Wholesale BMC SB 25-60 Series Insulators: The Smart Choice for Power Systems Companies, Products

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Wholesale BMC SB 25-60 Series Insulators: The Smart Choice for Power Systems Companies, Products

The SB series busbar insulators feature a distinctive design, combining a hexagonal prism at the top with a cylindrical base. This unique structure simplifies the installation process, enabling easy use of a clamping wrench.

These high-quality insulators are extensively used in a range of emerging energy sectors, such as battery packs for new energy vehicles, energy storage systems, and solar inverter systems. With varying installation conditions, customers require insulators that excel in high-temperature resistance, moisture resistance, and long-lasting durability.

To meet these demanding needs, we ensure that our products undergo comprehensive reliability testing, providing detailed performance reports that guarantee the SB series busbar insulators will consistently perform under real-world conditions. We are dedicated to offering solutions that exceed industry expectations, delivering reliable and long-term performance for your energy applications.

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Product Description

BMC SB 25-60 Series Insulators: Product Overview

The SB series standoff insulators are pivotal in cutting-edge energy sectors, including battery packs for new-energy vehicles, energy storage systems, and photovoltaic inverters.

In new-energy vehicle battery packs, these insulators ensure the safe isolation of circuits, effectively preventing current leakage and maintaining the stable operation of the entire battery system.

Within energy storage systems, the SB series busbar insulators provide robust support, enabling stable performance in complex electrical environments.

As core components of photovoltaic inverters, which convert direct current into alternating current, the SB series low-to-medium voltage insulators effectively isolate circuits, prevent current interference and leakage, and withstand high-temperature conditions. This ensures efficient conversion and stable operation of photovoltaic inverters.

Recognizing the diverse and challenging installation environments faced by our customers—such as outdoor settings with high temperatures and humidity, like photovoltaic power stations in desert regions—we understand the critical need for insulators that offer exceptional high-temperature resistance, moisture resistance, and durability.

Targeted Reliability & Environmental Tests

To meet these stringent requirements, a comprehensive and scientific quality inspection system conducts targeted reliability tests based on specific performance needs:

Long-Term Operation Tests in High-Temperature Environments: Insulators are placed in high-temperature test chambers with varying gradients and durations to monitor insulation resistance and dielectric constant stability.

Simulated Humidity Environment Tests: Utilizing professional humidity test equipment to observe surface conditions and electrical performance under controlled environmental humidity levels.

Durability & Mechanical Impact Tests: Simulating current shocks and mechanical vibrations encountered during actual use to evaluate long-term structural and electrical performance stability.

Technical Specifications & Parameters

Product Features (Technical Data)	Meet ROHS 2.0 environmental requirements. Colors, inserts, and materials can be customized.
Type	SB Series (SB-type hexagonal support standoff insulators)
Product Height	25 - 100 mm
Product Diameter	25 - 60 mm
Thread Size	M6 - M12
Insert Material	Brass, Steel (Stainless steel / Aluminum optional)
Raw Material	Unsaturated Polyester Resin (BMC / DMC)
MOQ	100 pcs
Working Temperature	-40℃ to +140℃
Flame Retardant Grade	UL94 V0 (3mm)
Glow Wire Temperature	960℃
Operating Voltage (AC)	800V - 4000V
Operating Voltage (DC)	1100V - 5600V
Test Items	Low/High temperature test, pressure resistance, torque strength, tension, bending force, insulation resistance, ROHS, flame retardancy
Certificates	CE, REACH, ELV, SGS
Quality System	ISO9001, ISO14001, IATF16949

Production Workshop

Product Certification

Certified for international standards: UL, CE, ROHS, REACH, IATF16949, ISO9001, ISO14001, PSCR

IATF16949

ISO9001

ISO14001

PSCR

ROHS

REACH

Packaging & Logistics

Application Cases

Product Selection Guidelines

1. Insert conventional materials: copper and iron. Stainless steel and aluminum inserts can be customized.

2. Type 2-4 screw length can be customized for non-conventional requirements.

3. Items listed are standard sizes; custom heights are available upon request.

4. "BD" in tables refers to Bore Depth; customizable based on specific requirements.

5. "Tightening torque" indicates standard installation torque; customizable for higher torque demands.

6. Nominal voltage follows IEC 60355 standard; custom higher voltage ratings are available.

7. Actual performance parameters, dimensional tolerances, and appearance colors are subject to final drawings.

SB 25 Series Specification

Type	Thread Size	Insert Material	BD (mm)	Tightening Torque (N.m)	Height (H) mm	Nominal Voltage (AC/DC)
SB2025	M6	Brass	≥6	5	20	800 / 1100V
	M6	Steel	≥6	8
	M8	Brass	≥6	8
	M8	Steel	≥6	10
SB2525	M6	Brass	≥8	5	25	1000 / 1400V
	M6	Steel	≥8	10
	M8	Brass	≥8	8
	M8	Steel	≥8	12
SB3025	M6	Brass	≥10	6	30	1200 / 1600V
	M6	Steel	≥10	10
	M8	Brass	≥10	8
	M8	Steel	≥10	12
SB3525	M6	Brass	≥10	5	35	1400 / 1900V
	M6	Steel	≥10	10
	M8	Brass	≥10	10
	M8	Steel	≥10	15
SB4025	M6	Brass	≥10	5	40	1600 / 2200V
	M6	Steel	≥10	10
	M8	Brass	≥10	10
	M8	Steel	≥10	15

SB 30 Series Specification

Type	Thread Size	Insert Material	BD (mm)	Tightening Torque (N.m)	Height (H) mm	Nominal Voltage (AC/DC)
SB2530	M6	Brass	≥8	5	25	1000 / 1400V
	M6	Steel	≥8	10
	M8	Brass	≥8	8
	M8	Steel	≥8	12
SB3030	M6	Brass	≥10	6	30	1200 / 1600V
	M6	Steel	≥10	10
	M8	Brass	≥10	8
	M8	Steel	≥10	12
SB4030	M6	Brass	≥10	5	40	1600 / 2200V
	M6	Steel	≥10	10
	M8	Brass	≥10	10
	M8	Steel	≥10	15

SB 40 Series Specification

Type	Thread Size	Insert Material	BD (mm)	Tightening Torque (N.m)	Height (H) mm	Nominal Voltage (AC/DC)
SB3040	M8	Brass	≥10	10	30	1200 / 1600V
	M8	Steel	≥10	20
	M10	Brass	≥10	20
	M10	Steel	≥10	30
SB4040	M8	Brass	≥12	10	40	1600 / 2200V
	M8	Steel	≥12	20
	M10	Brass	≥12	20
	M10	Steel	≥12	30
	M12	Brass	≥12	30
	M12	Steel	≥12	40

SB 50 & SB 60 Series Specification

Type	Thread Size	Insert Material	BD (mm)	Tightening Torque (N.m)	Height (H) mm	Nominal Voltage (AC/DC)
SB5050	M10	Brass	≥12	20	50	2000 / 2800V
	M10	Steel	≥12	30
	M12	Brass	≥12	30
	M12	Steel	≥12	40
SB6060	M10	Brass	≥12	20	60	2400 / 3300V
	M10	Steel	≥12	30
	M12	Brass	≥12	30
	M12	Steel	≥12	40

Demonstration Video

Frequently Asked Questions (FAQ)

Q1 What material is used for the BMC SB series insulators?

The SB series standoff insulators are manufactured using high-grade unsaturated polyester resin (BMC/DMC material) with threaded inserts made of brass or steel (customizable to stainless steel or aluminum).

Q2 What working temperature range can these standoff insulators tolerate?

The SB series insulators are designed for harsh operating environments, featuring an operating temperature rating from -40℃ up to +140℃ and a glow wire temperature resistance up to 960℃.

Q3 Can thread sizes, insert depth, and insulator heights be customized?

Yes, standard products range from 25mm to 100mm in height and M6 to M12 thread sizes. Custom heights, bore depths (BD), insert metals, and specialized colors can be engineered to your exact specifications.

Q4 What applications are SB series busbar insulators best suited for?

They are specifically engineered for new-energy vehicle (NEV) battery packs, commercial energy storage systems (ESS), photovoltaic (PV) solar inverters, and medium-to-low voltage power distribution cabinets.

Q5 What electrical safety and flame-retardant standards do they meet?

The insulators meet the UL94 V0 flammability standard (at 3mm thickness) and conform to ROHS 2.0, CE, REACH, and ELV requirements, holding ISO9001 and IATF16949 quality system compliance.

Q6 How is product reliability verified prior to shipment?

Every batch undergoes comprehensive testing including high/low temperature operation, humidity exposure, insulation resistance, dielectric strength, bending/tension force, and mechanical torque limits.

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