Motor Protection Circuit Breakers

Motor protection circuit breakers act as protection devices for electric motors, monitoring the electrical supply in motor circuits of 50-60Hz. They protect against phase unbalances and losses, which are detrimental to motors, offer protection against current overload, and prevent short circuits.


What are motor protection circuit breakers used for?

Motor protection circuit breakers are useful in industrial and building applications such as chillers, compressors, heat pumps and cooling towers, to prevent damages from short circuits or power surges. In the manufacturing industry, circuit breakers interrupt electrical faults below the breaking capacity, which protects machinery and equipment from blowouts.


Types of motor protection circuit breakers

Motor protection circuit breakers come in A type or B type classifications, dependent on utilisation and function.


The A type breaker is not explicitly intended for selectivity and does not allow intentional short time delay under short circuit conditions.This means that the system interrupts immediately when current or voltage levels match the breaking capacity.


Type B breakers allow for an intentional and adjustable short time delay under short circuit conditions, which enables the system to continue for a short while with currents exceeding breaking capacity levels.


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Omschrijving Prijs Current Range Number of Poles Range Breaking Capacity Terminal Type Voltage Rating Reset Method Length Width Depth Dimensions For Use With Series
RS-stocknr. 331-3567
FabrikantRS PRO
33,79 €
Each
Aantal stuks
0.16 → 0.24 A - - - Screw 690 V - 80mm 45mm 73.5mm 80 x 45 x 73.5 mm MS25 Series XL2000
RS-stocknr. 331-3618
FabrikantRS PRO
33,79 €
Each
Aantal stuks
1 → 1.6 A - - - Screw 690 V - 80mm 45mm 73.5mm 80 x 45 x 73.5 mm MS25 Series XL2000
RS-stocknr. 331-3680
FabrikantRS PRO
47,19 €
Each
Aantal stuks
20 → 25 A - - - Screw 690 V - 80mm 45mm 73.5mm 80 x 45 x 73.5 mm MS25 Series XL2000
RS-stocknr. 121-6849
FabrikantRS PRO
28,24 €
Each
Aantal stuks
1 → 1.6 A 3 - 100 kA @ 230 V Screw 690 V Automatic 45mm 89.5mm 78.5mm 45 x 89.5 x 78.5 mm Motor Protection Switches MS32
RS-stocknr. 121-6845
FabrikantRS PRO
28,24 €
Each
Aantal stuks
0.16 → 0.25 A 3 - 100 kA @ 230 V Screw 690 V Automatic 45mm 89.5mm 78.5mm 45 x 89.5 x 78.5 mm Motor Protection Switches MS32
RS-stocknr. 331-3674
FabrikantRS PRO
47,19 €
Each
Aantal stuks
16 → 20 A - - - Screw 690 V - 80mm 45mm 73.5mm 80 x 45 x 73.5 mm MS25 Series XL2000
RS-stocknr. 121-6844
FabrikantRS PRO
28,52 €
Each
Aantal stuks
0.1 → 0.16 A 3 - 100 kA @ 230 V Screw 690 V Automatic 45mm 89.5mm 78.5mm 45 x 89.5 x 78.5 mm Motor Protection Switches MS32
RS-stocknr. 331-3668
FabrikantRS PRO
37,87 €
Each
Aantal stuks
10 → 16 A - - - Screw 690 V - 80mm 45mm 73.5mm 80 x 45 x 73.5 mm MS25 Series XL2000
RS-stocknr. 395-0245
FabrikantnummerGV2ME10
63,45 €
Each
Aantal stuks
4 → 6.3 A 3P TeSys 3 kA Screw 690 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
RS-stocknr. 395-0239
FabrikantnummerGV2ME14
73,76 €
Each
Aantal stuks
6 → 10 A 3P TeSys 3 kA Screw 690 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
RS-stocknr. 395-0251
FabrikantnummerGV2ME08
63,45 €
Each
Aantal stuks
2.5 → 4 A 3P TeSys 3 kA Screw 690 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
RS-stocknr. 395-0267
FabrikantnummerGV2ME07
63,45 €
Each
Aantal stuks
1.6 → 2.5 A 3P TeSys 3 kA Screw 690 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
RS-stocknr. 395-0217
FabrikantnummerGV2ME20
79,04 €
Each
Aantal stuks
13 → 18 A 3P TeSys 3 kA Screw 690 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
RS-stocknr. 246-5011
Fabrikantnummer3RV1041-4JA10
FabrikantSiemens
225,34 €
Each
Aantal stuks
45 → 63 A 3P Sirius Innovation 50 kA Screw 690 V - 165mm 70mm 174mm 165 x 70 x 174 mm - 3RV1
RS-stocknr. 395-0223
FabrikantnummerGV2ME16
73,76 €
Each
Aantal stuks
9 → 14 A 3P TeSys 3 kA Screw 690 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
RS-stocknr. 818-182
FabrikantnummerPKZM0-6,3
FabrikantEaton
74,58 €
Each
Aantal stuks
4 → 6.3 A 3P - 60 kA Screw 690 V ac - 93mm 45mm 76mm 93 x 45 x 76 mm - PKZM 0
RS-stocknr. 395-0289
FabrikantnummerGV2ME06
63,45 €
Each
Aantal stuks
1 → 1.6 A 3P TeSys - Screw 690 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
RS-stocknr. 395-0302
FabrikantnummerGV2ME04
55,89 €
Each
Aantal stuks
0.4 → 0.63 A 3P TeSys - Screw 690 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
RS-stocknr. 875-1125
Fabrikantnummer3RV2031-4WA10
FabrikantSiemens
203,40 €
Each
Aantal stuks
42 → 52 A 3 Sirius Innovation 4 kA Screw 690 V - 140mm 55mm 149mm 140 x 55 x 149 mm Motor Protection 3RV2
RS-stocknr. 492-1535
FabrikantnummerPKZM01-4
FabrikantEaton
58,71 €
Each
Aantal stuks
2.5 → 4 A 3P - 60 kA Screw 690 V ac - 93mm 45mm 90.5mm 93 x 45 x 90.5 mm - PKZM 01
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