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.


...
อ่านเพิ่มเติม อ่านน้อยกว่า

คัดกรอง / Filters

กำลังดูสินค้า 1 - 20 รายการจาก 441 รายการ / Viewing 1 - 20 of 441 products
ผลการค้นหาต่อหน้า / Results Per Page
รายละเอียดสินค้า / Description ราคา / Price Current Range Number of Poles Range Breaking Capacity Terminal Type Voltage Rating Reset Method Length Width Depth Dimensions For Use With Series
RS Stock No. 331-3668
Brand :RS PRO
THB1,706.79
Each
Units
10 → 16 A - - - Screw 690 V - 80mm 45mm 73.5mm 80 x 45 x 73.5 mm MS25 Series XL2000
RS Stock No. 121-6847
Brand :RS PRO
THB876.88
Each
Units
0.4 → 0.63 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 Stock No. 331-3567
Brand :RS PRO
THB1,053.52
Each
Units
0.16 → 0.24 A - - - Screw 690 V - 80mm 45mm 73.5mm 80 x 45 x 73.5 mm MS25 Series XL2000
RS Stock No. 121-6846
Brand :RS PRO
THB876.88
Each
Units
0.25 → 0.4 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 Stock No. 331-3630
Brand :RS PRO
THB1,165.29
Each
Units
2.4 → 4 A - - - Screw 690 V - 80mm 45mm 73.5mm 80 x 45 x 73.5 mm MS25 Series XL2000
RS Stock No. 331-3652
Brand :RS PRO
THB1,399.51
Each
Units
6 → 10 A - - - Screw 690 V - 80mm 45mm 73.5mm 80 x 45 x 73.5 mm MS25 Series XL2000
RS Stock No. 121-6845
Brand :RS PRO
THB876.88
Each
Units
0.16 → 0.25 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 Stock No. 331-3646
Brand :RS PRO
THB1,165.29
Each
Units
4 → 6 A - - - Screw 690 V - 80mm 45mm 73.5mm 80 x 45 x 73.5 mm MS25 Series XL2000
RS Stock No. 121-6848
Brand :RS PRO
THB876.88
Each
Units
0.63 → 1 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 Stock No. 121-6852
Brand :RS PRO
THB876.88
Each
Units
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 Stock No. 121-6849
Brand :RS PRO
THB876.88
Each
Units
1 → 1.6 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 Stock No. 331-3551
Brand :RS PRO
THB1,113.34
Each
Units
0.1 → 0.16 A - - - Screw 690 V - 80mm 45mm 73.5mm 80 x 45 x 73.5 mm MS25 Series XL2000
RS Stock No. 331-3589
Brand :RS PRO
THB1,113.79
Each
Units
0.4 → 0.6 A - - - Screw 690 V - 80mm 45mm 73.5mm 80 x 45 x 73.5 mm MS25 Series XL2000
RS Stock No. 331-3618
Brand :RS PRO
THB1,165.29
Each
Units
1 → 1.6 A - - - Screw 690 V - 80mm 45mm 73.5mm 80 x 45 x 73.5 mm MS25 Series XL2000
RS Stock No. 331-3595
Brand :RS PRO
THB1,138.87
Each
Units
0.6 → 1 A - - - Screw 690 V - 80mm 45mm 73.5mm 80 x 45 x 73.5 mm MS25 Series XL2000
RS Stock No. 121-6856
Brand :RS PRO
THB1,219.48
Each
Units
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 Stock No. 121-6850
Brand :RS PRO
THB876.88
Each
Units
1.6 → 2.5 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 Stock No. 331-3573
Brand :RS PRO
THB1,113.79
Each
Units
0.24 → 0.4 A - - - Screw 690 V - 80mm 45mm 73.5mm 80 x 45 x 73.5 mm MS25 Series XL2000
RS Stock No. 121-6858
Brand :RS PRO
THB1,578.65
Each
Units
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 Stock No. 121-6857
Brand :RS PRO
THB1,353.83
Each
Units
20 → 27 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
Related Products
Professional range of motor protection switches from the ...
Description:
Professional range of motor protection switches from the MS32 series. The switches can be either vertically or horizontally mounted onto 35 mm DIN Rail. The switches incorporate an automatic switch-off at current and thermal and magnetic releases. 35 mm DIN ...
SM1 is a series of motor protection circuit ...
Description:
SM1 is a series of motor protection circuit breakers with an integrated magnetic trip indicator which avoid closing operations during short-circuit conditions.This range of circuit breakers features thermal and magnetic releases and high breaking capacity.
Protecting your motors from faults such as an ...
Description:
Protecting your motors from faults such as an overload of high voltage, short circuits, or relay shutdowns is vital in an age where any downtime can be detrimental to a business and its operations. Schneider Electric has built a reliable, ...
Modular Motor Protective Circuit Breakers designed for use ...
Description:
Modular Motor Protective Circuit Breakers designed for use with add-on contactor modules and accessories (see below) which provide isolation, short circuit and thermal protection. The units are DIN-rail mounting and part of the xStart family of control gear products, and ...