6
A5E00817847-01
Operating Instructions
English
The 3VT circuit breakers can be delivered with rated currents I
n
from
10 A to 630 A. For the frame sizes VT63 and VT100 the rated current I
n
varies from 10 A to 63 A and 32 A to 100 A.
Furthermore, the rated operating voltage is AC 415 / 440 V and the
rated insulation voltage is AC 500 V. The circuit breakers are designed
to be used for system protection as well as for switching electrical cir-
cuits.
The 3VT frame sizes VT63 and VT100 are available with thermal-mag-
netic overcurrent trip units with either permanently set (fixed) or adjust-
able long-time delay overload protection (L). The instantaneous short-
circuit protection (I) is fixed.
3VT circuit breakers are climate-proof. They are designed for use in
enclosed areas in which there are no severe operating conditions (e.g.
dust, corrosive vapors, damaging gases). For installation in dusty and
damp areas, suitable enclosures (housings, cabinets) must be provi-
ded. The ambient temperature must be b40 °C and -5 °C, and
the average value within a 24-hour period must not 35 °C;
Altitude: below 2,000 m;
Pollution category: 3;
Utilization category: A.
The circuit breakers are mounted with M 5 screws in accordance with
the dimension drawing (1). See Figure (3) for the permissible mounting
position. The required arc blow-out space as shown in Figure (2) must
be observed.
The main terminals of the circuit breakers are equipped with box termi-
nals suitable for the direct connection of solid or stranded cables.
Finely-stranded conductors must be fitted with cable end sleeves. For
permissible conductor cross-sections and tightening torques, see Table
(6).
On 4-pole versions, the neutral conductor is always connected on the
left. Reverse feeding is not allowed. After connection, terminal shields
(optional accessories) may be fitted if required.
For information regarding the main dimensions of optional connections
(front extended bus bar and rear screw connection), see Figure (4).
Toggle lever position and state indication, see Figure (8).
The circuit breaker and the switching state indicator are operated by the
toggle lever.
After the circuit breaker has tripped (toggle lever in "Tripped" position),
the toggle lever must be moved beyond the 0 ("OFF") position until it
relatches. Only then can the circuit breaker be reclosed. A closed circuit
breaker can be tripped (function test) by pressing the test button.
Read and understand these instructions before installing, operating,
or maintaining the equipment.
DANGER
Hazardous voltage.
Will cause death or serious injury.
Disconnect power before working on equipment.
CAUTION
Reliable functioning of the equipment is only ensured with certified
components.
3VT General information
VT63 / VT100 Operating conditions
Installation
Connection of the main and auxiliary conductors
Operation
!
o
o
o
o
Required space above arc chutes
Minimum clearance to adjacent
grounded parts as well as to non-
insulated live parts.
(2)
(3)
a
(4)
Extended front
terminals
Rear terminals
(screw)
Circuit
breaker
(1)
