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.


...
Read more Read less

Filter

Visar 1 - 20 av 28 produkter
Resultat per sida
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 711-6442
Tillv. art.nrMS132-0.16
VarumärkeABB
642,11 kr
Each
Enheter
- 3P - - - 690 V ac - - - - - - MS132
RS-artikelnummer 764-9084
Tillv. art.nrMS116-25
VarumärkeABB
930,60 kr
Each
Enheter
20 → 25 A 3 MS Range 15 kA Screw 690 V ac - 97.8mm 45mm 86.6mm 97.8 x 45 x 86.6 mm - MS116
RS-artikelnummer 711-6480
Tillv. art.nrMS132-25
VarumärkeABB
1 163,25 kr
Each
Enheter
- 3P - - - 690 V ac - - - - - - MS132
RS-artikelnummer 711-6483
Tillv. art.nrMS132-12
VarumärkeABB
888,72 kr
Each
Enheter
- 3P - - - 690 V ac - - - - - - MS132
RS-artikelnummer 711-6486
Tillv. art.nrMS132-20
VarumärkeABB
1 005,05 kr
Each
Enheter
- 3P - - - 690 V ac - - - - - - MS132
RS-artikelnummer 445-0320
Tillv. art.nrMS116-0.63
VarumärkeABB
516,48 kr
Each
Enheter
- 3P - - - 690 V ac - - - - - - MS116
RS-artikelnummer 445-0386
Tillv. art.nrMS116-6.3
VarumärkeABB
604,89 kr
Each
Enheter
- 3P - - - 690 V ac - - - - - - MS116
RS-artikelnummer 711-6461
Tillv. art.nrMS132-1.6
VarumärkeABB
725,87 kr
Each
Enheter
- 3P - - - 690 V ac - - - - - - MS132
RS-artikelnummer 445-0409
Tillv. art.nrMS116-16
VarumärkeABB
702,60 kr
Each
Enheter
- 3P - - - 690 V ac - - - - - - MS116
RS-artikelnummer 711-6452
Tillv. art.nrMS132-1.0
VarumärkeABB
725,87 kr
Each
Enheter
- 3P - - - 690 V ac - - - - - - MS132
RS-artikelnummer 445-0336
Tillv. art.nrMS116-1.0
VarumärkeABB
604,89 kr
Each
Enheter
- 3P - - - 690 V ac - - - - - - MS116
RS-artikelnummer 711-6458
Tillv. art.nrMS132-0.63
VarumärkeABB
642,11 kr
Each
Enheter
- 3P - - - 690 V ac - - - - - - MS132
RS-artikelnummer 445-0358
Tillv. art.nrMS116-2.5
VarumärkeABB
604,89 kr
Each
Enheter
- 3P - - - 690 V ac - - - - - - MS116
RS-artikelnummer 711-6468
Tillv. art.nrMS132-4.0
VarumärkeABB
725,87 kr
Each
Enheter
- 3P - - - 690 V ac - - - - - - MS132
RS-artikelnummer 711-6470
Tillv. art.nrMS132-10
VarumärkeABB
828,23 kr
Each
Enheter
- 3P - - - 690 V ac - - - - - - MS132
RS-artikelnummer 445-0364
Tillv. art.nrMS116-4.0
VarumärkeABB
604,89 kr
Each
Enheter
- 3P - - - 690 V ac - - - - - - MS116
RS-artikelnummer 445-0342
Tillv. art.nrMS116-1.6
VarumärkeABB
604,89 kr
Each
Enheter
- 3P - - - 690 V ac - - - - - - MS116
RS-artikelnummer 711-6499
Tillv. art.nrMS132-32
VarumärkeABB
1 367,98 kr
Each
Enheter
- 3P - - - 690 V ac - - - - - - MS132
RS-artikelnummer 711-6464
Tillv. art.nrMS132-2.5
VarumärkeABB
725,87 kr
Each
Enheter
- 3P - - - 690 V ac - - - - - - MS132
RS-artikelnummer 486-3518
Tillv. art.nr1SAM250000R1012
VarumärkeABB
702,60 kr
Each
Enheter
- 3P - - - 690 V ac - - - - - - ISAM