Instruction manual

KRB-5377
21
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38
Control circuit
terminals
Allow connections of external control wire to the control circuits. Wire connections are
made through M4 screw terminals. Fig. 15 shows the control circuit terminals.
Fig. 15 Control circuit terminals
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39
Control terminal
block cover (optional)
Protects the position switches, the control circuit terminals and the auxiliary switches from
damage.
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40
Cover fixing screw Secures the control terminal block cover.
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41
Auxiliary switches
(optional)
Indicate the state of the ACB (ON or OFF). The auxiliary switches are available in 4C
configuration (standard), or 7C or 10C configuration (optional). Connections to the
switches are made through M4 screw terminals.
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42
Terminal block
Contains position switches
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36
, control circuit terminals
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37
, and auxiliary switches
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38
.
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44
Ground terminal M8
tapped hole
Allows connection of a ground terminal.
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45
Gas exhaust port
Allows the arc gas to be discharged from arc chamber
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25
in a horizontal direction when the
ACB trips open.
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46
Arc gas barrier
Prevents the arc gas from being discharged upwards from arc chamber
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25
when the ACB
trips open.
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47
Breaker draw-out arm Is retracted in the draw-out cradle when the breaker body is in the CONN. position.
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48
Main circuit terminals
Allow connections of external conductors. These terminals are available in three
configurations as shown in Fig. 16.
Vertical terminals Horizontal terminals Front terminals
Fig. 16 Main circuit terminals
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49
Lifting hole (ø20mm) Allows lifting attachments or wire ropes to be used for lifting the ACB.
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50
Protrusion Refer to section 2-3. “Installation Precautions”.
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51
Draw-out handle
(removable)
Use to draw out /insert the breaker body from/into the draw-out cradle.