Motor switches in the TME offer – overview.
The offer of motor protection breakers from Transfer Multisort Elektronik includes hundreds of products from renowned and global manufacturers. The following overview presents a
range of many types, series and families of motor breakers supplied by four major brands, namely SIEMENS, ABB, EATON and SCHNEIDER ELECTRIC. The product catalogue also
includes a wide range of compatible accessories and products from many other manufacturers.
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ADVERTORIAL FEATURE TME
SCHNEIDER ELECTRIC motor breakers
and protective accessories.
Schneider motor protection breakers are
designated GZ1 and GV2 (the
module width 45 mm) and GV3
(55 mm). They have a simple
but solid construction
and are highly reliable.
GV2 are 3-phase motor
breakers intended for motor
control and protection, in
line with to IFC 947-2 and
IFC 947-4-1 standards. They
are connected with screw terminals, and are
operated with a rocker switch I/O.
Those breakers can protect motors with a
power of up to 15 kW/400V in
fi fteen current ranges (0.10A
to 32A). They offer a setting of
thermal shutoff and a knobcontrolled
adjustment to the
rating current of the motor.
The magnetic fuse in GV2
breakers has a non-adjustable
shutoff point, about 13 times
maximum of the thermal shutoff
set current.
GZ1 is the series of 3-phase motor breakers
compliant with IEC 947-1, IEC 947-2 and IEN
60204 norms. Their connection and motor
operation is the same as in the series GV2.
Those breakers are designed for protection
of 3-phase motors with a power of up to
15KW/400V, like the GV2 series.
Unlike the previous ones, the GV3 series is
distinguished with a BTR screw connection
(hexagonal socket), installed with an Allen
wrench. Thanks to that, the “creep” of wires
can be avoided. GV3-P motor breakers
are also available with a ring-terminal
connection. This type of connection meets
the standards of some Asian markets and
may be used is the environment without any
strong vibrations. Schneider Electric offers
also enclosures and safety switches with IP55
ingress protection class, which means these
devices can be mounted in the environment
with harsh conditions of increased humidity
or dustiness. Moreover, the manufacturer
offers a wide gamut of accessories
compatible with the devices from the three
series described above.
SIEMENS motor breakers
and protective
accessories.
Siemens motor protection
breakers and accessories
are grouped into the Sirius
3RV family, a component
of the Sirius modular system
for applications below 100A. As in other
brands, this system comprises a number of circuit
breakers with different parameters, available in seven
compact families, as well as standardized accessories.
Ergonomic screw and snap-fastened connections make
maintenance easier and faster. These breakers are
intended to be used in normal switching cycles as well
as for safe isolation of the system from power supply
during maintenance or modifi cations. The Sirius 3RV
family of motor breakers is divided into two subgroups
coded 3RV1011 and 3RV2, both mounted on DIN
rails. The former is equipped with rocker switches and
consists of only one family of size S00 models. Their
operating voltage range is 220-690V, and short-circuit
release occurs for currents of 0.11A to 12A. The latter
group, 3RV2, is equipped with rotary switches and
consists of six families (3RV20/ - 21/ -23/ -24/ -27
and -28) in sizes S00, S0, S2 and S3. Their operating
voltage range is up to 690V, and their short-circuit
release occurs for currents of 0.11A to 100A. Additional
accessories for Sirius 3RV1 and 3RV2 breakers are
e.g. front and side auxiliary contacts (2- and 4-polar),
signalling contacts and undervoltage releases.
ABB motor breakers and protective
accessories.
ABB motor breakers are grouped in two
product families coded MS116 and MS132.
They offer solutions that are compliant
with all accepted standards, e.g. they have
lockable handles (MS132), offer a testing
function and regulation of tolerated current
amperage. They are featured with a wide
range of operating temperatures and with
compact sizes (width 45 mm). Both product
families offer a wide scope of protection for
motors with power of up to 15 kW (400V)
/ 32A, thanks to short-circuit shutoff for
currents of 50kA (MS116) and 100kA
(MS132). Other features of ABB MS 116/132
motor breakers are e.g. the function of
temperature compensation (no release up
to 60ºC), rotary switch with clearly visible
indication of position, and compatibility
with motor starters with 1- and 3-phase
applications. Additional accessories include
auxiliary contacts, signalling contacts,
undervoltage releases, shunt
and manoeuvring releases,
power blocks and blocking
mechanisms for the
protection against
unauthorized
changes (for MS116
series).
EATON motor breakers and protective accessories.
Motor protection breakers from Eaton include PKZM0, PKZM4 series and PKE
electronic breakers, which allow to regulate the wide range of the overload
current.
PKZM01 motor protection breakers with button drive are available for
a wide range of rating currents up to 16A. They are usually used for small
machines and devices that are preferably operated by means of pressing a
button. Many accessories can be shared with PKZM0
apparatus, e.g. enclosures with IP65 protection level
with mushroom-headed buttons. That facilitates their
use in accordance to the user demands.
PKZM4 series are automatic motor protection
breakers intended to protect drives with a rating
current up to 65A. They have a high shutoff
capability, increased to 150kA for the models with
the rating current of up to 25A. Built-in short-circuit
release with a pre-set actuation current setpoint and
overload release with regulated setting protect effi ciently both the
receiver and the power installation in this series of products.
Motor protection breakers PKE with an electronic overload module are an
interesting alternative to PKZ solutions that use the properties of bimetal.
These specifi c breakers have electronic release with wide-range settings
and offer many advantages over standard thermal protective shutoffs. Their
features are: a wide range of settings, small heat loss, the release class higher
than 10, and very accurate and time-stable characteristics of release. The
wide range of the breakers’ settings makes it possible to reduce the number of
devices in the type series, and the wide range of their functionalities ensures
high levels of fl exibility in protecting motors with a rating current of up to 65A.
For the three series of motor breakers described above, TME offers
accessories, e.g. auxiliary contacts (side and front), undervoltage releases and
shunt releases.
www.newelectronics.co.uk 22 September 2020
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