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. 400-1439
FabrikantnummerGV2ME21
79,20 €
Each
Aantal stuks
17 → 23 A 3P TeSys 3 kA Screw 690 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
RS-stocknr. 706-1875
Fabrikantnummer3RV2021-4EA10
FabrikantSiemens
124,20 €
Each
Aantal stuks
27 → 32 A 3P Sirius Innovation 4 kA Screw 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - -
RS-stocknr. 706-1796
Fabrikantnummer3RV2011-1DA10
FabrikantSiemens
66,33 €
Each
Aantal stuks
2.2 → 3.2 A 3P Sirius Innovation 10 kA Screw 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - 3RV2
RS-stocknr. 818-176
FabrikantnummerPKZM0-4
FabrikantEaton
74,58 €
Each
Aantal stuks
2.5 → 4 A 3P - 60 kA - 690 V ac - 93mm 45mm 76mm 93 x 45 x 76 mm - PKZM 0
RS-stocknr. 706-1819
Fabrikantnummer3RV2011-1GA10
FabrikantSiemens
66,33 €
Each
Aantal stuks
4.5 → 6.3 A 3P Sirius Innovation 6 kA Screw 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - 3RV2
RS-stocknr. 818-148
FabrikantnummerPKZM0-1
FabrikantEaton
71,28 €
Each
Aantal stuks
0.63 → 1 A 3P - 60 kA Screw 690 V ac - 93mm 45mm 76mm 93 x 45 x 76 mm - PKZM 0
RS-stocknr. 395-0194
FabrikantnummerGV2ME32
136,17 €
Each
Aantal stuks
24 → 32 A 3P TeSys 3 kA Screw 690 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
RS-stocknr. 413-1596
FabrikantnummerGV2ME083
66,60 €
Each
Aantal stuks
2.5 → 4 A 3P TeSys - Cage Clamp 500 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
RS-stocknr. 755-2892
Fabrikantnummer3RV2021-4NA10
FabrikantSiemens
126,96 €
Each
Aantal stuks
28 A 3P Sirius Innovation 55 kA Screw 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - -
RS-stocknr. 608-8517
FabrikantnummerGV2P04
80,66 €
Each
Aantal stuks
0.4 → 0.63 A 3P TeSys 100 kA Screw 690 V - 89mm 44.5mm 97mm 89 x 44.5 x 97 mm - GV2P
RS-stocknr. 797-5572
FabrikantnummerEMS-ROS-T-2.4-24VDC
FabrikantEaton
156,00 €
Each
Aantal stuks
0.18 → 2.4 A 1 ATEX 3 A Screw 24 V dc, 550 V ac Manual 123.5mm 157mm 30mm 123.5 x 157 x 30 mm - -
RS-stocknr. 351-5533
Fabrikantnummer140M-F8E-C45
FabrikantAllen Bradley
240,00 €
Each
Aantal stuks
32 → 45 A - - 65 kA Screw 575 V - 110mm 54mm 109.5mm 110 x 54 x 109.5 mm - 140M
RS-stocknr. 608-8309
FabrikantnummerGV2L08
73,33 €
Each
Aantal stuks
2.5 → 4 A, 4 → 6 A 3P TeSys 4 kA Screw 690 V - 89mm 44.5mm 97mm 89 x 44.5 x 97 mm - GV2L
RS-stocknr. 305-2199
FabrikantnummerGV2P10
85,55 €
Each
Aantal stuks
4 → 6.3 A 3P TeSys 6 kA Screw 690 V - 89mm 44.5mm 97mm 89 x 44.5 x 97 mm - GV2P
RS-stocknr. 706-1800
Fabrikantnummer3RV2011-1EA10
FabrikantSiemens
66,33 €
Each
Aantal stuks
2.8 → 4 A 3P Sirius Innovation 6 kA Screw 690 V - 109mm 45mm 91mm 109 x 45 x 91 mm - 3RV2
RS-stocknr. 122-0732
FabrikantnummerMPW18-3-D063
FabrikantWEG
53,70 €
Each
Aantal stuks
4 → 6.3 A 3 - 100 kA/415V Screw 690 V Manual 90mm 45mm 77mm 44.8 x 77 x 97 mm Motors MPW18
RS-stocknr. 211-4482
FabrikantnummerPKZM0-20
FabrikantEaton
93,06 €
Each
Aantal stuks
16 → 20 A 3P - 40 kA Screw 690 V ac - 93mm 45mm 76mm 93 x 45 x 76 mm - PKZM 0
RS-stocknr. 246-4894
Fabrikantnummer3RV1021-1KA10
FabrikantSiemens
82,16 €
Each
Aantal stuks
9 → 12.5 A 3P Sirius Innovation 100 kA Screw 690 V - 97mm 45mm 96mm 97 x 45 x 96 mm - 3RV1
RS-stocknr. 866-1307
FabrikantnummerXTPR6P3BC1
FabrikantEaton
144,00 €
Each
Aantal stuks
4 → 6.3 A 3P - 25 A@ 250 V dc, 32 A@ 690 V ac Screw 690 V ac Manual 45mm 93mm 94mm 45 x 93 x 94 mm - -
RS-stocknr. 706-1762
Fabrikantnummer3RV2011-0KA10
FabrikantSiemens
63,54 €
Each
Aantal stuks
0.9 → 1.25 A 3P Sirius Innovation 100 kA Screw 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - 3RV2
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