Nexans Euromold 156SA Surge Arrester

Interface A (for up to 24 kV)

Nexans Euromold 156SA Surge Arrester is designed to protect 12kV and 24kV class components, including transformers, equipment, cable and accessories from high voltage surges resulting from lightning or switching.

These are available for the following voltage classes:-

  • 6/10 (12kV)
  • 6.35/11 (12kV)
  • 8.7/15 (17.5kV)
  • 12/20 (24kV)
  • 12.7/22 (24kV)


Technical Characteristics –

  • This surge arrester is a metal oxide varistor surge arrester in an elbow configuration.
  • Each arrester is tested for AC withstand and partial discharge prior to leaving the factory

Design –

Surge arrester comprising:

  1. Bail restraint.
  2. Conductive EPDM insert.
  3. Type A – 250 A interface as described by CENELEC EN 50180 and 50181.
  4. Pin contact.
  5. Contact disc.
  6. Copper shunt.
  7. Metal oxide valve elements.
  8. Aluminium spacer.
  9. Steel cap.
  10. Earth connection.
  11. Insulating EPDM layer moulded between the insert and the jacket.
  12. Conductive EPDM jacket.
Surge arrester type Nominal discharge current In (kA) Rated voltage Ur (kV) Max continuous operating voltage Uc (kV) Steep current residual voltage @ 5 kA (1/20 µs) [kV] Lightning current residual voltage @ 5 kA (8/20 µs) [kV] High current impulse withstand (kA)
156SA-12 5 15 12.5 62.5 54.5 40
156SA-15 5 19 15.5 77.0 69.0 40
156SA-18 5 22 18.0 87.0 79.0 40
156SA-21 5 26 21.0 101.5 93.5 40
156SA-24 5 30 24.5 116.5 108.5 40