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Gauge cluster inside a JCL padmount transformer cabinet
Products

Replacement components. Every manufacturer.

Bushings, fuses, arresters, gauges, switches, tap changers, and insulating fluids for transformers — sourced across every major manufacturer.

Crated high-voltage bushing ready to ship from the JCL warehouse
Live-front & dead-front

Bushings

Connect your transformer safely to the system — matched by voltage class, current rating, BIL, mounting style, and live-front or dead-front configuration.

High-Voltage BushingsDistribution BushingsBushing WellsInserts & Feed-ThrusSecondary BushingsSpades
Quote bushings
Coordinated protection

Fuses

What clears a fault inside the transformer — matched to your protection scheme, not just the amp rating.

Request fuses
Bay-O-Net fuse holders on a padmount transformer
Bay-O-Net assemblies

Complete holder assemblies for oil-filled padmounts — hot-stick operable from the cabinet.

Replacement Bay-O-Net fuse links
Fuse links

Current-sensing and dual-sensing links — the fuse element installed inside the holder.

Loadbreak fuse cutout
CL fuses & cutouts

Under-oil and dry-well current-limiting fuses for high fault-current sites, plus overhead cutouts.

No part number? No problem.

You don’t have to know what it’s called.

Most components can be identified in minutes from two photos — no part number needed.

01Photograph the nameplate.Tank wall or cabinet door.
02Photograph the component.Installed or removed.
03Send both.Upload them or text our team.
04We identify it.Then quote the replacement — and installation if needed.
Send Two Photos
✓ Every major manufacturer✓ Current & obsolete equipment✓ Installation available
Direct replacements

Gauges & monitoring

The instruments that monitor transformer condition and operating status. Matched to your existing gauge configuration, with or without alarm contacts.

Quote gauges
Liquid level dial gauge
Liquid level
HI / LO dial
Pressure and vacuum gauge
Pressure / vacuum
PSIG both directions
Vacuum-pressure gauge with alarm contact box and wire leads
With alarm contacts
Wired to SCADA / alarms
Liquid temperature gauge with thermowell
Temperature
Top-oil & winding
Gauge cluster inside a padmount cabinet
Control box
Gauge boards & relays
Polymer surge arresters mounted on a transformer
Surge protection

Lightning arresters

Protects transformer insulation from lightning and switching surges — sized to system voltage and energy duty.

Distribution ClassIntermediate ClassStation ClassElbow (Dead-Front)
Request arresters
Cabinet to substation

Switches & tap changers

Switch, isolate, or change taps with hardware matched to your transformer — from cabinet loadbreak switches to substation air breaks.

Loadbreak SwitchesLBOR SwitchesFeed-Thru InsertsParking StandsTap ChangersGOAB Switches
Quote switching hardware
Externally operated tap changer switch, contact face visible
Fill · top-off · retrofill

Insulating fluids

Dielectric fluids in the quantity you need — pails to tankers.

NATURAL ESTERFire-safe, biodegradable; new installations and retrofills
Mineral oilType II inhibited — fill and top-off
SYNTHETIC ESTERHigh fire point, cold-climate capable
Request fluid delivery
JCL technician connecting a fluid processing hose
Need field service?

Field crews can sample, test, filter, vacuum-process, and retrofill insulating fluids on site.

Field Services

More components we supply

Beyond the components shown above, we source the parts and accessories needed to keep transformer equipment operating as intended.

Ask for a Part
Cooling
Supplemental Fans · Additional / Replacement Radiators · CPT Installation
Pressure & Valves
Relief Devices · Drain & Sampling Valves · Ports
Monitoring & Controls
Current Transformers · Relays · Control Components
Cabinet & Terminal
Doors & Hinges · Sill Hardware · Terminal Hardware
Sealing & Preservation
Gaskets & Seals · Oil Preservation Systems
Identification & Accessories
Nameplates · Protective Caps · Misc. Accessories
Components RFQ

JCL helps identify replacement parts

Send us the nameplate, a photo of the component, or details about where it's installed. We'll help identify the right replacement and quote it for you, with installation available when needed.