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The AT 0, ATR and AT 4 limit switches
feature a Modular System, Degree of Protection NEMA 4, 23
and IEC IP 65, Total Insulation, personnel protection,
positive operation, suitable for use with electrical devices
to IEC/EN 61 131-2. Safety function with positively opening
contacts to IEC/EN 60 947-5-1, Devices for world markets:
and UL/ CSA / IEC / CE |
With low
control circuit voltage, an increased number of circuit
failures can occur in electrical control systems. That
is the reason why special universal contacts, with low
contact resistance, are used in all AT 0 limit switches.
It offers a high level of control circuit reliability
with low circuit voltages and thus makes these limit
switches most suitable for use with electronic
systems.The separated contacts permit circuit voltages
as high as 300V
A300 contact rating.
Contact Types
• normal action contacts
•
overlapping contacts
• snap-action contacts
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