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Seaward PowerTest 1557 Multi Function Installation Tester


Thanks to a clever bit of design, we have included a cordless probe for use with the tester, meaning you can hold the tester and see the results at the same time. Weighing in at a mere 900 grams, it's light too. And it can do any test that you require at the turn of a knob, including Earth Continuity, Insulation (100v, 250v, 500v), Non-trip Loop Impedance, Line Impedance, RCD trip line, RCD trip current and voltage / frequency measurements.

Key Features

  Comprehensive testing features - Comprehensive 17th edition and Part-P testing features allow for a multitude of tests including: Earth Continuity, Insulation (100v, 250v, 500v), Non-trip Loop Impedance, Line Impedance, RCD Trip current, and Voltage/Frequency measurement.
  Unique cordless probe - Makes testing a breeze as it allows you a free hand to hold your tester - therefore you can view your results, as you're testing.
  Non-tripping loop - Measure loop impedance without tripping RCD's.
  Smallest and lightest in its class - It fits in the palm of your hand and won't weigh you down.

Power Solution Users

  Electrical Contractors
  Electrical Engineers
  Training Institutions


Data Sheet

Supplied With

  2 year warranty
  6 x 1.5V cells LR6 type AA alkaline batteries
  Test lead, 1.5M 13A UK plug to Red, Black, Green 4mm shrouded safety plugs
  Alligator Clips: Red, black, green
  Test lead, set 1.5M Red, Black, Green 4mm shrouded safety plugs to Red, Black, Green 4mm shrouded safety test probes
  Red, cordless, 4mm shrouded safety test probe

Ordering Information


328A910 Powertest 1557 (1-9 Units) - 17th Edition Multi-Function Installation Tester.
328A910 Powertest 1557 (10 Units +) - 17th Edition Multi-Function Installation Tester.
328A952 Powertest 1557 Probe - Powertest Probe
328A950 Powertest 1557 Lead Set - Powertest Lead Set
328A951 Mains Lead - Powertest Mains Lead
44B075 Fused Test Leads - Fused test leads, 1.5m, Red & Black with crocodile clips
328A953 Carrying Case - Protective Hard Carry Case for Powertest 1557



Please note - Product designs and specifications are subject to change without notice. The user is responsible for determining the suitability of this product.

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