All-in-one kit to quickly replace an analog regulator by a digital one.

The SWITCH2D550 is an all-in-one kit that allows you to quickly replace an analog regulator by the D550 digital regulator.


An alternator equipped with an analog regulator R449 or another regulator associated with an optional R726, R729, R731 or R734 module, can use the SWITCH2D550 kit to upgrade to the D550 digital regulator.

Our ready-to-use solution!
This kit avoids wiring mistakes, the use of specific tools and saves you time when replacing your regulator. It also allows to be technologically up-to-date, to improve voltage regulation performances and to comply with all new safety standards.

Our optional terminal block kit allows easy rewiring:

Bornier kit Switch2D550


  • D550 regulator
  • MATE-N-LOK set of cables with labelled wires
  • USB cable
  • Installation manual


Contact our sales department for any request: pdrsillac.ials@mail.nidec.com


Nidec Leroy-Somer accompanies you during the retrofit of your AVR via our video:

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