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Introduction
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Siemens LV 10.1 · 2011
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Benefits
• The compact design of the SENTRON 3VL circuit breakers
coupled with excellent characteristics fulfills the high de-
mands of today's electrical distribution systems.
• These circuit breakers offer a broad product range, improved
technology, space savings and easy operation.
• They are available both in thermal-magnetic (16 A to 630 A)
and in electronic versions (63 A to 1600 A).
Communication
The use of modern communication-capable circuit breakers
opens up completely new possibilities in terms of start-up, pa-
rameterization, diagnostics, maintenance and operation. This al-
lows many different ways of reducing costs and improving pro-
ductivity in industrial plants, buildings and infrastructure projects
to be achieved:
• Fast and reliable parameterization
• Timely information and response can prevent plant
stoppages
• Effective diagnostics management
Measured values are the basis for efficient load management,
for drawing up power demand profiles and for assigning power
to cost centers.
Communication:
• For molded case circuit breakers with communication function
see pages 2/12 to 2/28 and 2/40 to 2/50.
• For accessories, see page 2/98.
• For more information see also chapters "Measuring Devices
and E-Counters" and "Software".
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Applications
The different versions of SENTRON 3VL circuit breakers are suit-
able for the following applications:
• Incoming and outgoing circuit breakers in distribution systems
• Switching and protection devices for motors, transformers
and capacitors
• Disconnector units with features for stopping and switching off
in an emergency (main control switches and EMERGENCY-
STOP switches) in conjunction with lockable rotary operating
mechanisms and terminal covers.
The SENTRON 3VL circuit breakers are available in the following
versions:
1. For system protection (in 3- and 4-pole versions)
The overload and short-circuit releases are designed for the
protection of cables, leads and non-motor loads.
2. For motor protection (in 3-pole version)
The overload and short-circuit releases are designed for opti-
mized protection and direct-on-line starting of induction squir-
rel-cage motors. The circuit breakers for motor protection are
susceptible to phase failure and feature an adjustable trip
class. The electronic releases operate with a microprocessor.
3. For starter combinations (in 3-pole version)
These circuit breakers are used both for short-circuit protec-
tion as well as for isolating functions, which may be required
in starter combinations consisting of circuit breakers, overload
relays and motor contactors. These circuit breakers exclu-
sively feature adjustable, instantaneous short-circuit releases.
4. As non-automatic circuit breakers (in 3- and 4-pole versions)
These circuit breakers can be used as feeder circuit breakers,
main control switches or non-automatic circuit breakers with-
out overload protection. They incorporate an integrated short-
circuit self-protection system, eliminating the need for back-
up fuses.
Switching capacity
Standards and specifications
SENTRON 3VL circuit breakers comply with:
IEC 60947-1, EN 60947-1,
IEC 60947-2, EN 60947-2.
Isolating features according to IEC 60947-2, EN 60947-2.
Disconnecting features (main control switches) according to
EN 60204.
The SENTRON 3VL circuit breakers comply in addition with re-
quirements for "disconnector units with features for stopping and
switching off in an emergency" (EMERGENCY-STOP switches) in
conjunction with lockable rotary operating mechanisms (red-yel-
low) and terminal covers.
Please contact Siemens for details of other standards.
The electronic releases of the circuit breakers for motor
protection also fulfill IEC 60947-4-1, EN 60947-2.
VL160X to VL400 circuit breakers can be equipped with a
SENTRON 3VL RCD module. They then comply with
IEC 60947-2 Appendix B.
The SENTRON 3VL RCD module complies with IEC 61000-4-2 to
IEC 61000-4-6, IEC 61000-4-11 and EN 55011, Class B (equiva-
lent to CISPR 11) with regard to electromagnetic compatibility.
Operating conditions
The SENTRON 3VL circuit breakers are designed for operation
in enclosed areas.
Suitable enclosures must be provided for operation in areas with
severe ambient conditions (such as dust, caustic vapors, haz-
ardous gases).
Circuit breakers with standard switching capacity N
(
I
cu
up to 55 kA at 415 V)
Circuit breakers with high switching capacity H
(
I
cu
up to 70 kA at 415 V)
Circuit breakers with very high switching capacity L
(
I
cu
up to 100 kA at 415 V)
These switching capacities are indicated in the corre-
sponding tables by the symbols shown on orange back-
grounds.
N
H
L