WEG UMBW-1D2-20 - MINI CIRCUIT BREAKER UMBW-1D2-20
WEG

UMBW-1D2-20

Alternate Item Number: 14361098

UPC: 7909492436621

Contact for Pricing

Overview

The WEG UMBW-1D2-20 Mini Circuit Breaker is a high-performance, compact protection device engineered for industrial and commercial electrical systems. Part of WEG’s renowned UMBW Series, this 20A circuit breaker delivers reliable overcurrent protection for branch circuits, ensuring operational safety and equipment longevity. Designed to meet rigorous industrial standards, the UMBW-1D2-20 combines thermal and magnetic trip mechanisms to safeguard against overloads and short-circuit conditions, preventing costly downtime and potential hazards like electrical fires. WEG, a global leader in electrical engineering and automation solutions, has designed the UMBW Series to address the demanding requirements of modern power distribution systems. The UMBW-1D2-20 is ideal for protecting sensitive equipment in motor circuits, distribution panels, control systems, and industrial machinery. Its miniature form factor allows for space-efficient installation in crowded control panels, switchgear, and electrical enclosures without compromising performance. Key applications include: - **Motor protection**: Safeguarding industrial motors from overloads and phase faults. - **Distribution panels**: Managing branch circuit protection in commercial buildings and factories. - **Control systems**: Providing reliable isolation for automation and instrumentation circuits. - **Renewable energy systems**: Protecting inverters and power distribution in solar/wind installations. - **HVAC systems**: Ensuring safe operation of heating, ventilation, and air conditioning equipment. The UMBW-1D2-20’s thermal-magnetic trip unit ensures rapid response to fault conditions, with precise tripping characteristics for both overload and short-circuit scenarios. This dual-mechanism design enhances system reliability by disconnecting power before damage occurs. Installation is straightforward, with DIN rail compatibility for quick mounting in standard enclosures. The breaker’s robust construction and corrosion-resistant materials ensure durability in harsh industrial environments, including dusty, humid, or high-temperature settings. Professionals choose WEG for its legacy of innovation, quality, and compliance with international standards such as IEC, UL, and CSA. The UMBW Series reflects WEG’s commitment to delivering high-efficiency, low-maintenance solutions that reduce total cost of ownership. Whether for retrofitting existing systems or designing new installations, the UMBW-1D2-20 provides a trusted, cost-effective solution for critical protection needs. Pair it with WEG contactors, relays, or motor starters for a fully integrated protection and control system. Backed by WEG’s global service network and technical support, the UMBW-1D2-20 ensures peace of mind for engineers, electricians, and facility managers. Its compact footprint, high interrupting rating, and compliance with industry regulations make it a preferred choice for professionals prioritizing safety, performance, and reliability in electrical protection.
  • 20A rated current for branch circuit protection
  • Thermal-magnetic trip mechanism for overload and short-circuit protection
  • Compact design for space-efficient DIN rail mounting
  • Compliant with IEC, UL, and CSA standards
  • Ideal for motor circuits, distribution panels, and industrial automation

Specifications

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