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3VT1 Molded Case Circuit Breakers up to 160 A
Accessories and Components
Manual operating mechanisms
2/25
Siemens LV 36 · 2008
2
■
Design
Rotary operating mechanisms
The manual operating mechanism permits the actuating of the
circuit breakers/switch disconnectors by turning the knob, e.g.
in order to switch machines on and off. The modular concept of
the operating mechanism allows for simple mounting on the cir-
cuit breaker (even as an add-on). Mounting can be done after
having removed the accessory compartment cover. An affixed
drive may be sealed. The drive and its accessories are ordered
separately according to your choice
(see page 2/7)
.
The manual operating mechanism permits actuating the circuit
breaker:
a) from the front panel (Fig. 1)
3VT9 100-3HA/HB/HC/HD.. rotary operating unit
+ 3VT9 100-3HE/HF.. knob
b) through the control cabinet door (Fig.2)
3VT9 100-3HA/HB/HC/HD.. rotary operating unit
+ 3VT9 100-3HJ.. extension shaft ..
+ 3VT9 100-3HG/HH.. coupling driver
+ 3VT9 100-3HE/HF.. knob
c) through the side wall of the control cabinet (Fig.3)
in left- or right-side designs of manual operating mechanisms for
lateral operation
3VT9 100-3HD10 (right) or 3VT9 100-3HC10 (left)
+ 3VT9 100-3HJ.. extension shaft
+ 3VT9 100-3HG/HH.. coupling driver
+ 3VT9 100-3HE/HF.. knob.
• The manual operating mechanism is mounted directly on the
circuit breaker or switch disconnector.
• The coupling driver is fixed to the control cabinet door and
provides for degree of protection IP40 or IP66.
• The knob is mounted onto the manual operating mechanism
or onto the coupling driver.
• The extension shaft is supplied in two versions, standard
(length 350 mm - can be shortened) and telescopic (adjust-
able length 199 ... 352 mm). It is fitted onto the manual oper-
ating unit.
Enhanced safety for operator
• The manual operating unit and knob are also supplied with the
option to lock the circuit breaker into the “switched off manu-
ally” position. The manual operating unit and lever can be
locked with up to three padlocks with a shaft diameter up to
3 ... 4 mm.
• Every coupling driver prevents the control cabinet door from
opening when the circuit breaker is switched on or in a state
of being switched off by releases. By means of this device, it
is possible to switch off this locking and to open the door.
Locking of the control cabinet door is also possible in the
„switched off manually“state of the circuit breaker. It is neces-
sary to activate the locking by means of the knob on the cou-
pling drive and to lock the hand drive arm.
• Two circuit breakers with manual operating mechanism can
also be provided with reciprocal mechanical interlocking or
mechanical parallel switching
(see page 2/26)
.
Features
Order No.
Description
Color
Locking while the
circuit breaker is
in switched off state
Degree of
Protection
Switchgear door locking in
circuit breaker state
Length
mm
switched on switched off
manually
and locked
3VT9 100-3HA10
Rotary operating mechanism gray
no
--
--
--
--
3VT9 100-3HA20
gray
yes
--
--
--
--
3VT9 100-3HB20
yellow yes
--
--
--
--
3VT9 100-3HC10
Rotary operating mechanism
- lateral, left
grey
no
--
-
--
--
3VT9 100-3HD10
Rotary operating mechanism
- lateral, right
grey
no
--
-
--
--
3VT9 100-3HE10
Knob
black no
--
--
--
--
3VT9 100-3HE20
black yes
--
--
--
--
3VT9 100-3HF20
red
yes
--
--
--
--
3VT9 100-3HG10
Coupling driver
black --
IP40
yes
yes
--
3VT9 100-3HH10
black --
IP40
yes
yes
--
3VT9 100-3HG20
yellow --
IP66
yes
yes
--
3VT9 100-3HH20
yellow --
IP66
yes
yes
--
3VT9 100-3HJ10
Extension shaft
--
--
--
--
--
350 (can be shorted)
3VT9 100-3HJ20
--
--
--
--
--
199 ... 352 telescopic