Product Overview

The most complete line of power
and distribution insulators.

Warco engineers and manufactures transformer components that utilities, OEMs, and industrial customers have depended on since 1971. Every product is designed and tested to meet or exceed ANSI standards.

Browse Full Catalog Request a Quote
200+ Catalog Items
53+ Years USA-Made
46 KV Max Voltage Class
2-Wk Standard Lead Time
99.8% On-Time Delivery
Our Products

Electrical ceramics expertise built
over three decades of manufacturing.

Warco has manufactured electrical ceramics for over 30 years, accumulating deep expertise in porcelain formulation, production processes, and electrical testing methodologies. Every product continuously improves in performance as we expand our catalog to serve evolving utility and OEM needs.

ANSI-Exceeding Standards

All products designed and tested to meet or exceed ANSI requirements for voltage class, BIL, and dimensional compliance.

USA Manufacturing Only

Every component produced at our 65,000 sq. ft. Marthasville, Missouri facility. No offshore production or third-party assembly.

Custom Configurations

Standard catalog covers most applications. For unique requirements, Warco engineers custom configurations to your specifications.

Bushing Product Lines

Four bushing families.
One trusted source.

View Full Catalog
SEC. 01
Low Voltage Distribution Bushings
1.2 – 5 KV Class Up to 60 KV BIL

Low Voltage Distribution Bushings

Standard distribution bushings for pad-mounted, pole-mounted, and network transformers. Available in internal clamp, external clamp, and bolt-on configurations.

  • Internal & external clamp styles
  • Bolt-on and universal mount options
  • ANSI C57.12.20 compliant dimensions
  • 1.2, 2.5, and 5 KV voltage classes
17 catalog items View in Catalog
SEC. 02
High Current Bushings
1.2 – 5 KV Class Up to 60 KV BIL

High Current Bushings

Rated 600A through 2000A for high-load distribution and industrial transformers. Designed for applications where continuous current demands exceed standard bushing ratings.

  • 600A, 800A, 1200A, 1600A, 2000A ratings
  • Internal and external clamp styles
  • ANSI dimensional compliance
  • All distribution voltage classes
14 catalog items View in Catalog
SEC. 03
High Voltage Bushings
8.7 – 34.5 KV Class Up to 200 KV BIL

High Voltage Bushings

Utility substation and industrial-grade bushings in oil-filled, flanged, draw lead, extended creep, and side-entry configurations for demanding utility environments.

  • Oil-filled and dry-type constructions
  • Draw lead assembly configurations
  • Extended creep for contaminated environments
  • Flanged, side-entry, and top-entry styles
24 catalog items View in Catalog
SEC. 04
Power Class Bushings
5 – 46 KV Class Up to 250 KV BIL

Power Class Bushings

Heavy-duty power transformer bushings for generation, transmission, and large substation transformers. Factory-sealed oil-filled construction available for 46 KV class.

  • Up to 46 KV class, 250 KV BIL
  • Factory-sealed oil-filled options
  • Extended creep surge arrester compatible
  • OEM and replacement configurations
33 catalog items View in Catalog
Related Products & Accessories

Complete your transformer solution.

Beyond bushing product lines, Warco manufactures a full range of transformer components, protection devices, and accessories designed to work alongside our insulation products.

Replacement Porcelain

Exact-fit replacements for ABB, GE, Westinghouse, McGraw-Edison, RTE, S&C, and Kyle equipment. Drop-in fit, no modifications.

1.2 – 46 KV

Recloser Bushings

Replacement porcelain for Kyle, Cooper, and other recloser assemblies. Exact dimensional match to OEM specifications.

15 – 25 KV

Weak Link Fuse

Distribution system overcurrent protection. Current-limiting fuse links for transformer and feeder protection applications.

Distribution class

Tap Changers

De-energized tap changer components for voltage regulation in distribution transformers. Standard and custom configurations.

All classes

Wildlife Protection

Covers, barriers, and line guards for exposed energized conductors and equipment. Reduces outages from wildlife contact.

≤ 25 KV

Connectors & Accessories

Copper and aluminum connectors, ground leads, and transformer accessories. Copper and tin plated options available.

All classes
Machinery & Equipment

Transformer manufacturing equipment.

In addition to transformer components, Warco designs and manufactures specialized equipment for the transformer production industry. Contact us for specifications and availability.

Inquire About Equipment

  • Paper Slitting & Cuffing Equipment

    Precision slitting machines for transformer insulation paper stock.

  • Coil Winding Machinery

    Automated and semi-automated winding equipment for transformer coil production.

  • Core Making & Annealing Equipment

    Steel core fabrication and heat treatment equipment for transformer cores.

  • Hydraulic Horn Presses

    Specialized pressing equipment for bushing and insulator component forming.

  • Transformer De-commissioning Equipment

    Oil drainage and component recovery systems for end-of-life transformer processing.

Ready to Source?

Browse the full product catalog.

200+ transformer components with engineering drawings. Standard items ship within two weeks.

Open Product Catalog Request a Quote