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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.