WEG UMBW-1D1-1 - MINI CIRCUIT BREAKER UMBW-1D1-1
WEG

UMBW-1D1-1

Alternate Item Number: 14360375

UPC: 7909492436157

Contact for Pricing

Overview

The WEG UMBW-1D1-1 Mini Circuit Breaker (MCB) is a high-performance protective device engineered to safeguard industrial electrical circuits from overcurrent conditions, including overloads and short circuits. Designed for compact installations while delivering robust protection, this miniature circuit breaker combines advanced thermal and magnetic trip mechanisms to ensure rapid response to fault conditions. The UMBW-1D1-1 is part of WEG’s trusted line of industrial protection equipment, a manufacturer renowned for reliability and innovation in electrical solutions across global markets. Miniature circuit breakers like the UMBW-1D1-1 are essential components in modern electrical distribution systems, offering precise protection for branch circuits in motor control centers, distribution panels, and control cabinets. Unlike fuses, MCBs provide resettable protection, eliminating the need for replacement after a fault event and reducing downtime in critical operations. The thermal trip element responds to sustained overloads by heating and tripping the breaker, while the magnetic element reacts instantly to short-circuit conditions, ensuring comprehensive defense against electrical hazards. This WEG circuit breaker is ideal for applications requiring compact yet high-performance protection in industrial environments such as manufacturing plants, processing facilities, and infrastructure projects. It is commonly deployed in motor circuits, lighting systems, and auxiliary power distribution where reliable overcurrent protection is non-negotiable. The UMBW-1D1-1 supports DIN rail mounting, a standard in industrial installations, enabling quick and secure integration into existing panels or new system designs. Professionals choose WEG for its engineering excellence and global support network. With decades of experience in industrial automation and power systems, WEG delivers products that meet stringent international standards, including IEC 60898 and UL 1077, ensuring compatibility and safety in diverse applications. The UMBW-1D1-1 is manufactured under WEG’s quality management systems, reflecting the company’s commitment to durability and performance in harsh operating conditions. Installation is straightforward with clear terminal markings and standardized dimensions, reducing commissioning time and minimizing human error. Maintenance is minimal due to the breaker’s sealed design and robust construction. For engineers and technicians seeking a dependable MCB that balances compact form with high interrupting capacity, the WEG UMBW-1D1-1 represents a smart investment in system reliability and operational safety. Whether protecting sensitive control circuits or high-power distribution lines, the UMBW-1D1-1 delivers consistent performance, backed by WEG’s reputation for innovation and customer support. Trusted by industries worldwide, this mini circuit breaker is more than a protective device—it’s a cornerstone of modern electrical safety and efficiency.
  • Dual trip mechanism (thermal + magnetic) for overload and short-circuit protection
  • Compact DIN rail mounting for space-efficient industrial installations
  • Resettable operation eliminates downtime and replacement costs
  • Compliant with IEC 60898 and UL 1077 safety standards
  • Backed by WEG’s global engineering expertise and customer support

Specifications

Mounting Type
DIN Rail
Series
UMBW
Package Weight (Imperial)
0.3 LB
Ground Lug

DNGL

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

83411621001

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

76512124011

ZCT,LZR-030(V),EMPR,EXP
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
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.

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.