WEG UMBW-4D1-3 - MINI CIRCUIT BREAKER UMBW-4D1-3
WEG

UMBW-4D1-3

Alternate Item Number: 14362951

UPC: 7909492437987

Contact for Pricing

Overview

The WEG UMBW-4D1-3 Miniature Circuit Breaker (MCB) is engineered to provide robust and reliable overcurrent protection for a wide array of industrial electrical circuits and critical equipment. As a vital safety component, this MCB is designed to automatically disconnect power when fault conditions such as overloads or short circuits are detected, thereby preventing potential damage to machinery, reducing the risk of electrical fires, and ensuring the safety of personnel. This particular model, the UMBW-4D1-3 from WEG, exemplifies the compact yet powerful protection that miniature circuit breakers offer. MCBs are indispensable in modern electrical installations, particularly for branch circuit protection within distribution panels, motor control centers, and various industrial power systems. The integration of both thermal and magnetic trip mechanisms within a single unit provides comprehensive defense against the two primary forms of electrical faults. The thermal element responds to sustained overcurrents, typically caused by gradual overloads, while the magnetic element reacts instantaneously to high-magnitude short-circuit currents, offering rapid disconnection and minimizing damage. WEG is a globally recognized leader in the manufacturing of electrical equipment, renowned for its commitment to quality, innovation, and performance. Their circuit breakers, including the UMBW-4D1-3, are built to stringent industry standards, ensuring dependable operation even in demanding industrial environments. Professionals rely on WEG products for their durability, consistent performance, and adherence to safety regulations. The UMBW-4D1-3 is an excellent choice for applications requiring precise and efficient circuit protection, contributing to the overall reliability and safety of industrial operations. Key applications for the WEG UMBW-4D1-3 include: * Protection of motor circuits in manufacturing plants and processing facilities. * Safeguarding power distribution panels in commercial and industrial buildings. * Ensuring the integrity of control circuits and auxiliary power supplies. * Providing essential safety for lighting circuits and HVAC systems. * Integration into custom-built control panels and machinery. When selecting a circuit breaker, factors such as current rating, trip curve characteristics, breaking capacity, and environmental conditions are paramount. The UMBW-4D1-3 is designed to meet the rigorous demands of industrial settings, offering peace of mind through its reliable fault interruption capabilities. Its compact design facilitates easy installation and space-saving within electrical enclosures, a critical consideration in many industrial panel builds. Investing in high-quality circuit protection like the WEG UMBW-4D1-3 is a fundamental step in maintaining operational continuity and safeguarding valuable assets.
  • WEG UMBW-4D1-3 Miniature Circuit Breaker (MCB)
  • Provides essential overcurrent and short-circuit protection
  • Combines thermal and magnetic trip mechanisms for comprehensive safety
  • Ideal for motor circuits, distribution panels, and industrial power systems
  • Compact design for easy installation and space efficiency

Specifications

Poles
4P
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.