Seaward Proving Unit MkII for use with the Seaward Live Line Tester (423A911)


£260.00 / £312.00 incl VAT

⚡ Reliable Performance Verification: Ensures your LLT Mk2 is operating correctly with a clear, active indicator.
⚡ Network Rail Certified: Complements the certified LLT Mk2 for complete compliance and safety.
⚡ Portable and User-Friendly: Battery-powered and designed for field use with easy-to-follow instructions.

In stock (can be backordered)

Price Pledge

Calibration Certificate

Add Calibration to your Proving Unit.

SKU: SEA-PH3-LLT Categories: , Tag: Brand:


Seaward Proving Unit MkII (Part Number: 423A911)

Product Details:

Enhance the reliability of your voltage testing with the Seaward Proving Unit MkII. Designed to complement the Seaward LLT Live Line Tester Mk2, this proving unit is an essential accessory for any professional working on electrified rail systems.

Key Features:

  • Network Rail Certified: Accompanies the LLT Mk2 with the same Network Rail Certificate of Acceptance No. PA05/03345.
  • Portable and Practical: A highly portable, battery-powered unit that ensures your Live Line Tester is functioning correctly in the field.
  • Active Indication: Features a red indicator that illuminates when the unit is active, providing clear confirmation of operation.
  • Stable and Secure: Comes with an integrated case and a wide base to maintain stability on uneven ground, ensuring consistent performance.
  • Convenient Design: Operating instructions are printed on the case for quick reference during use.
  • Output Specifications: Delivers a DC output voltage from a 9V PP3 battery source, with an output voltage of 500V DC nominal and an output current of 10mA into 2k ohms.

What’s Included:

  • Seaward Proving Unit MkII
  • Integrated protective case
  • User manual with operating instructions

The Seaward Proving Unit MkII is the perfect partner for the LLT Mk2, providing you with the confidence that your voltage testing is accurate and compliant.


There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.

You may also like…