AC Molded Case Power Breaker

Pugao Factory offers a high-performance AC Molded Case Power Breaker, designed for robust circuit protection with up to 50kA breaking capacity. As a professional Manufacturer in China, we provide reliable thermal-magnetic trip units and advanced arc extinguishing systems. We welcome you to Customize your order with OEM/ODM services, ensuring tailored electrical safety solutions for industrial and commercial applications.

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Product Description

Established in 2011, Pugao Electric integrates R&D, production, and sales to deliver superior low-voltage electrical equipment. With ISO9001 certification and a 14-year track record, we provide high-performance electrical safety solutions.

What Is a AC Molded Case Power Breaker?

An AC Molded Case Power Breaker is an electrical protection device used to protect electrical circuits from damage caused by overloads or short circuits.

Our units are designed to run smoothly at rated currents (e.g., 63A) and can safely break short-circuit currents up to 50 kA (as per IEC/GB standards). It features a thermal-magnetic trip unit:

Thermal Trip: Uses a bimetallic strip to protect against overload currents with a time-delay response.
Magnetic Trip: Uses an electromagnet for immediate response to short-circuit currents.

AC Molded Case Power Breaker

Product Parameter

Type	Rated Current (A)	Pole number	Rated Insulating Voltage(V)	Rated operating voltage(V)	Ultimate short circuit breaking capacity(KA)	Servies short circuit breaking capacity(KA)	Utilization category
PLM1-63L	(6),10,16,20,25 ,32,40,50,63	3	AC 500V	400V	25	18	A
PLM1-63M	(6),10,16,20,25 ,32,40,50,63		AC 500V		50	35
PLM1-100L	(10),16,20,25,32,40, 50,63,80,100		AC 690V		35	22
PLM1-100M					50	35
PLM1-100H					85	50
PLM1-225L	100,125,160,180,200,000	4			35	25
PLM1-225M					50	35
PLM1-225H					85	50
PLM1-400L	225,250,315,400				50	35
PLM1-400M	225,250,315,400				65	42
PLM1-630L	400,500,630				50	35
PLM1-630M					65	42
PLM1-630H					100	65
PLM1-800M	630,700,800	3			70	50
PLM1-800H	630,700,800				100	65
PLM1-1250	80,010,001,250				65	32.5
PLM1-1250	80,010,001,250				65	32.5

Key Features and Capabilities

As a professional Manufacturer, Pugao ensures every AC Molded Case Power Breaker meets international quality standards. Key capabilities include:

High Breaking Capacity

Equipped with an advanced arc-extinguishing grid system to rapidly divide and quench arcs, greatly improving breaking performance up to 50kA.

Versatile Configurations

We offer OEM/ODM services. You can print your logo on the product, and our technical team can provide solutions based on your specific drawings and parameters.

Maintenance & Protection

Designed with excellent outer insulation and a safe-contact structure. The handle indicators are easy to read, ensuring secure operation and simplified maintenance.

Adjustable Trip Settings

Tailored to your requirements, allowing for precise protection against thermal overloads and magnetic short circuits.

Applications

From factory floors to commercial complexes, the AC Molded Case Power Breaker plays a critical role in modern infrastructure.

Industrial Automation & Manufacturing: Provides robust protection for three-phase equipment and manages motor starting currents.
Power Distribution: Secures essential circuits at every distribution point in commercial complexes.
Renewable Energy Systems: Protects circuits in solar and wind energy integration setups.
HVAC and Large Appliances: Manages loads for central air conditioning and heavy-duty appliances.
Generator & Generator-Sets: Ensures safety for backup power systems.
Marine & Offshore: Durable protection suitable for harsh marine environments.

FAQ

What is an MCCB's purpose?

Its primary purpose is to protect electrical circuits from damage caused by excess current (overload) or short circuits. It acts as a switch that automatically interrupts the flow of electricity when a fault is detected.

What does "Molded Case" mean?

It refers to the construction of the breaker. The internal components are encased (molded) in a durable, heat-resistant insulating material (usually plastic), which provides safety and structural integrity.

How often should maintenance be performed?

We recommend inspecting the AC Molded Case Power Breaker periodically (typically once a year) to check for loose connections, physical damage, or signs of overheating. Operational checks should be done to ensure the handle moves freely.

What are trip settings?

Trip settings define the current level at which the breaker will open. In many MCCBs, these settings can be adjusted to match the specific requirements of the load being protected.

How do I purchase from Pugao?

We are a factory based in China. You can contact us for a quote. Our payment terms typically include 30% T/T in advance, with the balance before shipment. We accept West Union and L/C as well.

AC Molded Case Power Breaker

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AC Molded Case Circuit Breaker

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Contact Info

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Address

Qiligang Industrial Zone, Liushi Town, Yueqing City, Zhejiang Province, China
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Tel

+86-18072106366
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E-mail

kevin@pugaoai.com

For inquiries about mini circuit breaker, voltage protector, changeover switch or price list, please leave your email to us and we will be in touch within 24 hours.