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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Description Prix Current Range Number of Poles Range Breaking Capacity Terminal Type Voltage Rating Reset Method Length Width Depth Dimensions For Use With Series
N° de stock RS 395-0245
Référence fabricantGV2ME10
63,45 €
Each
Unité
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
N° de stock RS 395-0239
Référence fabricantGV2ME14
73,76 €
Each
Unité
6 → 10 A 3P TeSys 3 kA Screw 690 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
N° de stock RS 395-0251
Référence fabricantGV2ME08
63,45 €
Each
Unité
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
N° de stock RS 395-0267
Référence fabricantGV2ME07
63,45 €
Each
Unité
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
N° de stock RS 395-0217
Référence fabricantGV2ME20
79,04 €
Each
Unité
13 → 18 A 3P TeSys 3 kA Screw 690 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
N° de stock RS 246-5011
Référence fabricant3RV1041-4JA10
MarqueSiemens
225,34 €
Each
Unité
45 → 63 A 3P Sirius Innovation 50 kA Screw 690 V - 165mm 70mm 174mm 165 x 70 x 174 mm - 3RV1
N° de stock RS 395-0223
Référence fabricantGV2ME16
73,76 €
Each
Unité
9 → 14 A 3P TeSys 3 kA Screw 690 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
N° de stock RS 818-182
Référence fabricantPKZM0-6,3
MarqueEaton
74,58 €
Each
Unité
4 → 6.3 A 3P - 60 kA Screw 690 V ac - 93mm 45mm 76mm 93 x 45 x 76 mm - PKZM 0
N° de stock RS 395-0289
Référence fabricantGV2ME06
63,45 €
Each
Unité
1 → 1.6 A 3P TeSys - Screw 690 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
N° de stock RS 875-1125
Référence fabricant3RV2031-4WA10
MarqueSiemens
203,40 €
Each
Unité
42 → 52 A 3 Sirius Innovation 4 kA Screw 690 V - 140mm 55mm 149mm 140 x 55 x 149 mm Motor Protection 3RV2
N° de stock RS 492-1535
Référence fabricantPKZM01-4
MarqueEaton
58,71 €
Each
Unité
2.5 → 4 A 3P - 60 kA Screw 690 V ac - 93mm 45mm 90.5mm 93 x 45 x 90.5 mm - PKZM 01
N° de stock RS 395-0302
Référence fabricantGV2ME04
55,89 €
Each
Unité
0.4 → 0.63 A 3P TeSys - Screw 690 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
N° de stock RS 492-1529
Référence fabricantPKZM01-2,5
MarqueEaton
68,97 €
Each
Unité
1.6 → 2.5 A 3P - 60 kA Screw 690 V ac - 93mm 45mm 90.5mm 93 x 45 x 90.5 mm - PKZM 01
N° de stock RS 395-0324
Référence fabricantGV2ME02
53,42 €
Each
Unité
0.16 → 0.25 A 3P TeSys - Screw 690 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
N° de stock RS 413-1603
Référence fabricantGV2ME103
66,60 €
Each
Unité
4 → 6.3 A 3P TeSys 50 kA Cage Clamp 500 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
N° de stock RS 706-1718
Référence fabricant3RV2011-0BA10
MarqueSiemens
55,44 €
Each
Unité
0.14 → 0.2 A 3P Sirius Innovation 100 kA Screw 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - 3RV2
N° de stock RS 243-7139
Référence fabricant3RV1011-1EA10
MarqueSiemens
71,28 €
Each
Unité
2.8 → 4 A 3P Sirius Innovation 100 kA Screw 690 V - 90mm 45mm 81mm 90 x 45 x 81 mm - 3RV1
N° de stock RS 305-2206
Référence fabricantGV2P14
101,72 €
Each
Unité
6 → 10 A 3P TeSys 6 kA Screw 690 V - 89mm 44.5mm 97mm 89 x 44.5 x 97 mm - GV2P
N° de stock RS 246-4967
Référence fabricant3RV1031-4EA10
MarqueSiemens
207,00 €
Each
Unité
22 → 32 A 3P Sirius Innovation 4 kA Screw 690 V - 140mm 55mm 149mm 140 x 55 x 149 mm - 3RV1
N° de stock RS 706-1784
Référence fabricant3RV2011-1CA10
MarqueSiemens
66,33 €
Each
Unité
1.8 → 2.5 A 3P Sirius Innovation 10 kA Screw 690 V - 97mm 45mm 91mm 97 x 45 x 91 mm - 3RV2