OEM China MS132 Low Voltage Motor Protection Circuit Breaker - 25A, 15kW, 100kA, Factory Suppliers for Industrial Safety Manufacturer, Factory
OEM China MS132 Low Voltage Motor Protection Circuit Breaker - 25A, 15kW, 100kA, Factory Suppliers for Industrial Safety Manufacturer, Factory
OEM China MS132 Low Voltage Motor Protection Circuit Breaker - 25A, 15kW, 100kA, Factory Suppliers for Industrial Safety Manufacturer, Factory
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OEM China MS132 Low Voltage Motor Protection Circuit Breaker - 25A, 15kW, 100kA, Factory Suppliers for Industrial Safety Manufacturer, Factory
OEM China MS132 Low Voltage Motor Protection Circuit Breaker - 25A, 15kW, 100kA, Factory Suppliers for Industrial Safety Manufacturer, Factory
OEM China MS132 Low Voltage Motor Protection Circuit Breaker - 25A, 15kW, 100kA, Factory Suppliers for Industrial Safety Manufacturer, Factory

OEM China MS132 Low Voltage Motor Protection Circuit Breaker - 25A, 15kW, 100kA, Factory Suppliers for Industrial Safety Manufacturer, Factory

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The MS132-25 is an exceptional motor protection circuit breaker designed for demanding industrial environments, available from trusted China suppliers and factories. This high-performance device offers superior motor protection for motors up to 15kW at 400V, featuring a 25A adjustable current setting. With a Class 10 tripping mechanism and an impressive 100kA breaking capacity at 400V, it effectively manages high fault currents safely. The MS132-25 incorporates advanced thermal-magnetic protection, phase loss detection, and temperature compensation, operating efficiently within a temperature range of -25°C to +60°C. Its compact 45mm design is compatible with standard DIN rails, while visible trip indication and a lockable handle enhance safety. This circuit breaker seamlessly integrates with ABB contactors and soft starters, making it an ideal choice for automation applications. Trust in the MS132-25 for robust motor protection and reliable performance from leading suppliers in China.

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Product Description

Type and Meaning
MS132 Type Designation Key
1 Series Number
MS: Thermal-magnetic trip
MO: Magnetic-only trip
2 Rated current, trip class and breaking capacity
116-32A, Class 10A (10/16/30/50kA)
132-32A, Class 10A (25/50/100kA)
450-50A, Class 10A (50kA)
451-50A, Class 20A (50kA)
495-100A, Class 10A (50kA)
496-100A, Class 20A (100kA)
497-100A, Class 10A (100kA)
3 Thermal protection setting value
Product Features
Model MS132
Thermal protection and electromagnetic protection Yes
Electromagnetic protection -
Phase failure protection Yes
Switch position… ON/OFF/TRIP
Magnetic release indication YES
Lockable handle, no accessories required YES
Isolation function Yes
Width 45mm
Rated operating current 0.16...32A
Current setting range 0.1...32A
Ambient air temperature -25...+60°C*)
Product Display
MS132 LV Motor Protection Circuit Breaker Front View
MS132 LV Motor Protection Circuit Breaker Back View
Technical Parameters
Motor Rated Power Thermal Trip Setting Range Type Short-Circuit Breaking Capacity
Icu Ics
0.03 kW 0.1…0.16A MS132-0.16 100 kA 100 kA
0.06 kW 0.16…0.25A MS132-0.25 100 kA 100 kA
0.09 kW 0.25…0.4A MS132-0.4 100 kA 100 kA
0.18 kW 0.4…0.63A MS132-0.63 100 kA 100 kA
0.25 kW 0.63…1.0A MS132-1.0 100 kA 100 kA
0.55 kW 1.0…1.6A MS132-1.6 100 kA 100 kA
0.75 kW 1.6…2.5A MS132-2.5 100 kA 100 kA
1.5 kW 2.5…4.0A MS132-4.0 100 kA 100 kA
2.2 kW 4.0…6.3A MS132-6.3 100 kA 100 kA
4.0 kW 6.3...10A MS132-10 100 kA 100 kA
5.5 kW 8…12A MS132-12 100 kA 100 kA
7.5 kW 10…16A MS132-16 / MS165-16 100 kA 100 kA
7.5 kW 14...20A MS165-20 100 kA 100 kA
7.5 kW 16…20A MS132-20 100 kA 100 kA
11 kW 18…25A MS165-25 100 kA 75 kA
11 kW 20…25A MS132-25 50 kA 50 kA
15 kW 25…32A MS132-32 50 kA 25 kA
15 kW 23...32A MS165-32 100 kA 75 kA
22 kW 30…42A MS165-42 50 kA 25 kA
22 kW 40...54A MS165-54 50 kA 25 kA
30 kW 52…65A MS165-65 50 kA 25 kA
Outline and Installation Dimension
MS132 Dimensional Drawing and Outline Specs
Frequently Asked Questions
What is the difference between the MS132 (MS series) and MO series motor protection circuit breakers?
The MS series (such as MS132) provides comprehensive thermal-magnetic protection covering both overload (thermal) and short-circuit (magnetic) scenarios. Conversely, the MO series is designed with magnetic-only trip units, typically utilized in environments where an external thermal overload mechanism already exists.
What is the current setting range of the MS132 motor protection circuit breaker?
The MS132 supports a thermal trip setting range spanning from 0.1A to 32A and a rated operational current spectrum of 0.16A to 32A. This broad range makes it suited for standard motors from 0.03 kW up to 15 kW.
Does the MS132 support phase failure protection?
Yes, the MS132 unit integrates built-in phase failure sensitivity, safeguarding connected electric motors against overheating and catastrophic failure caused by unbalanced phase conditions or single-phasing.
What are the switch positions available on the MS132?
The breaker features a 3-position rotary handle indicating ON, OFF, and TRIP. The dedicated TRIP state clearly differentiates between intentional manual cutoffs and emergency fault operations, complemented by a distinct magnetic release indicator.
What is the maximum short-circuit breaking capacity (Icu) of the MS132?
The MS132 series achieves an ultimate short-circuit breaking capacity (Icu) up to 100 kA at 400V for models between MS132-0.16 and MS132-20, maintaining robust performance without the requirement of back-up fuses for high-fault zones.
Can the MS132 handle be locked without additional accessories?
Yes, the rotary mechanism comes equipped with an integrated padlockable design in the OFF position, enabling straightforward lockout/tagout (LOTO) maintenance procedures directly without ordering extra brackets or accessories.

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