT·LBS | 10 / 10 / 10 mm |
| SEP-4046 | 40 mm | 46 mm | M8 / M10 / M12 | 1000 LBS | 14 kV | 25 / 50 / 85 FT·LBS | 10 / 10 / 12 mm |
| SEP-4546 | 45 mm | 46 mm | M8 / M10 / M12 | 1000 LBS | 15.5 kV | 25 / 50 / 85 FT·LBS | 15 / 15 / 15 mm |
| SEP-5036 | 50 mm | 36 mm | M6 / M8 / M10 | 900 LBS | 15.5 kV | 10 / 25 / 50 FT·LBS | 15 / 15 / 15 mm |
| SEP-5046 | 50 mm | 46 mm | M10 | 1100 LBS | 15.5 kV | 50 FT·LBS | 15 mm |
| SEP-5050 | 50 mm | 50 mm | M8 / M10 / M12 | 1500 LBS | 15.5 kV | 25 / 50 / 85 FT·LBS | 15 / 15 / 15 mm |
| SEP-6060 | 60 mm | 60 mm | M8 / M10 / M12 | 2000 LBS | 21 kV | 25 / 50 / 85 FT·LBS | 15 / 15 / 20 mm |
| SEP-6541 | 65 mm | 41 mm | M8 / M10 / M12 | 1000 LBS | 22 kV | 25 / 50 / 85 FT·LBS | 15 / 20 / 20 mm |
| SEP-7060 | 70 mm | 60 mm | M10 / M12 / M16 | 2000 LBS | 25 kV | 50 / 85 / 100 FT·LBS | 20 / 20 / 25 mm |
| SEP-7550 | 75 mm | 50 mm | M8 / M10 / M12 | 1500 LBS | 28 kV | 25 / 50 / 85 FT·LBS | 15 / 15 / 20 mm |
| SEP-8065 | 80 mm | 65 mm | M10 / M12 | 1100 LBS | 15.5 kV | 50 FT·LBS | 15 mm |
| SEP-10065 | 100 mm | 65 mm | M10 / M12 / M16 | 1500 LBS | 28 kV | 25 / 50 / 85 FT·LBS | 15 / 15 / 20 mm |
Certifications & Standards
IEC 60112 / IEC 60243 / UL 94 / RoHS / REACH
BMC Standoff Insulator-EN
Electrical Grade BMC Insulator for Switchgear, Busbar and Power Distribution Systems
Material: Electrical Grade BMC
Process: Compression Molding / Injection Molding
Application: Switchgear / Busbar / Electrical Equipment
Flame Rating: UL 94 V-0 Available
CTI: High CTI Formulation Available
Insert: Brass / Steel / Stainless Steel
Custom: Size / Color / Thread / Material
| Model | Height | Max. Outside Size | Thread | Tensile Strength | Withstand Voltage | Torque Strength | Screw Depth |
|---|---|---|---|---|---|---|---|
| U4535 | 45 mm | 45 mm | M10 / UNC 3/8-16 | 700 LBS | 6 kV | 12 FT·LBS | 12 mm |
| 7105 | 35 mm | 35 mm | M6 | 650 LBS | 8 kV | 8 FT·LBS | 10 mm |
| 7110 | 45 mm | 40 mm | M8 | 800 LBS | 10 kV | 10 FT·LBS | 12 mm |
Certifications & Standards
IEC 60112 / IEC 60243 / UL 94 / RoHS / REACH
BMC CT / CJ Series BMC Busbar Support Insulator
Electrical Grade Step Type Busbar Support Insulator for Switchgear, Busbar and Power Distribution Systems
Material: Electrical Grade BMC
Process: Compression Molding / Injection Molding
Application: Switchgear / Busbar / Electrical Equipment
Flame Rating: UL 94 V-0 Available
CTI: High CTI Formulation Available
Insert: Brass / Steel / Stainless Steel
Custom: Size / Color / Thread / Material
| Model | Length | Height | Screw / Thread | Support Type |
|---|---|---|---|---|
| CT2-15 | 50 mm | 40 mm | 4 × M6 | Step Busbar Support |
| CT2-25 | 80 mm | 60 mm | 4 × M8 | Step Busbar Support |
| CT4-20 | 100 mm | 60 mm | 4 × M6 / 2 × M8 | Step Busbar Support |
| CT4-30 | 132 mm | 130 mm | 4 × M8 | Step Busbar Support |
| CT4-40 | 164 mm | 148 mm | 4 × M8 | Step Busbar Support |
| CT4-50 | 212 mm | 200 mm | 4 × M10 | Step Busbar Support |
| CT5-25 | 135 mm | 100 mm | 5 × M6 | Multi-Step Busbar Support |
| CJ4-30 | 230 mm | 100 mm | 4 × M8 | Horizontal Busbar Support |
| CJ4-40 | 230 mm | 100 mm | 4 × M10 | Horizontal Busbar Support |
| CJ4-50 | 275 mm | 100 mm | 4 × M10 | Horizontal Busbar Support |
Certifications & Standards
IEC 60112 / IEC 60243 / UL 94 / RoHS / REACH
EL Series Insulated Busbar Holder
Electrical Grade Step Type Busbar Support Insulator for Switchgear, Busbar and Power Distribution Systems
Material: Electrical Grade BMC
Process: Compression Molding / Injection Molding
Application: Switchgear / Busbar / Electrical Equipment
Flame Rating: UL 94 V-0 Available
CTI: High CTI Formulation Available
Insert: Brass / Steel / Stainless Steel
Custom: Size / Color / Thread / Material
| Model | Overall Length | Section Size | Mounting Hole | Structure | Product Type |
|---|---|---|---|---|---|
| EL-130 | 130 mm | 35 × 35 mm | Ø12 × 2 / Ø8 × 2 | Multi-Slot | Busbar Support Insulator |
| EL-180 | 180 mm | 34 mm Max. Width | Ø9 × 2 / Ø7 × 2 | Multi-Slot | Busbar Support Insulator |
| EL-210 | 210 mm | 34 mm Max. Width | Multiple Mounting Holes | Multi-Slot | Busbar Support Insulator |
| EL-270 | 270 mm | 35 × 35 mm | Ø20 × 2 / Ø12 × 2 | Multi-Slot | Busbar Support Insulator |
| EL-295 | 295 mm | 35 × 35 mm | Ø20 × 3 / Ø11 × 3 | Multi-Slot | Busbar Support Insulator |
| EL-409 | 409 mm | Refer to Drawing | Multiple Mounting Holes | Multi-Slot | Busbar Support Insulator |
| EL-500 | 500 mm | Refer to Drawing | Multiple Mounting Holes | Long Rail Type | Busbar Support Insulator |
| EL-600 | 600 mm | Refer to Drawing | Multiple Mounting Holes | Long Rail Type | Busbar Support Insulator |
| EL-800 | 800 mm | Refer to Drawing | Multiple Mounting Holes | Long Rail Type | Busbar Support Insulator |
Certifications & Standards
IEC 60112 / IEC 60243 / UL 94 / RoHS / REACH
Applications
| Application | Function |
|---|---|
| Switchgear | Electrical isolation and conductor support |
| Busbar Systems | Mechanical support and creepage control |
| Distribution Cabinet | Insulation between energized components |
| Power Distribution Unit | Electrical isolation and mounting |
| Transformer | Structural and electrical insulation |
FAQ
What material is used for BMC electrical insulators?
These insulators are made from electrical grade BMC (Bulk Molding Compound), a thermoset composite chosen for its dielectric strength, dimensional stability, and resistance to heat and chemicals.
What is the CTI of BMC insulator material?
A high CTI (Comparative Tracking Index) formulation is available, which improves resistance to electrical tracking and makes the material suitable for high-voltage and creepage-sensitive applications.
What is a BMC busbar support insulator?
A BMC busbar support insulator is an electrically insulating component designed to support, position and separate copper or aluminum busbars inside switchgear, distribution boards, control cabinets and other electrical equipment. BMC provides a combination of electrical insulation, mechanical strength, dimensional stability and flame-retardant performance, making it suitable for demanding power distribution applications.
Where are EL Series busbar support insulators commonly used?
EL Series busbar support insulators are commonly used in low-voltage and medium-voltage switchgear, power distribution cabinets, electrical panels, inverter systems, industrial control equipment and busbar assemblies. Their multi-slot structure helps maintain consistent busbar spacing while providing mechanical support and electrical isolation between conductors and the enclosure.
How do I choose the correct busbar support insulator size?
Selection should be based on the busbar width, thickness, number of conductors, phase spacing, mounting-hole layout, available installation space and required electrical clearance. Models such as EL-130, EL-180, EL-210, EL-270, EL-295, EL-409, EL-500, EL-600 and EL-800 provide different lengths and slot configurations. For new projects, a dimensional drawing or busbar layout is recommended before final model selection.
Why is BMC used for electrical busbar supports?
Electrical-grade BMC material is widely used for busbar support components because it can provide high insulation resistance, good dielectric performance, mechanical rigidity, dimensional stability and flame-retardant properties. Compared with many conventional thermoplastics, thermoset BMC also maintains better dimensional stability under heat and mechanical loading, which is important for switchgear and electrical distribution applications.
5. Can SUSDURA customize BMC busbar support insulators?
Yes. SUSDURA can support custom BMC busbar support insulators and busbar holders according to customer drawings, busbar dimensions, mounting-hole positions, slot geometry, color, insert configuration and application requirements. Material formulation, tooling, compression molding and dimensional inspection can be coordinated within the same development process, helping customers move from drawing review and prototype validation to mass production more efficiently.
Can SUSDURA customize BMC busbar support insulators?
Yes. SUSDURA can support custom BMC busbar support insulators and busbar holders according to customer drawings, busbar dimensions, mounting-hole positions, slot geometry, color, insert configuration and application requirements. Material formulation, tooling, compression molding and dimensional inspection can be coordinated within the same development process, helping customers move from drawing review and prototype validation to mass production more efficiently.