Siemens I-T-E Sensitrip MD Series, Information And Instruction Manual

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I-T-E Mechanical Interlock (M15404)
31
Support Tie Bar Mounting
A. With 9-in. long tie bar wrench (8) supplied (Figures 2 and
3) positioned around left pole tie bar connector (9), pull tie
bar connector back in direction of arrow (away from trip
unit) and drop safety wood block (10) with 1-in. dimen-
sion into gap between tie bar connector and trip unit on
right pole. Wood block should come to rest snugly on the
two socket head cap screws as shown in Figure 4.
Remove wrench.
Securing Tie Bar Connector
B. Two sets of plungers are provided. Select proper length
of plunger (11 ) (Figures 2 and 3) for desired application
and discard the pair of plungers not used. Position
support tie bar assembly from top and insert plunger
through rectangular opening in base from bottom of
base. Tie bar member (12) must fit around tie bar connec-
tor (Figure 3). It may be necessary to gently tap tie bar
member down to achieve snug fit.
Position of Link Assembly
C. Plunger locator pin (13) (Figure 3) of link assembly should
face toward outer edge of breaker and must engage hole
in plunger Once this engagement is achieved, tighten two
5/16-18 socket head cap screws (14) to 140 in. Ib.
(Figure 2).
NOTE: Plunger is installed only on left hand pole of each circuit
breaker.
Figure 2
Figure 3
Figure 4