SIRIUS 3RM1 motor starter
Manual, 06/2016, A5E0345285095020A/RS-AE/005
189
The 3-phase busbar enables several 3RM1 motor starters to be supplied using a single
infeed terminal.
Approval of switching devices and switchgear in accordance with national standards, some
of which must be met on a mandatory basis, which exist in addition to "IEC", "CENELEC",
and "CEE" guidelines, for example. The North American market (the USA and Canada), for
example, requires UL or CSA approvals. There is also an obligation to label the equipment
accordingly, i.e. the approval mark must be inscribed on the device itself.
AWG (American Wire Gauge)
A standard measure for conductors used in the USA, which is assigned to a specific cross-
sectional area of a conductor or wire. Each AWG number represents a jump of 26% in the
cross-sectional area. The thicker the wire, the smaller the AWG number.
See "Trip class".
The 3RM1 motor starter is connected using screw terminals, push-in connections and hybrid
connection technology.
Prerequisite for using electrical equipment in hazardous areas conforming to DIN EN 50014
(VDE 0170/0171). For explosion protection, you must ensure that equipment which may
generate explosive arcs (plasma) during operation is enclosed in a flameproof casing. This
means that, although the potentially explosive mixture could penetrate the enclosure, if an
explosion were to occur inside it then no explosive flame could escape.
The infeed system for 3RM1 enables simple and fast establishment of the main circuit
connections when using several 3RM1 motor starters arranged side-by-side.
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