Toughened Glass Suspension Insulators (40kN – 420kN)
This high-voltage toughened glass suspension insulator is engineered for 10kV to 750kV overhead power line services. It features superior anti-pollution performance, aging resistance, anti-tracking, and high dielectric withstand strength to prevent electrical erosion. Built with high mechanical strength ranging from 40kN to 420kN, it delivers outstanding tensile/bending resistance, shock absorption, and earthquake proofing while incorporating a unique self-shattering design for instant failure detection. Featuring a lightweight, compact structure and standard IEC/ANSI coupling dimensions, it allows easy installation. Materlal: glass
Description
Baoding Sihedan Electric Technology Co., Ltd. is one of the most reliable manufacturers and suppliers of toughened glass suspension insulators (40kn – 420kn) in China. With abundant experience, we warmly welcome you to buy cheap toughened glass suspension insulators (40kn – 420kn) from our factory. Quality products and low price are available.
Products Description
Introduction
DKLINE high-voltage toughened glass suspension insulators are engineered for installation on overhead transmission and distribution lines operating from 10kV to 750kV. Manufactured using high-purity silica and precise automated thermal tempering, these glass units maintain high dielectric strength and structural integrity under prolonged mechanical stress, environmental pollution, and extreme ambient temperature fluctuations.
DKLINE Glass Suspension Insulator
FEATURES
■Visual Inspection Efficiency via Tempering Properties
■Mechanical Reliability & Load Distribution
■Environmental Stability & Pollution Resistance
■Long-Term Aging Resistance
Parameters
|
Type |
Minimum mechanical faking load(KN) |
Nominal dameter D(mm) |
Spacing P(mm) |
Nominal creepage distance(mm) |
Standard oupling |
Approx net weight(kg) |
Dry,lightning impulse withsand voltage(KV) |
Punctrue withstand voltage(KV) |
|
U40B |
40 |
175 |
110 |
190 |
11 |
2.0 |
75 |
90 |
|
U70BS |
70 |
255 |
127 |
320 |
16 |
3.8 |
100 |
130 |
|
U70BL |
70 |
255 |
146 |
320 |
16 |
3.85 |
100 |
130 |
|
U100BL |
100 |
255 |
146 |
320 |
16 |
4.2 |
100 |
130 |
|
U120B |
120 |
255 |
146 |
320 |
16 |
4.3 |
100 |
130 |
|
U160BS |
160 |
280 |
146 |
400 |
20 |
6.3 |
110 |
130 |
|
U160BM |
160 |
280 |
155 |
400 |
20 |
6.4 |
125 |
130 |
|
U210B |
210 |
280 |
170 |
400 |
20 |
6.7 |
110 |
130 |
|
U240B |
240 |
280 |
170 |
400 |
20 |
7.0 |
110 |
130 |
|
U300B |
300 |
330 |
195 |
490 |
24 |
7.5 |
110 |
130 |
|
U420B |
420 |
380 |
205 |
550 |
24 |
10.7 |
130 |
130 |
Products Overview

Characteristics
Featuring a versatile mechanical load rating up to 420kN, this glass suspension insulator boasts an optimized high-strength design compared to conventional porcelain solutions, significantly reducing line string weight and tower loading. The insulator body is constructed from high-purity, heat-toughened glass with an automated tempering layer, paired with hot-dip galvanized malleable iron caps (per ISO 1461) and a puncture withstand voltage ≥130kV, ensuring exceptional dielectric integrity and thermal shock immunity from -40°C to +50°C.
This product is highly suitable for high-voltage transmission lines (10kV to 750kV) operating in demanding environments, including coastal, desert, and high-altitude grid networks. Where rapid field maintenance and low lifetime operating costs are required, its toughened glass self-shattering property provides a far more efficient solution than composite insulators-damaged units auto-disintegrate for instant ground-level visual inspection without needing specialized diagnostic equipment or power shut-offs.
About Us

Baoding Sihedan Electric Technology Co., Ltd.
Founded by two industry experts with over 20 years of experience, Sihedan Electric Technology Co., Ltd. was established to advance power system development and transmission & distribution line solutions. Soon after, we launched our comprehensive portfolio-spanning high-voltage switchgear, advanced insulation systems, line fittings, and grid protection-establishing a recognized benchmark for reliability across the global energy sector. Having executed projects in over 50 countries, we have built strong, stable partnerships with clients around the globe, including in Kenya, Morocco, Egypt, and beyond.
Frequently Asked Questions
Q: What is the MOQ?
A: There are no MOQ limit in first order, and 100pcs in further.
Q: Samples providing?
A: We are providing the samples by free, but need pay for the freight charge.
Q: EPC material design and provide in lot?
A: Yes, we are supplying for LV and MV EPC material in lot many years.and have strong design team.
Q: Complete documents for tender?
A: Yes, whole set documents ready for submit.
Hot Tags: toughened glass suspension insulators (40kn – 420kn), China toughened glass suspension insulators (40kn – 420kn) manufacturers, suppliers, factory
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