WEG UMBW-1D2-8 - MINI CIRCUIT BREAKER UMBW-1D2-8
WEG

UMBW-1D2-8

Alternate Item Number: 14361184

UPC: 7909492436782

Contact for Pricing

Overview

The **WEG UMBW-1D2-8 Mini Circuit Breaker** is a compact, high-performance electrical protection device engineered to safeguard industrial power systems against overcurrent and short-circuit conditions. Designed for branch circuit protection, this miniature circuit breaker (MCB) combines advanced thermal and magnetic trip mechanisms to deliver precise, responsive fault detection. Whether installed in motor circuits, distribution panels, or industrial control systems, the UMBW-1D2-8 ensures uninterrupted safety by automatically disconnecting power during fault events, preventing equipment damage, electrical fires, and costly downtime. **Key Features and Technical Advantages** The UMBW-1D2-8 is part of WEG’s trusted line of industrial circuit protection solutions, renowned for durability and compliance with international safety standards. Its miniature form factor allows for seamless integration into tight panel spaces while maintaining robust performance. The dual trip mechanism—thermal for overload protection and magnetic for instantaneous short-circuit response—ensures rapid intervention without nuisance tripping, optimizing both safety and operational efficiency. **Industry Applications and Use Cases** This mini circuit breaker is ideal for a wide range of industrial environments, including: - **Motor control centers (MCCs)** – Protecting motors from overloads and phase imbalances. - **Distribution panels** – Safeguarding branch circuits in manufacturing plants, warehouses, and commercial facilities. - **Control panels** – Ensuring reliable protection for automation and instrumentation systems. - **Renewable energy systems** – Providing fault protection in solar and wind power installations. - **HVAC systems** – Shielding compressors, fans, and pumps from electrical faults. **Why Choose WEG for Circuit Protection?** WEG is a global leader in industrial electrical solutions, with decades of expertise in designing products that meet the rigorous demands of modern power systems. The UMBW-1D2-8 reflects the company’s commitment to innovation, reliability, and compliance with standards such as IEC 60898 and UL 1077. Professionals in electrical engineering, maintenance, and facility management trust WEG for products that combine cutting-edge technology with field-proven durability. **Installation and Maintenance Considerations** The UMBW-1D2-8 is designed for easy installation in standard DIN rail systems, making it a versatile choice for retrofits and new constructions alike. Its modular design allows for quick replacement and maintenance, reducing downtime in critical operations. WEG provides comprehensive technical documentation, including wiring diagrams and trip curves, to support engineers in selecting the optimal settings for their specific applications. Regular inspection and adherence to manufacturer guidelines ensure long-term reliability and performance. **Safety and Compliance** Safety is paramount in industrial electrical systems, and the UMBW-1D2-8 is engineered to exceed industry safety requirements. Its compact design does not compromise on protection—each unit undergoes rigorous testing to ensure consistent operation under extreme conditions. By integrating this mini circuit breaker into your power distribution system, you mitigate risks associated with electrical faults while maintaining compliance with local and international electrical codes. **Conclusion** For industrial professionals seeking a reliable, high-quality mini circuit breaker, the **WEG UMBW-1D2-8** delivers unmatched protection, durability, and ease of use. Whether protecting sensitive equipment or entire distribution networks, this MCB stands as a testament to WEG’s leadership in electrical safety solutions. Invest in the UMBW-1D2-8 to enhance the reliability and safety of your electrical infrastructure today.
  • Dual thermal and magnetic trip mechanisms for overload and short-circuit protection
  • Compact design for DIN rail mounting in tight panel spaces
  • Compliant with IEC 60898 and UL 1077 safety standards
  • Ideal for motor circuits, distribution panels, and industrial control systems
  • Easy installation and maintenance with WEG’s trusted engineering

Specifications

Connection Type
DIN Rail
Current Rating
8 A
Mounting Type
DIN Rail
Poles
1P
Series
UMBW
Package Weight (Imperial)
0.7 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.