Wall Bushing
. Solution

Secure Power Transit with
Epoxy Wall Bushings

Engineered for KYN28 switchgear compartments. Featuring internal shielding screens for optimal electric field control and superior bending strength up to 12.5kN.

Wall Bushing Tags

Product Category

35KV Wall Bushing Shielding 260×260×450 - TG3-35KV High-Voltage 3150-5000A IP68 Durability

35KV Wall Bushing Shielding 260×260×450 – TG3-35KV High-Voltage 3150-5000A IP68 Durability

35KV Wall Bushing Shielding 220×220×450 - TG3-35KV Optimized 2500-4000A IP68 Resilient

35KV Wall Bushing Shielding 220×220×450 – TG3-35KV Optimized 2500-4000A IP68 Resilient

35KV Wall Bushing Shielding 260×260×395 - TG3-35KV Heavy-Duty 3150-5000A IP68 Extreme

35KV Wall Bushing Shielding 260×260×395 – TG3-35KV Heavy-Duty 3150-5000A IP68 Extreme

24KV Wall Bushing Shielding 190×190×330 - TG3-24KV High-Performance 2500-5000A IP67

24KV Wall Bushing Shielding 190×190×330 – TG3-24KV High-Performance 2500-5000A IP67

24KV Wall Bushing 175×255×310 - TG3-24KV Heavy-Duty 2500-5000A IP68 Extreme

24KV Wall Bushing 175×255×310 – TG3-24KV Heavy-Duty 2500-5000A IP68 Extreme

24KV Wall Bushing 175×255×218 - TG3-24KV High-Voltage 2000-4000A IP68 Industrial

24KV Wall Bushing 175×255×218 – TG3-24KV High-Voltage 2000-4000A IP68 Industrial

12KV Wall Bushing 130×210 - TG3-12KV High-Voltage 2000-3150A IP68 Durable

12KV Wall Bushing 130×210 – TG3-12KV High-Voltage 2000-3150A IP68 Durable

12KV Wall Bushing 140×200 - TG3-12KV High-Current 2500-3150A IP68 Composite

12KV Wall Bushing 140×200 – TG3-12KV High-Current 2500-3150A IP68 Composite

12KV Wall Bushing 110×180×230 - TG3-12KV Composite Shielding 2500-3150A

12KV Wall Bushing 110×180×230 – TG3-12KV Composite Shielding 2500-3150A

12KV Wall Bushing 110×180 - TG3-12KV Hydrophobic Silicone 1600-2000A

12KV Wall Bushing 110×180 – TG3-12KV Hydrophobic Silicone 1600-2000A

Internal Electric Field Shielding

The critical challenge in wall bushings is the concentration of the electric field where the bushing passes through the grounded metal partition.

Embedded Mesh

A conductive screen equalizes potential distribution.

Zero Partial Discharge

Prevents corona and breakdown at the flange interface.

A photograph showing a red epoxy ribbed wall bushing installed through a metal partition. Inside the bushing, a glowing blue mesh and electric field lines illustrate 'INTERNAL ELECTRIC FIELD SHIELDING'. Text labels 'INTERNAL ELECTRIC FIELD SHIELDING' and 'ZERO PARTIAL DISCHARGE' (with an arrow pointing to the shielded area) are overlaid on the image, highlighting its technical features.
A technical illustration shows a red, ribbed APG epoxy bushing with a square flange mounted on a metal partition within an electrical switchgear cabinet. A copper busbar passes through the bushing. A magnifying glass callout highlights the bushing's material as "APG TECHNOLOGY: VOID-FREE EPOXY". A glowing blue arrow indicates "ELECTRODYNAMIC FORCES" acting on the busbar, and orange text with a glow reads "HIGH MECHANICAL BENDING LOAD" along the busbar. A gauge in the upper right displays "RATED STRENGTH: 12.5kN". A ground symbol is at the bottom left. The background shows various circuit breakers and wiring in the cabinet.

High Mechanical Bending Load

Short-circuit currents generate massive electrodynamic forces on busbars. Our bushings serve as the primary mechanical anchor between compartments.

Class-Leading Strength

Rated from 4kN up to 12.5kN bending load.

APG Technology

Void-free epoxy resin ensures structural integrity under stress.

Technical Specifications

Standard: IEC 60137 | Material: Epoxy Resin
Characteristics Unit 12kV Series 24kV Series 40.5kV Series
Rated Voltage kV 12 24 40.5
PF Withstand Voltage (1min) kV 42 65 95
Lightning Impulse (BIL) kV 75 125 185
Bending Failure Load kN 4 / 8 / 12.5 4 / 8 / 12.5 4 / 8
Rated Current A 630-4000 630-3150 1250-2500

Installation FAQ

We have molds for standard busbar sizes (e.g., 60x10, 80x10, 100x10, 120x10). For non-standard sizes, we can customize the aperture window.

Yes, the bushing comes pre-assembled with a metal mounting plate (Steel or Aluminum) with grounding terminals.

For rated currents >1500A, we strongly recommend Aluminum (non-magnetic) plates to prevent eddy current heating. Below 1500A, Steel is sufficient and cost-effective.

Need a Custom Fit?

Don’t see your busbar size? Our engineering team provides free CAD modification services.

Related Technical Insights

Latest industry news and maintenance guides for insulation components.

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