Description
2.2 Ergonomic design
3VA molded case circuit breakers with UL and IEC certification
Manual, 01/2019, L1V30435333-01
29
When the 3VA UL molded case circuit breaker is in the OFF position, it ensures that the
circuit is reliably disconnected in all current paths. The clearances dimensioned according to
UL 489 ensure that, in the event of overvoltages between input and output, isolation is
maintained.
The main switch functionality is not diminished by installation of the following accessories:
● Motor operator
● Manual operators
● Plug-in and draw-out technology
Optional installation variants
The 3VA UL molded case circuit breakers are available in the following installation variants:
● Fixed-mounted ①
● Plug-in technology
②
● Draw-out technology
③
Plug-in and draw-out technology provide the option of quickly replacing the molded case
circuit breakers during maintenance and of establishing visible electrical isolation in the main
circuit, when the breaker is removed.
The terminals of the circuit breakers and their corresponding plug-in or draw-out bases are
designed the same. This means that all connectors, terminal covers and other connection
elements can be mounted on the bases exactly as they would mount on the breakers.
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