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ABB Low Voltage Industrial Products 0312
Growing importance of a secure
power supply
The motorized change-over switches have snap-on control
wire connections. Auxiliary contacts can be snapped-on to
the sides of the switches and the power terminals can be
connected in parallel with bridging bars.
Easy installation for local or remote control
ABB change-over switches are very easy to install: the
manually operated switch is operated via a handle fixed
directly on the switch or on the panel door. The 16 to 125
Ampere sizes can be snapped-on to a DIN rail and the front
fits in the 45 mm consumer unit cut-out.
As industrial processes and IT applications diversify, a secure power supply is becoming an increasingly important
asset in the drive to cut production and maintenance costs. In emergency situations, the system logic of power
distribution can become complex with mechanical devices looking after making, breaking, conducting and isolating
power. Loads may sometimes need to be transferred from one supply to another — this will be the case when energy
use is restricted or when the supply source is overloaded.
High performance level
In change-over applications where the loaded switch may
need to be operated remotely, adequate durability has been
ensured by testing against the IEC 60947-6-1 standard in the
specification of endurance requirements.
Utilization categories:
− AC-31 for non-inductive or slightly inductive load
− AC-33 for motor loads or mixed loads including motors
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ABB change-over switches are rated according
to IEC 60947-6-1 standard
I
II