WEG UMBW-1D3-4 - MINI CIRCUIT BREAKER UMBW-1D3-4
WEG

UMBW-1D3-4

Alternate Item Number: 14361378

UPC: 7909492437000

Contact for Pricing

Overview

The WEG UMBW-1D3-4 Miniature Circuit Breaker (MCB) is a critical component for ensuring the safety and reliability of electrical systems in demanding industrial environments. Designed by WEG, a globally recognized leader in electrical equipment manufacturing, this MCB provides robust overcurrent protection, safeguarding valuable machinery and personnel from the damaging effects of electrical faults. At its core, the UMBW-1D3-4 functions by automatically interrupting the flow of electricity when it detects conditions that exceed safe operating limits. This is achieved through a combination of thermal and magnetic trip mechanisms. The thermal element responds to sustained overloads, which occur when a circuit draws more current than it is designed for over an extended period. This gradual increase in current generates heat, and the thermal mechanism trips the breaker to prevent overheating and potential fires. The magnetic element, on the other hand, is designed to react instantaneously to sudden, high-magnitude surges of current, such as those experienced during a short circuit. This rapid response is crucial for preventing catastrophic damage to equipment and mitigating the risk of electrical arcs. Miniature circuit breakers like the UMBW-1D3-4 are indispensable in a wide array of industrial applications. They are commonly found protecting branch circuits within motor control centers, safeguarding individual motors from overload and short-circuit conditions. Their compact design makes them ideal for installation in space-constrained distribution panels, control cabinets, and power distribution units. Industries that rely heavily on the dependable protection offered by WEG MCBs include manufacturing, processing plants, automation systems, and any facility where continuous and safe operation of electrical equipment is paramount. Selecting the correct circuit breaker involves careful consideration of the circuit's rated current, voltage, and the specific protection requirements. The UMBW-1D3-4, with its inherent design for industrial use, offers a reliable solution for many standard industrial power distribution needs. WEG's reputation for producing high-quality, durable electrical components instills confidence in the performance and longevity of their circuit breakers. Investing in a WEG UMBW-1D3-4 means investing in peace of mind, knowing that your electrical infrastructure is protected by a trusted and effective safety device. Key benefits of the WEG UMBW-1D3-4 Miniature Circuit Breaker include: * **Reliable Overcurrent Protection:** Effectively guards against both overload and short-circuit faults. * **Enhanced Safety:** Prevents equipment damage, reduces the risk of electrical fires, and protects personnel. * **Compact Design:** Facilitates easy integration into existing or new electrical panels and control systems. * **Durable Construction:** Built to withstand the rigors of industrial environments. * **Trusted Manufacturer:** From WEG, a global leader in electrical solutions. This circuit breaker is an essential safety device for motor circuits, distribution panels, and various industrial power systems, ensuring operational continuity and protecting critical assets.
  • WEG UMBW-1D3-4 Miniature Circuit Breaker for industrial applications.
  • Provides essential overcurrent protection against overload and short circuits.
  • Features combined thermal and magnetic trip mechanisms for comprehensive safety.
  • Compact design suitable for distribution panels, motor control centers, and control cabinets.
  • Ensures reliable electrical protection for machinery, equipment, and personnel.

Specifications

Current Rating
4 A
Mounting Type
DIN Rail
Series
UMBW
Package Weight (Imperial)
1 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.