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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Beskrivning Pris Current Range Number of Poles Range Breaking Capacity Terminal Type Voltage Rating Reset Method Length Width Depth Dimensions For Use With Series
RS-artikelnummer 866-1533
Tillv. art.nrXTPR001BC1
VarumärkeEaton
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0.63 → 1 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-artikelnummer 305-2177
Tillv. art.nrGV2P07
VarumärkeSchneider Electric
604,48 kr
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1.6 → 2.5 A 3P TeSys 8 kA Screw 690 V - 89mm 44.5mm 97mm 89 x 44.5 x 97 mm - GV2P
RS-artikelnummer 121-6858
VarumärkeRS PRO
509,30 kr
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25 → 32 A 3 - 25 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-artikelnummer 243-7173
Tillv. art.nr3RV1011-1JA10
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732,21 kr
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7 → 10 A 3P Sirius Innovation 50 kA Screw 690 V - 90mm 45mm 81mm 90 x 45 x 81 mm - 3RV1
RS-artikelnummer 351-5410
Tillv. art.nr140M-C2E-C20
VarumärkeAllen Bradley
857,35 kr
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14.5 → 20 A 3P - 15 kA - 415 V - 90mm 45mm 74mm 90 x 45 x 74 mm - 140M
RS-artikelnummer 818-154
Tillv. art.nrPKZM0-1,6
VarumärkeEaton
534,71 kr
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1 → 1.6 A 3P - 60 kA Screw 690 V ac - 93mm 45mm 76mm 93 x 45 x 76 mm - PKZM 0
RS-artikelnummer 706-1762
Tillv. art.nr3RV2011-0KA10
VarumärkeSiemens
584,24 kr
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0.9 → 1.25 A 3P Sirius Innovation 100 kA Screw 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - 3RV2
RS-artikelnummer 243-7088
Tillv. art.nr3RV1011-0KA10
VarumärkeSiemens
623,31 kr
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0.9 → 1.25 A 3P Sirius Innovation 100 kA Screw 690 V - 90mm 45mm 81mm 90 x 45 x 81 mm - 3RV1
RS-artikelnummer 608-8450
Tillv. art.nrGV2LE32
VarumärkeSchneider Electric
961,52 kr
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32 A 3P TeSys 3 kA Screw 690 V - 89mm 44.5mm 78.5mm 89 x 44.5 x 78.5 mm - GV2L
RS-artikelnummer 121-6854
VarumärkeRS PRO
323,69 kr
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9 → 14 A 3 - 25 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-artikelnummer 706-1752
Tillv. art.nr3RV2011-0HA10
VarumärkeSiemens
551,52 kr
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0.55 → 0.8 A 3P Sirius Innovation 100 kA Screw 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - 3RV2
RS-artikelnummer 121-6856
VarumärkeRS PRO
389,72 kr
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17 → 23 A 3 - 25 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-artikelnummer 413-1625
Tillv. art.nrGV2ME163
VarumärkeSchneider Electric
598,17 kr
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9 → 14 A 3P TeSys 6 kA Cage Clamp 500 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
RS-artikelnummer 395-0318
Tillv. art.nrGV2ME03
VarumärkeSchneider Electric
448,19 kr
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0.25 → 0.4 A 3P TeSys - Screw 690 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
RS-artikelnummer 797-5563
Tillv. art.nrEMS-DOS-T-2.4-24VDC
VarumärkeEaton
2 277,05 kr
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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-artikelnummer 413-1580
Tillv. art.nrGV2ME073
VarumärkeSchneider Electric
545,40 kr
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1.6 → 2.5 A 3P TeSys - Cage Clamp 500 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
RS-artikelnummer 121-6852
VarumärkeRS PRO
280,25 kr
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4 → 6.3 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-artikelnummer 312-5304
Tillv. art.nrPKZM0-10-T
VarumärkeEaton
646,01 kr
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6.3 → 10 A 3P - 150 kA Screw 690 V ac - 93mm 45mm 76mm 93 x 45 x 76 mm - PKZM 0
RS-artikelnummer 608-8551
Tillv. art.nrGV2RT06
VarumärkeSchneider Electric
565,10 kr
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1 → 1.6 A 3P TeSys - - 690 V - 89mm 44.5mm 78.5mm 89 x 44.5 x 78.5 mm - GV2R
RS-artikelnummer 706-1778
Tillv. art.nr3RV2011-1AA20
VarumärkeSiemens
584,24 kr
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1.1 → 1.6 A 3P Sirius Innovation 100 kA Cage Clamp 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - 3RV2
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