GE AKR Breaker Replacement: ABB Emax 2 and EntelliGuard Retrofill Guide

If you're holding a GE AKR breaker that's failed, or you're maintaining switchgear built around AK, AKR, Power Break, or WavePro breakers, you've probably found that a direct replacement is not always easy to source. This GE AKR breaker replacement guide explains the practical replacement paths: source an original AK/AKR breaker from stock, upgrade the trip unit, use an ABB EntelliGuard R retrofill, or move to an ABB Emax 2 retrofill solution. We stock and cross-reference circuit breakers in all four conditions, so whichever route fits your job, we can help source it.

For immediate availability, start with the Circuit Breakers category and check any matching GE AKR, AK, Power Break, or WavePro product pages where inventory exists.

Why GE AK and AKR breakers are hard to replace

GE AK and AKR breakers were used in low-voltage switch-gear and switchboards for decades. Many of these breakers are still in service in plants, hospitals, utilities, manufacturing facilities, commercial buildings, and institutional sites.

The issue is not always that the gear has failed. Often, the switch-gear structure is still useful, but one breaker, trip unit, or protective device needs replacement. That is where the job becomes specific. You are not just matching amps. You are matching the breaker family, frame, trip unit, racking style, compartment, accessories, wiring, and available fault-current requirements.

For a plant engineer or maintenance team, the practical question is simple: do you keep the original switch-gear and replace the breaker, modernize the breaker inside the existing compartment, or source the exact obsolete original from inventory?

GE AKR breaker replacement and retrofill options

A GE AKR replacement is not a one-size-fits-all part number. The right path depends on the existing breaker, the switch-gear compartment, the trip unit, and how much modernization you want to do. 

" A cross-reference is a starting point, not an approval. Physical fit does not equal code, UL, or AHJ acceptance. Always confirm the exact rating and installation against the equipment nameplate and your local Authority Having Jurisdiction before energizing. "

For product-level sourcing, start with the Circuit Breakers category, then confirm any matching GE AK / AKR or Power Break product page against the full nameplate.

Original replacement vs retrofill: which path makes sense?

There are three practical ways to solve a failed GE AKR breaker.

Source the original AK/AKR breaker

This is the simplest path when the customer wants to keep the installation identical. If the same breaker is available as new-surplus, used, reconditioned, or obsolete inventory, the facility may avoid switch-gear changes, compartment changes, and redesign work.

This path works best when documentation, plant standards, or downtime limitations make an exact replacement the cleanest option.

Upgrade through a retrofill breaker

A retrofill lets you update the breaker while keeping much of the existing switch-gear structure. Instead of replacing the full lineup, the replacement breaker is engineered to work inside the existing equipment arrangement.

This path works best when the existing gear is still in good condition, but the breaker technology is outdated or difficult to maintain.

Upgrade the trip unit

Sometimes the problem is not the whole breaker. If the breaker is mechanically sound but the protection package is outdated, a trip-unit conversion may be the better route.

This path works best when the facility wants better protection, better coordination, or easier maintenance without replacing the full breaker or switch-gear.

A frame match isn't a part number — confirm these five things

The replacement path tells you which product family to look at. To land on the correct part number, match these five details:

• Exact breaker family and frame. AK, AKR, Power Break, WavePro, and EntelliGuard are not the same family. Start with the full nameplate.
• Ampere rating and voltage. Confirm the continuous current rating and system voltage before selecting the replacement.
• Interrupting rating. Match or exceed the available fault current at the system voltage. Never step down on interrupting performance.
• Trip unit and protection functions. RMS9, MicroVersaTrip, Power+, EntelliGuard TU, and Ekip-based options behave differently. Match the protection requirement, not just the breaker shell.
• Mounting, racking, wiring, and accessories. Drawout style, cubicle fit, secondary disconnects, shunt trips, auxiliary contacts, undervoltage releases, key interlocks, and communication options all matter.

Miss any one of these and the breaker may physically install but fail the job requirement. If you'd rather not chase all five, send us the breaker nameplate and compartment details and we'll help identify the right replacement path.

During this check, compare the nameplate against available circuit breaker inventory and any matching GE AKR, AK, Power Break, or WavePro product pages.

When to choose ABB Emax 2 retrofill

ABB Emax 2 retrofill is usually the modernization route. It is designed for customers who want newer breaker technology while keeping existing low-voltage switchgear or switchboard structures where possible.

This may make sense when:

• The original AK/AKR breaker is no longer economical to maintain
• The facility wants updated protection features
• The switchgear structure is still in usable condition
• The customer wants to reduce downtime compared with full gear replacement
• The site needs a planned modernization path across multiple breakers

Emax 2 retrofill is not the same as buying a loose breaker and sliding it into an old compartment. The exact retrofill approach depends on the switch-gear, breaker type, cradle, wiring, and engineered kit requirements.

When to choose EntelliGuard R retrofill

EntelliGuard R retrofill is another common path for legacy GE low-voltage breaker modernization. It is built for facilities that want to update older GE breaker families while keeping the existing switchgear lineup in service.

This path can be useful for AK/AKR, Power Break, and WavePro replacement projects where the customer wants a breaker solution designed around existing gear.

For maintenance teams, the value is simple: keep the switch-gear structure, modernize the breaker, and avoid turning one failed breaker into a full lineup replacement.

When to source an original GE AKR breaker

A retrofill is not always the best answer. Many facilities still prefer to source the original GE AKR breaker because it keeps the job simple.

An original breaker may be the better option when:

• The customer needs a fast replacement
• The facility wants to keep the existing design unchanged
• The gear is standardized around AK/AKR breakers
• The job has limited outage time
• The budget does not support a full modernization project
• The customer needs a matching spare for an existing lineup

JW Electrical Supply can help source original GE AK, AKR, Power Break, and related obsolete breakers when inventory is available.

How to read your GE AKR nameplate

Start with the nameplate. Do not rely on appearance alone.

Look for:

• Breaker family
• Frame size
• Ampere rating
• Voltage rating
• Interrupting rating
• Trip unit type
• Drawout or fixed configuration
• Control voltage
• Accessory details
• Catalog number or legacy part number

If the label is worn, painted, or missing, take clear photos of the breaker front, side label, trip unit, secondary disconnect area, racking mechanism, and switch-gear compartment. These details help identify the correct replacement.

If your goal is to keep the original installation unchanged, check available GE AK / AKR, Power Break, and low-voltage power circuit breaker inventory before choosing a retrofill path.

Get an exact GE AKR replacement path, same day

Have a GE AKR, AK, Power Break, or WavePro breaker to replace? Send us the catalog number, nameplate photo, or compartment details and we'll help identify the correct replacement path — original breaker, new-surplus breaker, used breaker, trip-unit conversion, EntelliGuard R retrofill, or ABB Emax 2 retrofill.

Browse circuit breakers in stock or send us your part number for a quote.

Frequently asked questions