This depends on the current rating of the model you have:
Contactor rating 9 A to 65 A
A DC coil cannot be replaced. Typical contactor part numbers LC1D12BD (09-38A) and LC1D50ABD (40-65A)
Contactor rating 80 A to 150 A
The coil can be replaced on Tesys D contactors sold since 2001. Typical part number LC1D80BD.
Please refer to our latest catalogue for further information. You can find it here: digicat.se.com.
Please note that the coil on LC1D40-65** manufactured between 2001 and 2009 (non-everlink) could be replaced, but the replacement coils LXD-6** (along with their respective contactors) are all long obsolete.