When Is It Time to Upgrade Your Switchgear?

Switchgear can degrade slowly, quietly, and in ways that are easy to mistake for routine maintenance problems until they aren't. You might notice a hot spot that keeps returning after retorquing, a nuisance trip with no clear cause, or a replacement part that takes weeks longer to source than it used to. Each sign looks manageable on its own, but together they mark a decision window most facilities don't recognize until it's already closing.

Knowing when to upgrade your switchgear is as much a financial and safety decision as a technical one, and that cost compounds the longer it goes unanswered. This piece lays out the diagnostic language and decision framework so you can take control.

Signs Your Switchgear Is Approaching End of Life

Determining when aging switchgear has entered end-of-life territory begins with a formal end-of-life assessment as part of a broader proactive maintenance program. A few warning signs typically show up first, such as:

• Thermal anomalies and persistent hot spots: Recurring overheating detected through infrared thermography can signal deteriorating contacts, degraded insulation, or rising resistance at connection points. Infrared thermography can help detect abnormal heat conditions before they damage electrical equipment, so hot spots that reappear after retorquing or cleaning may indicate a structural problem rather than an incidental one.

• Increased fault clearing times: As protective devices like breakers and fuses age, mechanical sluggishness, contamination, or calibration drift can delay trip response under fault conditions. Delayed fault clearing can increase arc flash incident energy, which means existing arc flash risk assessments may no longer reflect the actual hazard level your team is working under. Outdated protective devices become a direct safety liability rather than just an operational inconvenience.

• Obsolete or unavailable replacement parts: When OEM components become discontinued, the risk calculus can shift quickly. A routine parts swap can become an extended sourcing problem, so when sourcing standard components becomes unpredictable, the equipment is reaching its end of life.

• Frequent nuisance trips and unexplained faults: An uptick in nuisance tripping, unexplained fault indications, or voltage irregularities may reflect weakening internal components or compromised clearances. When thorough inspections come back clean, but symptoms persist, the problem could be systemic rather than isolated. Troubleshooting with diminishing returns signals that maintenance alone won't resolve it.

• Age at or past the industry-typical service life: Service life varies by equipment type, maintenance history, and operating environment, though industry experience typically places this range between 20 and 40 years. Gear at or approaching this window that hasn't undergone a formal condition assessment should be treated as elevated risk, regardless of whether active symptoms are present.

Why Aging Switchgear Costs More to Keep Than to Upgrade

As switchgear ages, maintenance spend climbs while reliability drops, because replacement parts become harder to source and each service call ends up addressing symptoms rather than the underlying condition. 

Unplanned failures can result in emergency response, extended downtime, and premium costs at every stage. In comparison, a planned industrial switchgear upgrade can be scoped, scheduled, and budgeted in advance. That gap between planned and reactive costs widens the longer a facility waits.

The safety stakes are just as concrete. Roughly 150 workers die from electrical causes in U.S. workplaces each year, with 5,180 electrical injuries involving days away from work recorded for 2023 to 2024.

Electrical distribution and power transfer equipment is also the leading category tied to ignition at industrial properties. More broadly, fires at industrial and manufacturing properties contribute to an estimated $1.5 billion in annual direct property damage.

When aging switchgear raises arc flash exposure and the likelihood of failure, these numbers stop being abstract, because equipment that contributes to an arc flash event or electrical fire can trigger an OSHA inspection. Serious violations currently carry penalties up to $16,550, with willful or repeated violations reaching $165,514.

Retrofit vs. Full Replacement

Most facilities treat knowing when to replace their switchgear as a cost question, when it should really be a condition question.

For example, retrofit typically makes sense when the enclosure, bus, and structural components remain in serviceable condition and footprint or accessibility constraints rule out full replacement. It also fits when load demands remain within the original design capacity and downtime windows are sufficiently limited to make a phased upgrade operationally viable.

Full replacement is the right call when the switchgear structure itself is compromised beyond a serviceable condition or when fault levels exceed the original equipment rating. The same holds true when compliance with current standards requires a full system redesign or capacity expansion can't be achieved through modernization alone.

In some cases, modern breakers can be retrofitted into existing switchgear structures, helping facilities reduce the investment and downtime associated with full replacement.

Component-level service and repair can extend that window further for equipment that doesn't yet need a full breaker retrofit. Either way, the right path is to follow a formal condition assessment, which is where the upgrade process begins.

Planning Your Switchgear Upgrade

A formal engineering assessment establishes the baseline for any switchgear upgrade project, evaluating structural condition, identifying failure risks, and determining whether retrofit or replacement matches the equipment's actual condition. This is also where a switchgear end-of-life assessment moves from assumption to documentation. From there, the project team defines scope, specifies equipment, and plans execution around the facility's operational priorities and outage windows.

Coordinating engineering and field service work under a single process matters because it eliminates handoff gaps that slow projects down when separate vendors manage design and execution. NETA-accredited technical field services carry that work through to commissioning and startup, producing a verified, documented baseline of system performance that stands as defensible proof the upgraded system meets design specifications before re-energization.

Key Questions to Ask Before Upgrading Your Switchgear

Use these questions to help you decide when it's time to replace or upgrade your switchgear:

• Is my switchgear showing operational or physical warning signs? If you're seeing thermal anomalies, nuisance trips, or difficulty sourcing parts, the threshold may already have been crossed, so a formal condition assessment should precede any other decision.

• Are my current load demands within the original design capacity? Equipment sized for a different operational reality may not safely support today's loads, narrowing retrofit options and potentially pointing toward a full system redesign.

• What are my lead time and downtime constraints? In the current supply environment, replacement lead times for medium-voltage switchgear can stretch significantly, making proactive planning the only way to maintain control over your project timeline.

• Does the condition of my equipment support retrofit, or is full replacement necessary? This determination should follow a formal condition assessment rather than cost assumptions, since the right answer protects both the budget and the safety record.

• Do I have a NETA-accredited partner with the engineering depth to assess and execute? The quality of the outcome depends on the expertise behind it, from initial assessment through commissioning.

Move Forward on Your Switchgear Upgrade

Power Solutions Group has paired electrical engineering with NETA-accredited technical field services under one roof, so assessment, retrofit design, and commissioning move through a single integrated team instead of getting handed off between vendors.

That same team developed a precision measurement approach refined over nearly 20 years that produces formed-to-fit busbars, allowing modern breakers to retrofit directly into your existing switchgear structure. Lineups, bus, and cabling stay in place, which widens the retrofit window well beyond what most providers can offer.

Explore Power Solutions Group's switchgear modernization approach and find out what your equipment's condition actually calls for.