Soft starters in the new DS7 range
from Eaton’s Electrical Sector are
reported to combine smooth starting
and freedom from vibration,
previously only available from threephase
units, with the economy and
space savings of a two-phase soft
starter. In addition, as fully integrated
elements of the Eaton xStart motor
control range, they offer the
convenience of fast, simple tool-free
connection with motor protection
relays and circuit breakers.

Available with ratings from 1.1kW
to 15kW on 400V three-phase
supplies, they feature a patented
asymmetric triggering system that
eliminates DC components in the
supply to the motor during starting.

This ensures smooth starting, allows
the units to deliver more starting
torque and reduces motor heating.

The low level of motor vibration
during starting also minimises wear
on mechanical components.