WEG UMBW-4B2-1 - MINI CIRCUIT BREAKER UMBW-4B2-1
WEG

UMBW-4B2-1

Alternate Item Number: 14360494

UPC: 7909492436324

Contact for Pricing

Overview

The **WEG UMBW-4B2-1 Mini Circuit Breaker** is a high-performance electrical protection device engineered for industrial environments where reliability and precision are critical. Designed by WEG, a global leader in electrical solutions, this compact circuit breaker delivers robust overcurrent and short-circuit protection to safeguard sensitive equipment, machinery, and personnel. Built to meet stringent international safety standards, the UMBW-4B2-1 ensures consistent performance even in demanding industrial applications, from manufacturing plants to automation systems. **Key Features and Benefits:** - **Compact and Space-Efficient Design:** The UMBW-4B2-1’s slim profile allows for easy integration into tight control panels, switchgear, and machinery enclosures, optimizing space without compromising functionality. This makes it an ideal choice for modern industrial setups where panel real estate is at a premium. - **Superior Overcurrent and Short-Circuit Protection:** Engineered with advanced thermal-magnetic tripping mechanisms, the UMBW-4B2-1 responds rapidly to fault conditions, preventing damage to connected equipment and reducing downtime. Its precise tripping characteristics ensure reliable operation across a wide range of load conditions. - **Durable Construction for Harsh Environments:** Constructed from high-quality materials, this mini circuit breaker is built to withstand dust, moisture, vibrations, and temperature fluctuations common in industrial settings. Its rugged design ensures long-term reliability, reducing maintenance costs and extending service life. - **Easy Installation and Maintenance:** The UMBW-4B2-1 features user-friendly mounting options, including DIN rail compatibility, which simplifies installation and replacement. Its modular design allows for quick access to internal components, streamlining maintenance and minimizing operational disruptions. - **Compliance with Global Safety Standards:** WEG’s commitment to safety is reflected in the UMBW-4B2-1, which meets or exceeds international certifications such as IEC, UL, and CE. This ensures seamless integration into global industrial systems while providing peace of mind for engineers and facility managers. **Typical Applications:** The WEG UMBW-4B2-1 Mini Circuit Breaker is widely used in a variety of industrial applications, including: - **Machinery and Equipment Protection:** Ideal for safeguarding motors, drives, and control systems in manufacturing, material handling, and processing industries. - **Control Panels and Switchgear:** Perfect for use in low-voltage distribution panels, motor control centers (MCCs), and automation systems where precise protection is essential. - **Renewable Energy Systems:** Suitable for integration into solar inverters, wind turbine controllers, and battery storage systems, ensuring reliable protection against electrical faults. - **Building Automation:** Used in HVAC systems, lighting controls, and elevator systems to provide localized circuit protection. - **Industrial Automation and Robotics:** Ensures the safety of sensitive electronic components in robotic arms, CNC machines, and automated production lines. **Why Choose WEG for Industrial Circuit Protection?** WEG is a trusted name in electrical solutions, renowned for its innovation, quality, and customer-centric approach. With decades of experience in designing and manufacturing industrial electrical components, WEG’s circuit breakers are trusted by engineers and facility managers worldwide. The UMBW-4B2-1 exemplifies WEG’s dedication to delivering high-performance, reliable, and compliant solutions that meet the evolving needs of modern industries. Whether you’re upgrading existing infrastructure or designing a new system, the UMBW-4B2-1 provides the protection and peace of mind you need to keep your operations running smoothly and safely.
  • Compact design for space-efficient installation in control panels
  • Advanced thermal-magnetic tripping for rapid fault response
  • Durable construction for harsh industrial environments
  • DIN rail compatible for easy mounting and maintenance
  • Compliant with IEC, UL, and CE safety standards

Specifications

Series
UMBW
Package Weight (Imperial)
0.3 LB
One-hole, metric conductor, standard barrel with window lug, 4-6mm wire, M8 stud hole.

LCMA6-8-C

One-hole, metric conductor, standard barrel with window lug, 4-6mm wire, M8 stud hole.
JB5-2 2 POLE JUMPER 5.2MM SPACING

1SNK905302R0000

JB5-2 2 POLE JUMPER 5.2MM SPACING
JB5-5 5 POLE JUMPER 5.2MM SPACING

1SNK905305R0000

JB5-5 5 POLE JUMPER 5.2MM SPACING
Ground Lug

DNGL

Ground Lug
ZCT,LZR-030(V),EMPR,EXP

76512124011

ZCT,LZR-030(V),EMPR,EXP
INTERLOCK UNIT,AR-12M(SEPERATE),GMC(D)-6~16M

83411621001

INTERLOCK UNIT,AR-12M(SEPERATE),GMC(D)-6~16M

Frequently Asked Questions about WEG

What certifications and standards do WEG products comply with?

WEG products meet extensive international standards across multiple critical categories, including safety, electromagnetic compatibility (EMC), functional safety, and regulatory compliance. Key certifications include UL, cUL, CE, TÜV Rheinland, and compliance with international standards such as EN 61800 series, IEC 61508, ISO 13849-1, and directives like Low Voltage (2014/35/EU), EMC (2014/30/EU), and RoHS. Their products are certified for safe operation in various industrial environments, with specific standards covering electrical safety, thermal performance, electromagnetic immunity, and environmental protection.

What is WEG's warranty policy?

WEG offers an 18-month standard warranty for automation products, covering defects in workmanship and materials. The warranty requires proper transportation, handling, storage, and installation within specified environmental conditions. Repairs must be performed by authorized WEG service, and the warranty is limited to the replacement or repair of the product itself, excluding consequential damages. Extended warranty options are available, including purchasing additional coverage at 2.5% of the product's selling price per year, up to 4 additional years.

What industries and applications are WEG products used for?

WEG products are extensively used across multiple industrial sectors, including packaging equipment, material handling, food processing, pumps, medical/lab equipment, door/gate openers, office machinery, and lawn/garden applications. Their versatile DC motors and variable frequency drives (VFDs) are designed for general industrial use, with solutions ranging from off-the-shelf products to custom OEM designs that meet UL/CSA standards for diverse manufacturing and processing environments.

What technical support does WEG offer?

WEG offers comprehensive technical support through multiple channels, including a dedicated Automation Service Department accessible via toll-free phone (1-877-934-3748) and email ([email protected]). They maintain a global network of accredited service centers worldwide, which customers can locate on their website. Additionally, WEG provides warranty support and technical assistance for their industrial automation products, with pre-approval required for warranty repairs.

What are the key features of WEG products?

WEG products feature advanced industrial automation technologies with key characteristics including high performance, flexibility, and connectivity. Their flagship CFW900 Variable Speed Drive demonstrates core product strengths: intelligent thermal management, built-in safety functions, IoT readiness, advanced energy saving capabilities, and comprehensive communication protocols. WEG drives offer robust performance with features like 150% overload capacity, modern graphic HMI, plug-and-play expansion modules, and compatibility across multiple industrial segments including food and beverage, pulp and paper, and manufacturing.

What communication protocols do WEG products support?

WEG products support multiple industrial communication protocols across their product lines, including EtherNet/IP, Modbus-TCP, Modbus-RTU, CANopen, and optional protocols like Profibus-DP and DeviceNet. Specifically, the PLC500 offers 2x Gigabit Ethernet Ports, 1x CAN Port, and 1x RS485 port, enabling seamless integration with major industrial communication networks.

What environmental ratings do WEG products have?

WEG products feature multiple environmental ratings and protection classes. They offer Protection Class 3C2 as a standard coating and Protection Class 3C3 as an optional extra coating, both compliant with IEC 60721-3-3. Environmental specifications include air relative humidity from 5% to 95% non-condensing, altitude ratings up to 1,000m standard (with current derating above that), and Pollution Degree 2 classification with non-conductive pollution requirements.

What accessories are available for WEG products?

WEG offers a comprehensive range of accessories across multiple product lines. For variable frequency drives like the CFW900, accessories include I/O expansion modules, communication modules, encoder modules, temperature transducer modules, relay output modules, and HMI accessories. These accessories expand communication capabilities, input/output functions, and application flexibility. Most accessories are interchangeable between drive frames and can be installed in backplane slots, with communication network accessories limited to one per variable speed drive.

What are the main product lines offered by WEG?

WEG offers a comprehensive range of industrial automation products, including variable frequency drives (CFW series like CFW100, CFW300, CFW500), soft starters (SSW series including SSW05, SSW07, SSW900), and the innovative Motion Fleet Management (MFM) system for predictive maintenance and asset monitoring. Their product lines are designed to support industrial automation needs across various sectors, providing solutions for motor control, fleet management, and operational efficiency.

How are WEG products typically installed?

WEG products are typically installed with careful attention to mounting specifications, protection ratings, and airflow requirements. For variable speed drives like the CFW900, installation methods include surface mounting, flange mounting, and side-by-side configurations with specific clearance guidelines. Installers must follow precise dimensional requirements for each product frame size, ensuring proper ventilation and electrical connections.