PWM Series
Moulded Case Circuit Breaker
The PWM Intelligent Measuring Circuit Breaker is a new type of low-voltage switchgear that integrates high-precision current sensors, measuring units, and protection units. It adopts a modular design concept that separates primary and secondary functions.
PWM Series Three Phase Switch
250A, 400A, 630A AC MCCB Moulded Case Circuit Breaker
Rated Current (A) 250 400 630
Rated Operation Voltage(V) AC400
Rated Impulse Withstand Voltage(kV) 8
Mechanical Life 7000
PWM Series Molded Case Circuit Breaker – Advanced Protection for Power Distribution
The PWM Series Molded Case Circuit Breaker by Powint Electric represents the latest innovation in circuit breaker technology. Known for its compact design, high breaking capacity, and fast arc extinction, this breaker offers superior protection accuracy, making it an ideal solution for modern power distribution systems. It also serves as an upgraded alternative to traditional plastic external circuit breakers.
Key Features:
Small Size, High Efficiency: Optimized for space-saving while providing reliable protection.
High Braking Capacity & Short Arcing Time: Ensures quick response and reliable circuit protection.
Accurate Protection Functions: Includes overload, short circuit, and under-voltage protection to safeguard circuits and power equipment.
Versatile Application: Suitable for AC50Hz circuits with rated operating voltages up to 400V and operating currents up to 800A. Ideal for infrequent motor starting and conversion.
Compliance: Fully compliant with IEC60947-2 standards, ensuring high-quality and reliable operation.
| Specification | PWM250 | PWM400、630 |
|---|---|---|
| Rated Frame Current Inm（A） | 250 | 400、630 |
| Rated Current In（A） | 250 | 400、630 |
| Overload Long Delay Setting Current Ir（A） | 80、100、125、160、200、250 | 160、180、200、225、250、280、315、350、375、400、450、500、560、630 |
| Rated Operational Voltage Ue（V） | AC400 | AC400 |
| Rated Insulation Voltage Ui（V） | 1000 | 1000 |
| Rated Impulse Withstand Voltage Uimp（kV） | 8 | 8 |
| Number of Poles | 3 | 3 |
| Rated Ultimate Short-Circuit Breaking Capacity Icu（kA） | 36 | 65 |
| Rated Service Short-Circuit Breaking | 25 | 50 |
| Rated Short-Time Withstand Current Icw（kA/s） | 3 | 400：5；630:8 |
| Usage Category | A | B |
1.Operating Ambient Temperature: -40°C to +70°C, with an average temperature not exceeding +35°C within a 24-hour period.
2.Operating Ambient Humidity: Monthly average maximum relative humidity below 93%, with no condensation on the surface of the enclosure.
3.Operating Environment: No corrosive gases that could damage metals or insulation, no significant dust and mold, no sources of severe vibration or shock, and no materials posing fire or explosion hazards.
4.Altitude: Installation site altitude ≤ 2000m.
5.Storage and Transportation Extreme Ambient Temperature: -40°C to +75°C.
Advantages of the PWM Series Circuit Breakers
- Compact Design for Space Efficiency
Maximize your distribution space with the PWM Series Circuit Breakers, known as the slimmest and most compact circuit breakers in their class. Ideal for energy sub-distribution or incoming power protection in residential and commercial buildings, their streamlined design ensures efficient use of valuable space. - Small Size, Powerful Performance
The PWM Series 160 frame size stands out as the smallest yet most powerful option compared to other brands. This compact yet robust design delivers exceptional protection and performance without compromising on space efficiency. - Adjustable Trip Settings
MCCBs often feature adjustable trip settings for overload and short-circuit protection, offering flexibility to suit specific circuit requirements.
