WEG UMBW-1B3-50 - MINI CIRCUIT BREAKER UMBW-1B3-50
WEG

UMBW-1B3-50

Alternate Item Number: 14353475

UPC: 7909492435501

Contact for Pricing

Overview

The **WEG UMBW-1B3-50 Mini Circuit Breaker** is a high-performance, compact solution engineered for reliable electrical protection in industrial, commercial, and infrastructure applications. Designed by WEG, a globally trusted manufacturer of industrial electrical components, this circuit breaker delivers precision protection against overloads, short circuits, and other electrical faults while ensuring system safety and operational continuity. Its rugged construction and space-saving form factor make it an ideal choice for installations where space is constrained but performance cannot be compromised. **Key Features and Technical Excellence** The UMBW-1B3-50 is part of WEG’s comprehensive line of circuit protection devices, renowned for their durability and adherence to international safety standards. The breaker features a **modular design**, allowing for seamless integration into control panels, distribution boards, and machinery enclosures. Its **robust housing** resists environmental factors such as dust, moisture, and mechanical stress, making it suitable for harsh industrial environments including manufacturing plants, data centers, and renewable energy installations. **Applications Across Diverse Industries** This mini circuit breaker is widely used in applications where reliable circuit protection is critical. In **industrial machinery**, it safeguards motors, drives, and automation systems from electrical faults that could lead to costly downtime. For **HVAC systems**, it ensures stable operation of compressors, fans, and control circuits, preventing damage from transient surges or overloads. In **commercial buildings**, the UMBW-1B3-50 protects lighting circuits, power distribution panels, and sensitive electronic equipment, enhancing operational reliability and reducing maintenance costs. **Why Choose WEG for Circuit Protection?** WEG is a leader in industrial electrical solutions, with decades of expertise in developing components that meet the rigorous demands of modern electrical systems. The UMBW-1B3-50 reflects this commitment through its **high interrupting rating**, **fast response time**, and **compliance with IEC and UL standards**, ensuring compatibility with global electrical codes. Professionals in electrical engineering, maintenance, and system design trust WEG for products that combine innovation, safety, and longevity. **Installation and Maintenance Considerations** Installing the UMBW-1B3-50 is straightforward due to its **snap-on mounting** and **clear terminal markings**, which simplify wiring and reduce installation time. It is designed for **DIN rail mounting**, a standard in industrial control panels, allowing for quick replacement or expansion of protection zones. Regular maintenance is minimal—simply inspect for signs of wear, ensure proper torque on connections, and verify operation during scheduled system checks. WEG provides comprehensive documentation and support to assist engineers and technicians in optimal deployment. **Industry Trust and Long-Term Value** By choosing the WEG UMBW-1B3-50, businesses invest in a product that delivers **consistent performance**, **reduced risk of electrical failures**, and **extended equipment lifespan**. Its compact size does not compromise on functionality, making it a versatile solution for both new installations and retrofit projects. Whether protecting a single critical circuit or integrating into a large-scale distribution system, this mini circuit breaker stands as a reliable guardian of electrical safety and system integrity.
  • Compact design for space-constrained installations
  • Rugged construction for harsh industrial environments
  • High interrupting rating and fast fault response
  • DIN rail mounting for easy integration
  • Compliant with IEC and UL safety standards

Specifications

Series
UMBW
Package Weight (Imperial)
1 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.