WEG UMBW-4B1-25 - MINI CIRCUIT BREAKER UMBW-4B1-25
WEG

UMBW-4B1-25

Alternate Item Number: 14411678

UPC: 7909492466956

Contact for Pricing

Overview

The WEG UMBW-4B1-25 Mini Circuit Breaker stands as a cornerstone of reliable electrical protection for demanding industrial and commercial environments. Engineered by WEG, a globally recognized leader in electrical equipment manufacturing, this compact yet robust circuit breaker is designed to safeguard sensitive electrical circuits from the detrimental effects of overcurrents, including both overloads and short circuits. Its primary function is to interrupt the flow of electricity automatically when fault conditions are detected, thereby preventing damage to equipment, minimizing downtime, and ensuring the safety of personnel. Built to stringent international safety standards, the UMBW-4B1-25 offers exceptional performance and unwavering durability, making it a trusted component in a wide array of applications. Its compact form factor is a significant advantage, facilitating straightforward installation even in space-constrained electrical panels and control cabinets, a common challenge in modern industrial settings. This ease of integration reduces installation time and labor costs, contributing to overall project efficiency. The robust construction of the WEG UMBW-4B1-25 is a testament to WEG's commitment to quality and longevity. Utilizing high-grade materials and precise engineering, this circuit breaker is built to withstand the rigors of industrial operation, ensuring consistent and dependable protection over its operational lifespan. Professionals rely on WEG for its reputation for producing durable and high-performing electrical components, and the UMBW-4B1-25 is no exception. Key applications for the UMBW-4B1-25 include: * Motor protection in manufacturing plants and automation systems. * Protection of lighting circuits in commercial buildings and industrial facilities. * Safeguarding control circuits and auxiliary power supplies. * Integration into power distribution panels and sub-panels. * Use in HVAC systems and other critical infrastructure. When selecting a circuit breaker for industrial applications, factors such as current rating, trip characteristics, breaking capacity, and environmental resistance are paramount. The UMBW-4B1-25, with its reliable tripping mechanism and quality build, addresses these critical selection criteria. Its precise engineering ensures that it will reliably trip at designated current levels, offering a crucial layer of defense against electrical hazards. This proactive protection strategy is essential for maintaining operational continuity and preventing costly repairs or replacements of downstream equipment. The peace of mind that comes with deploying a trusted brand like WEG, coupled with the efficient operational performance delivered by the UMBW-4B1-25, makes it an indispensable choice for electrical system designers and maintenance professionals alike. Its high-quality components and meticulous manufacturing process underscore its role as a dependable solution for safeguarding electrical integrity.
  • Reliable overcurrent protection against overloads and short circuits
  • Compact design for easy installation in tight spaces
  • Robust construction ensures long-term durability and performance
  • Engineered to meet stringent industrial safety standards
  • Ideal for protecting motors, control circuits, and lighting

Specifications

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.