WEG UMBW-1D3-30 - MINI CIRCUIT BREAKER UMBW-1D3-30
WEG

UMBW-1D3-30

Alternate Item Number: 14361313

UPC: 7909492436980

Contact for Pricing

Overview

The **WEG UMBW-1D3-30 Mini Circuit Breaker** is a high-performance miniature circuit breaker (MCB) designed to provide reliable overcurrent protection for a wide range of electrical circuits and equipment. Engineered by **WEG**, a globally recognized leader in industrial electrical solutions, this 30-ampere (30A) circuit breaker is part of the UMBW Series, known for its compact design, robust construction, and advanced protection mechanisms. Whether used in motor circuits, distribution panels, or industrial power systems, the UMBW-1D3-30 ensures safety, reliability, and compliance with international electrical standards. **Key Features and Benefits** The WEG UMBW-1D3-30 Mini Circuit Breaker integrates both **thermal and magnetic trip mechanisms**, providing dual-layer protection against overloads and short circuits. The thermal trip element responds to sustained overcurrent conditions, gradually heating and tripping to prevent damage to conductors and connected equipment. Meanwhile, the magnetic trip element reacts instantaneously to high fault currents, such as those caused by short circuits, ensuring rapid disconnection to minimize risk of fire or equipment failure. This combination of protection methods makes the UMBW-1D3-30 an ideal choice for protecting sensitive and high-value industrial assets. Designed for **compact installation**, the UMBW-1D3-30 is ideal for space-constrained environments such as control panels, motor control centers (MCCs), and distribution boards. Its modular DIN-rail mounting system allows for quick and secure installation, reducing downtime during maintenance or upgrades. The breaker is rated for **30A continuous current**, making it suitable for protecting branch circuits that supply motors, lighting systems, HVAC units, and other critical loads in commercial and industrial facilities. **Typical Applications and Industries** The versatility of the WEG UMBW-1D3-30 makes it a preferred choice across multiple industries. In **manufacturing plants**, it protects motor circuits in conveyor systems, CNC machines, and pumps. In **commercial buildings**, it safeguards lighting circuits, air conditioning units, and power distribution panels. The construction industry relies on MCBs like the UMBW-1D3-30 to ensure safe electrical installations in residential, commercial, and infrastructure projects. Additionally, the breaker is widely used in **renewable energy systems**, such as solar and wind power installations, where reliable overcurrent protection is essential for inverter and battery circuit safety. **Why Choose WEG UMBW Series?** WEG is a trusted name in industrial automation and electrical engineering, with decades of experience delivering high-quality protection devices. The UMBW Series reflects the company’s commitment to innovation, durability, and compliance with international standards such as IEC 60898 and UL 1077. Professionals in the electrical industry choose WEG circuit breakers for their consistent performance, long service life, and compatibility with a wide range of electrical systems. The UMBW-1D3-30, in particular, is engineered to meet the demands of modern industrial environments, where reliability and safety cannot be compromised. **Installation and Maintenance Considerations** Installing the WEG UMBW-1D3-30 is straightforward thanks to its DIN-rail compatibility and clear labeling. It is designed to be mounted in standard electrical enclosures, ensuring seamless integration with existing systems. Regular maintenance involves visual inspection for signs of wear, testing the trip mechanism, and ensuring proper torque on connections. WEG provides comprehensive technical documentation and support, including wiring diagrams and application guides, to assist engineers and technicians in proper installation and operation. **Conclusion** For engineers, electricians, and facility managers seeking a dependable, high-quality miniature circuit breaker, the **WEG UMBW-1D3-30** offers unmatched protection, durability, and ease of use. Its combination of thermal and magnetic tripping, compact design, and industry-leading reliability makes it an essential component in any electrical protection strategy. Trusted by professionals worldwide, WEG continues to set the standard for safety and performance in circuit protection technology.
  • 30A rated miniature circuit breaker (MCB)
  • Dual thermal and magnetic trip mechanisms for overload and short-circuit protection
  • Compact DIN-rail mount design for space-efficient installations
  • Compliant with IEC 60898 and UL 1077 standards
  • Ideal for motor circuits, distribution panels, and industrial power systems

Specifications

Current Rating
30 A
Poles
1P
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.