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ANU-1 OCR Checker

Terasaki ANU-1 ocr checker

Model number
Shipping details
carry case 10kg 30L 20W 10H
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Duration (days)
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1 month
2 month
All prices are ex-GST
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The ANU-1 OCR checker is an indispensable tool for field-testing overcurrent relays (OCRs). This compact, portable device can verify the operational integrity of OCRs by simulating fault conditions. It tests various functionalities, including long and short time-delay, instantaneous trips, ground fault trips and pre-trip alarms. Its user-friendly interface allows for quick and precise adjustments of current settings, ensuring comprehensive relay testing. Ideal for utility and industrial applications, the ANU-1 enhances maintenance efficiency by accurately assessing the performance of protective relays — contributing to the overall safety and reliability of electrical systems.

Measurement output

  • Long time delay trip pickup current
  • Long time delay trip pickup time
  • Short time delay trip pickup current
  • Short time delay trip pickup time
  • Instantaneous trip pickup current
  • MCR trip pickup current
  • Ground fault trip pickup current
  • Ground fault trip pickup time
  • Instantaneous trip operation
  • N-phase protection trip pickup current
  • Pre-trip alarm pickup current *2
  • Operation: Via front of tester
  • Weight: 1kg

Key Features

  • Long and short time delay trip measurement capability
  • Instantaneous and ground fault trip measurement
  • Pre-trip alarm functionality
  • OCR measurement without requiring control power
  • Single connector for simplified OCR connection
  • Clear LCD display for function, output phase and trip signal indicators
  • Push-button switches for effortless operation


  • Utility substations — In utility substations, the ANU-1 OCR checker is vital for ensuring the proper functioning of overcurrent relays, which protect against faults and overloads in the power distribution network. Regular testing with the ANU-1 helps maintain system reliability and prevents power outages.
  • Industrial facilities —Industrial facilities rely on the ANU-1 for testing protective relays in their electrical systems. This ensures that machinery and processes are safeguarded against electrical faults, minimising downtime and maintaining operational efficiency.
  • Renewable energy plants — At renewable energy sites like solar or wind farms, the ANU-1 plays a crucial role in testing and maintaining overcurrent relays, which are critical for the stable integration of renewable energy into the power grid.
  • Electrical maintenance and repair services — The ANU-1 is a go-to tool for electrical maintenance professionals. It is used for on-site testing of overcurrent protection systems in various settings, ensuring these critical components function correctly and safely.

Rent the ANU-1 OCR checker today from Brandis Hire

Brandis Hire, Australia’s most trusted technical equipment hire company, is dedicated to simplifying the equipment rental process. We provide streamlined services, including hassle-free freight to and from customer locations, so you get the right equipment when needed.

Our focus on exceptional customer service is evidenced by our 4-hour free technical support with every hire, accessible 24/7. Rent the ANU-1 OCR checker now by submitting a booking request. Alternatively, you can contact us directly for personalised assistance.


Why choose the ANU-1 OCR checker?

The ANU-1 OCR checker is a top choice for its precision and versatility in testing overcurrent relays. Its ability to measure both long and short-term delay trips and instantaneous and ground fault trips, coupled with a pre-trip alarm feature, makes it a comprehensive tool for ensuring the safety and reliability of electrical systems. The simplicity of its single connector and clear LCD enhances user experience, providing efficient and accurate testing

What other circuit breaker analysers do you offer for hire?

Brandis Hire offers an extensive selection of circuit breaker analysers and related testing equipment catering to various electrical testing needs. Whether working on a large-scale industrial project or a more minor, specialised task, our equipment range ensures you have the right tools for the job. Our range includes:

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ANU-1 OCR Checker