ETI MAC-21 Repair
ETI Precision Repair

ETI MAC-21 Circuit Breaker Tester Repair

$245.00

Listed price is a starting estimate. Final quote issued upon evaluation. Repaired and tested by June Company, trusted in the power and utility sector. Includes a 90-day warranty and NIST-traceable calibration available upon request. Ideal for substation, field service, and control system applications.

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Description

ETI MAC-21 Circuit Breaker Tester Repair & Calibration Services

June Company offers expert repair and calibration services for the ETI MAC-21 Monitor Ammeter Controller, ensuring precise high-current injection, accurate control, and reliable operation for circuit breaker testing. Whether your unit fails to power on, exhibits output inconsistencies, or encounters control issues, our technicians are equipped to restore it to optimal performance.​

We support ETI circuit breaker testers utilized in substation maintenance, protection scheme verification, and high-current testing applications.​

Common ETI MAC-21 Issues We Repair

  • Failure to power on or complete initialization​

  • Inaccurate or unstable current readings​

  • Control panel or display malfunctions​

  • Timer inaccuracies or failures​

  • Communication port issues (USB, Ethernet, RS232)​

  • Internal power supply or control board faults​

  • Physical damage to connectors or casing​

Our Repair & Calibration Process

Each MAC-21 unit undergoes comprehensive diagnostics and performance verification:

  • Initial evaluation completed within 48 hours​

  • Detailed inspection and cleaning of internal components​

  • Repair or replacement of faulty circuits, controllers, and interface modules​

  • Functional testing with simulated high-current conditions to ensure measurement accuracy​

  • Optional NIST-traceable calibration certificate available upon request​

Why Choose June Company?

  • Over 25 years of experience servicing high-current test equipment and power system diagnostic tools​

  • Trusted by utility engineers, commissioning teams, and testing laboratories​

  • All repairs backed by a comprehensive 90-day warranty​

  • Fast turnaround with detailed service documentation​

  • Calibration-ready services to meet regulatory and quality assurance standards​

Schedule Your MAC-21 Repair Today

If your ETI MAC-21 Circuit Breaker Tester is experiencing performance issues or operational failures, June Company is here to assist.
📩 Contact us today to request expert evaluation, repair, and calibration services.

Brand

ETI Repair

ETI Precision, also known as Electrical Test Instruments (ETI), provides a range of calibration and testing equipment primarily for electrical safety and performance verification. Here's an overview of some key ETI Precision products and what they do:

1. Multi-Product Calibrators

  • Description: Instruments designed to calibrate various types of electrical test equipment such as multimeters, oscilloscopes, and power meters.
  • Applications: Used in laboratories, manufacturing, and service centers to ensure the accuracy of measurement devices.
  • Popular Models: Cal Test 5000
  • Features: High accuracy, multifunctional capabilities, and user-friendly interfaces.

2. Electrical Safety Analyzers

  • Description: Devices for testing the safety and compliance of electrical equipment by measuring insulation resistance, ground continuity, and leakage current.
  • Applications: Essential for testing medical devices, consumer electronics, and industrial machinery to meet safety standards.
  • Popular Models: ESA615 Electrical Safety Analyzer
  • Features: Comprehensive safety testing, automated test sequences, and detailed reporting.

3. Portable Appliance Testers (PAT)

  • Description: Instruments used to test the electrical safety of portable appliances, ensuring they are safe to use.
  • Applications: Commonly used in workplaces, rental properties, and service industries to test tools, appliances, and office equipment.
  • Popular Models: PrimeTest Series
  • Features: Lightweight, easy to use, and capable of conducting a range of safety tests.

4. High Voltage Insulation Testers

  • Description: Equipment for measuring the insulation resistance of high voltage equipment and systems.
  • Applications: Used in power utilities, industrial plants, and maintenance services to detect insulation breakdowns and prevent failures.
  • Popular Models: HV Insulation Tester 5400
  • Features: High test voltages, accurate measurements, and robust design for field use.

5. Ground Resistance Testers

  • Description: Devices for measuring the resistance of grounding systems to ensure they provide a safe path for fault currents.
  • Applications: Vital for the maintenance of electrical grounding systems in buildings, substations, and industrial facilities.
  • Popular Models: Ground Resistance Tester 6100
  • Features: Reliable measurements, easy-to-read displays, and durable construction.

6. Transformer Test Equipment

  • Description: Instruments designed to test the performance and condition of electrical transformers.
  • Applications: Used by utilities and service companies to assess transformer efficiency and detect potential issues.
  • Popular Models: Transformer Ohmmeter 2800
  • Features: Accurate resistance measurement, easy operation, and comprehensive testing capabilities.

7. Current Clamp Meters

  • Description: Devices that measure current flow in electrical conductors without needing to make direct contact or disconnect the circuit.
  • Applications: Useful for electricians, maintenance personnel, and energy auditors for non-invasive current measurements.
  • Popular Models: Current Clamp Meter 3000
  • Features: High sensitivity, wide measurement range, and portable design.
ETI Precision Repair

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