ABB MS116, MS132, MS165 Users Manual
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MANUAL MOTOR STARTER GUIDE
Manual motor starter
MS116, MS132 and MS165
MANUAL MOTOR STARTER GUIDE
1.7.3 European Directives referred to ATEX
Commonly referred to as ATEX, from the French “ATmosphères EXplosibles”, this European Directives is a combination of two EU directives: The Worker Protection Directive 1999/92/EC and the Product Directive 2014/34/EU. This
provides guidelines similar to the IECEx system, with a few exceptions, and without the certification of service facilities and certification of personnel competencies. Compliance with the “Essential Health and Safety Requirements”
described in the directives is mandatory within the European Union countries. The easiest way to show compliance is
to follow harmonized standards.
1.7.4 Potentially explosive atmospheres groups, zones, categories and devices
Within industries, all potentially explosive atmospheres are required to have an area classification referred to as the
zone system. The zone system is used all over the world and nowadays also accepted as an alternative system in
North America.
Authorities normally determine the area, but it can also be performed by a third party; a notified body or other expert. It is the owner’s responsibility to ensure that the classification of their site is performed before suitable
products can be selected and installed at the location.
Globally, a zone system is used to classify potentially explosive areas. The Worker Protection Directive 1999/EC and
the international standards IEC / EN 60079-10-x define these zones. In all cases, zone classification for potentially
explosive atmospheres, zones, categories and devices are the responsibility of the owner of the site where the potentially explosive atmosphere exists.
There are 6 zones:
− Zone 0 (for gas) and 20 (for dust), where there is a continuous presence of an explosive atmosphere.
− Zone 1 (for gas) and 21 (for dust), where there is an occasional occurrence of a potentially explosive atmos-
phere.
− Zone 2 (for gas) and 22 (for dust), where potentially explosive atmospheres can occur by accident, not during
normal operation.
Figure 1: Potentially explosive atmosphere groups, zones, categories and devices. “G” = Gas; “D” = Dust
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MANUAL MOTOR STARTER GUIDE
2. General product overview
2.1 Basic function
Manual motor starters protect the motor and the installation against short-circuits and overloads. They are three
pole electro-mechanical protection devices with a release for overload protection and short-circuit protection. Furthermore, they provide a disconnect function for safe isolation of the installation and the power supply and the can
be used for switching loads ON and OFF manually.
Power terminals
They allow the connection of up to two conductors with different
cross-sections for the main.
ON/OFF handle (operator)
For switching ON and OFF; indication of a possible trip; with integrated shut-off device. Switching on and off must be done quickly and
without interruption.
Current setting dial
The dial makes it easy to set the device to the rated motor current.
Label for marking
TEST-Function
Allows testing of the trigger mechanism.
DIN rail mounting
Allows mounting the device on DIN rails 35x15 mm and 35x7.5 mm.
Figure 2: Basic function shown on MS132
Manual motor starters are approved according IEC / EN 60947-2, IEC / EN 60947-4-1 and UL 60947-4-1A (previously
UL 508). The protection function is realized with the following sub-functions:
− overload protection
− short-circuit protection
− phase loss sensitivity
Upon detection of a fault, the manual motor starter disconnects all phases from the supply, directly isolating the
protected load. In addition, manual motor starters increase the device reliability by reacting quickly, protecting
against damage to the load-side circuits and motor by operating within milliseconds following a short-circuit fault.
The term “manual motor starter” is not directly stated in either standard, with the terms for the UL “Manual Motor
Controller” or “Combination Motor Controller” used as these terms refer to these devices. For the International Electrotechnical Commission (IEC), these devices are referred to as “motor protection circuit-breaker (MPCB)” or simply
“circuit- breakers”.
Other common aliases for a manual motor starter include:
− motor-protective circuit-breakers (MPCB)
− manual motor protectors (MMP)
− manual motor controllers (MMC)
− manual starter protectors (MSP)
− motor circuit protectors (MCP)
− motor protection (MP)
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