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. 818-132
Fabrikantnummer072733 | PKZM0-0,63
FabrikantEaton
56,76 €
Each
Aantal stuks
0.4 → 0.63 A 3P - 60 kA Screw 690 V ac - 93mm 45mm 76mm 93 x 45 x 76 mm - PKZM 0
RS-stocknr. 124-3101
Fabrikantnummer3RV2021-1DA10
FabrikantSiemens
69,21 €
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2.2 → 3.2 A 3 Sirius Innovation 100 kA @ 400 V ac Screw 690 V ac Manual 45mm 96.9mm 97mm 45 x 97 x 96.9 mm Three Phase Motors SRV2
RS-stocknr. 246-4989
Fabrikantnummer3RV1031-4GA10
FabrikantSiemens
268,64 €
Each
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36 → 45 A 3P Sirius Innovation 4 kA Screw 690 V - 140mm 55mm 149mm 140 x 55 x 149 mm - 3RV1
RS-stocknr. 243-7094
Fabrikantnummer3RV1011-1AA10
FabrikantSiemens
67,86 €
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1.1 → 1.6 A 3P Sirius Innovation 100 kA Screw 690 V - 90mm 45mm 81mm 90 x 45 x 81 mm - 3RV1
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. 305-2228
FabrikantnummerGV2P20
101,72 €
Each
Aantal stuks
13 → 18 A 3P TeSys 4 kA Screw 690 V - 89mm 44.5mm 97mm 89 x 44.5 x 97 mm - GV2P
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. 706-1819
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. 706-1774
Fabrikantnummer3RV2011-1AA10
FabrikantSiemens
63,54 €
Each
Aantal stuks
1.1 → 1.6 A 3P Sirius Innovation 100 kA Screw 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - 3RV2
RS-stocknr. 818-176
Fabrikantnummer072737 | PKZM0-4
FabrikantEaton
63,70 €
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. 706-1822
Fabrikantnummer3RV2011-1HA10
FabrikantSiemens
66,33 €
Each
Aantal stuks
5.5 → 8 A 3P Sirius Innovation 6 kA Screw 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - 3RV2
RS-stocknr. 818-160
Fabrikantnummer072736 | PKZM0-2,5
FabrikantEaton
63,70 €
Each
Aantal stuks
1.6 → 2.5 A 3P - 60 kA Screw 690 V ac - 93mm 45mm 76mm 93 x 45 x 76 mm - PKZM 0
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. 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. 797-5572
Fabrikantnummer192394 | EMS2-ROS-T-3-24VDC
FabrikantEaton
133,95 €
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. 395-0194
FabrikantnummerGV2ME32
136,17 €
Each
Aantal stuks
24 → 32 A 3P TeSys 3 kA Screw 690 V Manual 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm Motor Protection GV2M
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
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. 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. 866-1307
FabrikantnummerXTPR6P3BC1
FabrikantEaton
72,12 €
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 - -
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