You need test results you can trust—because safety, uptime, and compliance depend on it. Megger’s circuit breaker analysers give you the clarity to act with confidence across the full breaker lifecycle, from development and commissioning to maintenance and fault diagnosis.
You’ll uncover hidden issues, confirm repairs, and avoid critical failures before they happen. Accurately test timing, stroke, coil current, contact resistance, and dynamic resistance—even in noisy high-voltage environments.
Built for real-world challenges, our analysers help reduce failures, extend equipment life, and maintain compliance with IEC, IEEE, and NETA standards.
Get faster answers in the field, make decisions with confidence, and keep your circuit breakers protecting your power systems reliably—day in, day out.
Because a breaker that doesn’t trip when needed puts everything at risk. Regular testing confirms that your breakers will isolate faults effectively and perform under pressure—when seconds matter.
It helps you:
Accurate testing keeps your protection systems dependable, your teams safe, and your operations running without disruption.
Test at every key stage of the breaker’s lifecycle to ensure performance stays within safe, reliable limits. Each stage reveals different risks—and early testing prevents problems later.
Recommended test points include:
Regular testing gives you the data to make confident decisions—and keeps systems safe, compliant, and ready to perform.
The goal is to confirm the breaker will operate quickly, reliably, and within defined tolerances. Even small deviations can signal wear, misalignment, or a developing fault.
At a minimum, you should measure:
These values help you assess mechanical condition, electrical performance, and whether the breaker will isolate faults as expected—under real-world conditions.
Yes—testing should align with recognised international standards to ensure consistency, safety, and regulatory compliance.
The key standards include:
Following these standards helps you verify performance, reduce liability, and demonstrate that your breakers are tested to the highest industry benchmarks.
Speak directly with a Megger specialist about your setup. Whether you're commissioning a new installation, diagnosing a fault, or updating your test strategy, we’ll help you choose the right solution for your workflow.
Get clear guidance from engineers who understand the demands of high-voltage testing—and walk away with a recommendation you can act on.
Take a deeper dive into circuit breaker analysers through our comprehensive guides.
Accurately assess arcing contact wear using DRM testing
