Siemens 3AH3 Instruction Manual page 18

Figure 7: Operating mechanism section diagram (drawout trip-free linkage shown) mechanism OPEN, closing spring DISCHARGED
62.3†
62.2†
62.5.2†
64.5*
64.0*
64.2.1†
62.8.3†
64.2*
64.3.1*
62.8.5†
64.5*
63.5*
48.0*
Footnotes:
* Items moved from position shown in Figure 9: Operating mechanism section diagram (drawout trip-free linkage shown) mechanism
CLOSED, closing spring DISCHARGED on trip operation.
† Items moved from position shown in Figure 8: Operating mechanism section diagram (drawout trip-free linkage shown) mechanism OPEN,
closing spring DISCHARGED on closed spring discharge operation.
For type SDV6 and some fixed-mounted circuit breakers, trip-free coupling rod (62.8) is replaced with a straight coupling rod, and other
1.
parts associated with drawout interlocking are eliminated.
18
62.5.1†
62.5
62.1
50.3
50.3.1
53.0
62.6
62.2.2
53.1
64.2.2
62.8.1
54.0
62.8.2†
62.8*
63.5*
63.0*
62.8.7†
63.7
63.5 62.8.6†
63.1
62.8.8
Item Description
48.0 Insulating coupler
50.3 Charging flange
50.3.1 Driver
53.0 Close pushbutton
53.1 Close coil 52SRC
54.0 Open pushbutton
54.1 Trip coil 52T
62.1 Charging shaft
62.2 Crank
62.2.2 Closing-spring mounting
62.3 Cam disc
62.5 Lever
62.5.1 Pawl roller
62.5.2 Close latch pawl
62.6 Drive lever
62.8 Trip-free coupling rod
62.8.1 Spring-return latch
62.8.2 Trip-free coupling link (draw bar)
62.8.3 Trip-free coupling lever
62.8.5 Push rod and cam assembly
62.8.6 Interlock lever push rod
62.8.7 Interlock lever actuator
62.8.8 Trip-free actuator
63.0 Jack shaft
63.1 Lever - phase C
63.5 Lever - phase B
63.7 Lever - phase A
64.0 Opening spring
64.2 Trip-latch pawl
64.2.1 Trip-latch pin
64.2.2 Latching pawl-release lever
64.3 Lever
64.3.1 Jack-shaft pawl
64.5 Opening-spring shaft