Huyu HUM8L-100H/3P 50A Molded Case Leakage Protection Circuit Breaker

Brand:
Series:
HUM8L
How It Works:
Manual
Frame Current:
100A
Protection Function:
LI
Wiring Method:
Front panel wiring
Poles:
3P
Installation:
Fixed
Breaking Capacity:
85KA
Model:
HUM8L-100H/3P 50A
Order Number:
1024700003
Description:
Huyu Molded Case Leakage Protection Circuit Breaker HUM8L-100H/3P 50A, Fixed, Manual, 85KA, Front Panel Wiring, 3P, Frame Current 100A

Product parameters

Product attributes Attribute value Filter product attributes
Brand: Huyu
Series: HUM8L
How It Works: Manual
Frame Current: 100A
Protection Function: LI
Wiring Method: Front panel wiring
Poles: 3P
Installation: Fixed
Breaking Capacity: 85KA
Products with the same attribute : 0
Show details

Series Overview

Outline​

​Scope of Application​

  • HM8L (hereinafter referred to as the Circuit Breaker) is suitable for use in power systems with an AC frequency of 50Hz, rated voltage up to 400V, and rated current up to 630A. It is used to distribute electrical energy and protect the power system from hazards caused by overloads, short circuits, and other faults. It can also be used to control motors for infrequent operations.

The residual current (earth leakage) protection function of this circuit breaker provides indirect contact protection against fatal electric shocks to persons. It also prevents electrical fires caused by persistent earth fault currents that cannot be detected by overcurrent protection devices.

The rated residual operating current of this circuit breaker is adjustable, and the residual current protection operating time is also adjustable. Therefore, selective protection in the event of an earth leakage can be achieved within the distribution system. When the rated residual operating current is set to 30mAh, this circuit breaker can also be used as a device providing protection against direct contact in the event of failure of the relevant protective device.

● ​​Classification according to DC component:​​ ​​Type AC:​​ Ensures tripping for residual sinusoidal currents without a DC component, whether suddenly applied or slowly rising. ​​Type A:​​ Ensures tripping for residual sinusoidal AC currents with a specified residual pulsating DC component, whether suddenly applied or slowly rising.

● ​​Complies with Standards:​​ GB/T 14048.2, IEC 60947-2, GB/26829, IEC 755.

​Normal Service Conditions​

● Upper limit of ambient air temperature not exceeding +40°C, lower limit not lower than -5°C, average temperature over any 24-hour period not exceeding +35°C.

● Relative humidity of air: ≤ 95%.
● Altitude not exceeding 2000m; derating is required for altitudes above 2000m.
● ​​Pollution Degree:​​ ​​Level 3.​​ No explosion hazard in the surrounding atmosphere, and no gases or conductive dust that corrode metal or destroy insulation.
● ​​Installation Category:​​ ​​III.​
● The circuit breaker's "1, 3, 5, N1" terminals are for the power supply connection; the "2, 4, 6, N2" terminals are for the load connection. Reverse connection is not permitted.
● The mounting surface of the circuit breaker shall be perpendicular to the horizontal plane. The basic mounting method is vertical installation with the power supply end at the top and the load end at the bottom. Horizontal mounting is also permissible.

Rachel

Industrial Control Sales Specialist: Focuses on delivering high-performance, cost-effective industrial control products. Offers end-to-end one-stop procurement support—covering rapid quotation, streamlined order fulfillment, and responsive after-sales service—to simplify clients’ procurement processes. Email: Anthony@icxsg.com

We offer competitive product pricing. For fast support, send your email, phone, address, and the product model & quantity you want—we’ll reach out quickly!

We typically respond via email within one business day! You can also contact us at Anthony@icxsg.com

Message*
email*
address
File upload:
Attention: Upload file types:. jpg,. png,. jpg,. pdf,. doc,. docx.
Upload file sizes up to 2 MB

Latest Articles

  • This article will focus on two industry giants—Siemens SINAMICS drive series and ebmpapst smart fans—and delve into how they are defining the performance standards for modern industry.
  • In today’s connected manufacturing environment, industrial communication protocols form the backbone of modern automation. They enable devices to exchange data, integrate seamlessly, and support remote monitoring across global networks. For industrial suppliers serving international customers, understanding and implementing mainstream communication standards is crucial for product compatibility and competitiveness.
  • As manufacturing shifts toward high precision, high flexibility, and intelligent automation, traditional motor control methods are no longer sufficient. AC servo drive systems have emerged as the preferred choice for CNC machines, industrial robots, and automated assembly lines. This article provides an in-depth look at AC servo drive principles, selection criteria, and application advantages in precision control environments.
  • In modern industrial automation systems, the motor drive acts as the core power unit that determines the efficiency, stability, and energy consumption of the entire process. For international projects and engineering contractors, selecting the right Variable Frequency Drive (VFD) is crucial. This article provides a detailed and practical guide to understanding how VFDs work, how to select them correctly, and how to avoid common mistakes during implementation.
  • Intelligent motor control systems integrate sensors, controllers, frequency converters, and communication modules into a unified platform capable of real-time decision-making. This shift marks the transition from simple control to smart orchestration—where data, algorithms, and hardware collaborate to maximize performance and reliability.
  • A frequency converter regulates the speed and torque of an AC motor by adjusting the frequency and voltage supplied to it. This not only enhances process control but also significantly reduces power consumption, equipment wear, and system maintenance costs.
  • In any industrial automation setup, power stability determines the overall reliability of control systems. A single voltage drop or surge can cause PLC malfunctions, sensor errors, or complete equipment shutdown. Therefore, designing a stable, efficient, and maintainable industrial power system is a fundamental task for electrical and automation engineers.
  • In the field of industrial automation, Industrial Ethernet has become a cornerstone of efficient communication, replacing many traditional fieldbus systems. Its high speed, flexibility, and openness make it an essential part of smart manufacturing and Industry 4.0. For engineers and plant operators, mastering how to deploy and optimize Industrial Ethernet networks is key to ensuring system stability, reducing downtime, and preparing for digital transformation.
  • In today’s interconnected industrial supply chains, businesses worldwide need reliable access to high-quality HVAC (Heating, Ventilation, Air Conditioning) systems, industrial control equipment, and electronic components—with fast delivery, clear technical support, and flexible sourcing solutions. As an international trade partner operated by APAC HVAC TECH PTE. LTD. and headquartered in Singapore, ICX (icxsg.com) delivers exactly that.
  • As the "first line of defense," Motor Protection Circuit Breakers (MPCBs) can minimize fault losses through accurate monitoring and rapid circuit interruption. This article provides a comprehensive analysis of MPCBs, covering technical principles, selection methods, installation and maintenance, as well as industry trends, to offer systematic solutions for industrial users.
  • The sequence of low-voltage fuses and low-voltage switches (including circuit breakers) in a circuit depends primarily on the core protection objectives of the circuit, the functional positioning of the equipment, and specific application scenarios; it is not absolutely fixed. The design of "connecting the fuse after the air switch" in machine tool distribution boxes is essentially an optimized protection logic tailored to the special power consumption needs of machine tool equipment, rather than a violation of general principles.
  • In modern industrial electrical systems, the vacuum contactor, as a key control and protection device, plays an extremely important role. With its unique arc-extinguishing method and many excellent performances, it is widely used in various power control scenarios to ensure the reliable operation of power systems. Next, let's deeply explore the working principle, structural composition, application fields and maintenance points of the vacuum contactor.​
  • As a professional engaged in overseas fan procurement, do you often encounter challenges such as difficult working condition adaptation, complex cost accounting, and delayed after-sales response during cross-border procurement? Combining 15 years of experience in serving the global fan market, we have sorted out professional solutions in three core dimensions—selection, cost, and after-sales service—based on the actual needs of overseas procurement, providing you with rigorous and practical procurement references.
  • Have you ever wondered why your home washing machine can "automatically power off after washing clothes"? Or why the factory assembly line can "feed materials first and then start stamping after 3 seconds"? Behind these scenarios of "doing things in a time sequence" lies a key component — the time relay.
  • Please read our Terms and Conditions and this Policy before accessing or using our Services. If you cannot agree with this Policy or the Terms and Conditions, please do not access or use our Services. If you are located in a jurisdiction outside the European Economic Area, by using our Services, you accept the Terms and Conditions and accept our privacy practices described in this Policy.
  • APAC HVAC TECH PTE. LTD. (hereinafter referred to as "we") is dedicated to safeguarding the privacy and security of your personal information. This Privacy Policy explains how we collect, use, and disclose your personal information when you use our website or purchase our import and export products.
  • As a core control device in industrial automation, the PLC has evolved from an early "relay replacement" to an "industrial nerve center" integrating logic control, motion control, and process control. This article will elaborate on the technical architecture, core functions, application scenarios, and development trends of PLCs, systematically sorting out their technical principles and engineering practice points.
  • The Frame Circuit Breaker, also known as the air circuit breaker (ACB), usually has a steel frame structure, and all components are installed within this frame. It can switch on, carry, and break currents under normal circuit conditions, and also has the ability to switch on, carry for a certain time, and break currents under specified abnormal circuit conditions (such as overload, short circuit, ground fault, etc.)
  • Fans, as key equipment that converts mechanical energy into gas energy, play a vital role in various fields such as industrial production, building ventilation, and energy development. This article will delve into the working principles, classification methods, performance parameters, design essentials, application fields, and future development trends of fans, presenting a comprehensive knowledge system of fan technology to readers.