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750ADM MK3 Primary Current Injection Test Set

5.0 (4 reviews)

  • Primary current injection up to 750A
  • 4V output
  • 16V 40A output for secondary injection
  • True RMS digital metering with single cycle capture
  • Multi-function timing system
  • Large back-lit liquid crystal display
  • Thermal and over-current protection
  • Automatic switch-off at end of test
  • Compact and portable
  • Automatic mains voltage selection
  • Clear and simple user interface
SKU: 244 / 244P Category: Tags: , ,


The 750ADM MK3 Primary Current Injection Test Set is a versatile and powerful tool. It offers comprehensive testing capabilities with its dual outputs and a range from milliamps to 750A. Additionally, the 40A output provides up to 16V, making it perfect for high impedance trips.

You have the flexibility to independently set the meter’s scale and trip level using its four true RMS metering ranges. The test set captures data in under 20ms, ensuring precise measurements. The industry-standard connectors used in the 750ADM MK3 ensure convenience, reliability, and safety.

This test set features robust protection mechanisms, including electronic overcurrent and thermal trips. Its flexible timing system enables accurate measurements of trip, reset, and reclose times without compromising ease of use. The two contact inputs support both normally open and normally closed contacts, accommodating a variety of triggering options.

Efficiently test circuit breakers, relays, auto-reclosers, MCBs, and CT ratio using the 750ADM MK3 Primary Current Injection Test Set. Furthermore, this advanced test set empowers is available in either metal casing or pelican transport case.

Our partners, such as AcutestAlpha ElectronicsCuthbertson LairdNorwich Instrument Services, and PASS Ltd, offer the 750ADM Mk3 in the United Kingdom. Additionally, if you are located outside Great Britain, you can conveniently order the product through our worldwide distribution network.

750ADM Mk3 Operating Manual


750ADM Mk3 Datasheet


Additional information

Metal Case Weight

23.5 kg

Metal Case Dimensions

380 x 314 x 221 mm

Pelican Case Weight

27.4 kg

Pelican Case Dimensions

560 × 456 × 265 mm

Supplied Accessories

User manual
Calibration certificate
Mains lead
Spare Fuses

4 reviews for 750ADM MK3 Primary Current Injection Test Set

  1. David Brown

    Replaced my old 750ADM with Mk3 version and I was very happy to find out the functionality I was looking for was still there and much more added. Really like the new orange look, it makes the unit stand out more.

  2. John Wilson

    My 750ADM-H Mk2 had a broken front panel and variac after being dropped. Luckily, T&R was able to repair the unit. My 750ADM-H Mk2 now has the beating heart of Mk3. Thank you guys!

  3. Pavel Novak

    Bought one through the local agent and received free of charge online training from T&R afterwards. I am very happy with the product and the company. Will buy again next time.

  4. William Johnson

    I use the pelican case version for my work. Also got a set of 1.5m long leads in orange case. I like that I can use the unit straight away without much fuss. The orange case has enabled me to have al my Primary Injection bits and pieces in only 2 cases.

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