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DOWE MC B Series Mica Insulators for Railway & High-Speed Train Electrical Systems

Mica ceramic insulators are high-performance, fully inorganic, non-metallic insulating components. By combining the durability of ceramics with the versatility of plastics, they offer several key adva

Model:
B
Operating Temperature:
300°C
Withstand Voltage Level:
12KV-35KV(1min)
Tensile Strength:
8KN-70KN
Screw:
M6/M8/M10/M12/M14/M16
Material:
MICA
Torgue strength:
12N·m-200N·m

Mica ceramic insulators are high-performance, fully inorganic, non-metallic insulating components. By combining the durability of ceramics with the versatility of plastics, they offer several key advantages:

  • Exceptional Reliability & Longevity – Stable operation under various environmental conditions.
  • Flame-Resistant & High-Temperature Tolerance – Can withstand temperatures exceeding 300°C without combustion.
  • Superior Chemical Resistance – Excellent resistance to acid and alkali corrosion, ensuring long-term stability.
  • Outstanding Electrical & Mechanical Strength – High voltage resistance, strong insulation properties, and superior mechanical durability.
  • Low Dielectric Loss – Enhances efficiency and performance in electrical applications.

Applications

Due to their superior insulating properties and durability, mica ceramic insulators are widely used in:

  • Aerospace & Aviation – Reliable insulation in extreme conditions.
  • Chemical & Metallurgical Industries – Resistance to corrosive environments.
  • Machinery & Petroleum Sectors – High mechanical strength for industrial applications.
  • Energy & Transportation – Stable performance in power generation and electrical systems.
  • Electronics & Electrical Engineering – Ideal for high-voltage and precision insulation.

Classification of Mica Insulators

Mica insulators are categorized into five main series based on their structural features:

  • A Series – Both ends feature metal inserts in the form of studs.
  • B Series – Both ends have metal inserts with threaded holes.
  • C Series – One end has a stud, while the other has a threaded hole.
  • D Series – A single metal insert in the form of a stud at one end.
  • S Series – Helical-shaped design with threaded hole inserts at both ends.

Custom Non-Standard Solutions

In addition to standard models, we offer customized mica insulator solutions tailored to specific application needs. Our engineering team can design and manufacture non-standard insulators with customized:

  • Shapes and Dimensions – Adapting to unique installation requirements.
  • Metal Insert Configurations – Studs, threaded holes, or other specialized fittings.
  • Material Combinations – Optimized for high voltage, extreme temperatures, or specific environmental conditions.

With extensive experience in custom insulation solutions, we provide rapid prototyping, small-batch production, and large-scale manufacturing, ensuring high-quality, cost-effective, and reliable products for diverse industrial applications.

Contact us to discuss your custom mica insulator requirements!

H: Insulator height (mm)
D: Maximum insulator diameter (mm)
M×L: Stud size – M (stud diameter) × L (stud height) (mm)
m×d: Threaded hole size – m (hole diameter) × d (hole depth) (mm)

Type Dimension Electrical property Mechanical property Weight
Dimensions(mm) Dimension of inserts(mm) Arc-over vlotage
(KV)
Breakdown voltage
(KV)
Endure voltage
[KV(1min)]
Insulation resistance
(MΩ)
Tensile strength
(KN)
Compressive strength
(KN)
End flexural strength
(KN)
Torsion resistance
(N·m)
g
H D M1xL1 M2xL2
MC2530B1 25 30 6x6 6x6 13 16 12 106 8 25 1.6 12 50
MC2530B1 25 30 6x6 6x8.5 13 16 12 106 8 25 1.6 12 50
MC3030B1 30 30 8x7 8x7 18 20 16 106 5 30 1.6 15 60
MC3535B1 35 35 8x8.5 8x8.5 18 20 16 106 9 35 1.6 30 90
MC3535B2 35 35 10x8.5 10x8.5 18 20 16 106 9 35 1.6 30 90
MC3535B3 35 35 6x8.5 6x8.5 18 20 16 106 8 25 1.6 12 90
MC3535B4 35 35 8x8 5x8 18 20 16 106 9 35 1.6 30 90
MC3535B5 35 35 8x8.5 10x8.5 18 20 16 106 9 35 1.6 30 90
MC3535B6 35 35 8x8.5 6x8.5 18 20 16 106 8 35 1.6 30 90
MC4450B1 44 50 10x12 10x12 26 30 22 106 19 40 4 45 160
MC4450B2 44 50 8x12 8x12 26 30 22 106 19 40 4 45 160
MC4535B1 45 35 8x10.5 8x10.5 18 20 16 106 9 35 1.6 30 125
MC5050B1 50 50 10x12 10x12 26 30 22 106 19 40 4 45 200
MC5050B2 50 50 12x12 12x12 26 30 22 106 19 40 4 45 205
MC5050B3 50 50 8x14 8x14 26 30 22 106 19 40 4 45 200
MC5050B4 50 50 10x12 (10*1.0)x12 26 30 22 106 19 40 4 45 210
MC5050B5 50 50 8x12 10x16 26 30 22 106 19 40 4 45 205
MC5065B1 50 65 12x12 12x12 26 30 22 106 17 50 6 100 235
MC6060B1 60 60 16x16 16x16 30 35 27 106 28 50 7 140 355
MC6060B2 60 60 10x16 10x16 30 35 27 106 28 50 7 90 380
MC6060B3 60 60 14x16 14x16 30 35 27 106 28 50 7 140 370
MC6060B4 60 60 10x16 (12*1.5)x16 30 35 27 106 28 50 7 140 365
MC6065B1 60 65 16x16 16x16 30 35 27 106 28 50 7 140 280
MCA0A0B1 100 100 16x22 16x22 38 50 35 106 70 100 18 200 1700

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