WEG UMBW-4B3-5 - MINI CIRCUIT BREAKER UMBW-4B3-5
WEG

UMBW-4B3-5

Alternate Item Number: 14361489

UPC: 7909492437260

Contact for Pricing

Overview

Ensure the safety and reliability of your electrical systems with the WEG UMBW-4B3-5 Mini Circuit Breaker. Engineered by WEG, a globally recognized leader in electrical equipment manufacturing, this compact yet robust circuit breaker is designed to provide essential overcurrent protection for a wide range of industrial and commercial applications. The UMBW-4B3-5 is a critical component for safeguarding machinery, control panels, and electrical distribution systems from the damaging effects of overloads and short circuits, thereby preventing equipment failure and potential hazards. Part of WEG's esteemed UMBW series, this mini circuit breaker exemplifies the brand's commitment to quality, performance, and safety. Its primary function is to automatically interrupt the flow of electricity when an abnormal current condition is detected, acting as a crucial safeguard against fire and equipment damage. This rapid response capability is vital in fast-paced industrial environments where downtime can be exceptionally costly. The UMBW-4B3-5 is built to withstand the demanding conditions often found in manufacturing plants, processing facilities, and heavy-duty commercial settings, offering dependable protection day in and day out. The compact design of the WEG UMBW-4B3-5 makes it an ideal solution for applications where space is at a premium. It can be seamlessly integrated into existing electrical panels and control cabinets without requiring significant modifications. Despite its small footprint, this circuit breaker does not compromise on durability or performance. Its construction utilizes high-quality materials, ensuring longevity and consistent operation even under continuous stress. Professionals rely on WEG products for their robust engineering and adherence to stringent international safety standards, providing users with the confidence that their electrical infrastructure is well-protected. Key benefits and features of the WEG UMBW-4B3-5 Mini Circuit Breaker include: * **Reliable Overcurrent Protection:** Effectively interrupts circuits during overloads and short circuits, preventing damage to connected equipment and wiring. * **Compact and Space-Saving Design:** Ideal for installation in confined electrical enclosures and control panels. * **Durable Construction:** Built with high-quality materials for long-term performance and resilience in industrial environments. * **Enhanced Safety:** Engineered to meet rigorous safety standards, ensuring peace of mind for critical electrical systems. * **WEG Quality Assurance:** Manufactured by a trusted global leader known for innovation and reliability in electrical solutions. This circuit breaker is suitable for a multitude of applications, including motor protection, lighting circuits, power distribution in control panels, and general electrical protection in various industrial sectors such as automotive manufacturing, food and beverage processing, water treatment, and building automation. When selecting a circuit breaker, factors such as current rating, trip characteristics, and environmental conditions are paramount. The WEG UMBW-4B3-5 offers a dependable option that meets the essential requirements for many standard industrial protection needs. Trust WEG for your critical electrical protection requirements.
  • WEG UMBW-4B3-5 Mini Circuit Breaker for robust electrical protection.
  • Designed for industrial and commercial applications, ensuring system safety.
  • Interrupts electrical currents during overloads and short circuits.
  • Compact design ideal for space-constrained electrical panels.
  • Durable construction for long-term reliability and performance.

Specifications

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.