technical description
SZ.PL .. Cemented two-tube (SZZPL..)- or three-tube (SZDPL..) adjustable slide resistors with spindle drive (standard version)
SU.PL .. Uncemented two-tube (SUZPL..)- or three-tube (SUDPL..) adjustable slide resistors with spindle drive (special version)
- in laboratory version
- enclosure with aluminium coloured varnish and rubber feet
- degree of protection IP 20