WEG UMBW-4D2-35 - MINI CIRCUIT BREAKER UMBW-4D2-35
WEG

UMBW-4D2-35

Alternate Item Number: 14363199

UPC: 7909492438113

Contact for Pricing

Overview

The WEG UMBW-4D2-35 is a high-performance 4-pole miniature circuit breaker (MCB) engineered for robust electrical protection in demanding industrial environments. Designed by WEG, a globally recognized leader in electrical equipment manufacturing, this UMBW series breaker offers exceptional reliability and safety for a wide range of applications. With a substantial current rating of 35 Amperes, the UMBW-4D2-35 is ideally suited for safeguarding critical circuits and equipment from damaging overcurrent conditions. Miniature circuit breakers, like the WEG UMBW-4D2-35, are fundamental safety devices in modern electrical systems. They integrate both thermal and magnetic trip mechanisms to provide comprehensive protection. The thermal element responds to sustained overloads, gradually tripping the breaker to prevent overheating and potential fires. Conversely, the magnetic element reacts instantaneously to severe short-circuit faults, rapidly interrupting the power flow to avert catastrophic damage to connected machinery and wiring. This dual-action protection is essential for maintaining operational continuity and ensuring personnel safety. Applications for the WEG UMBW-4D2-35 are extensive across various industrial sectors. It is a crucial component in: * Motor control circuits, protecting electric motors from damage due to overloads or phase imbalances. * Distribution panels and sub-panels, providing branch circuit protection for lighting, HVAC systems, and other essential loads. * Industrial machinery and automation systems, safeguarding sensitive electronic components and power supplies. * Power generation and transmission infrastructure, offering reliable circuit interruption. * Manufacturing facilities, processing plants, and heavy industry where consistent and safe power delivery is paramount. Choosing the correct circuit breaker is vital for system integrity. The 4-pole configuration of the UMBW-4D2-35 ensures complete isolation of all three phases plus the neutral conductor, which is often a requirement for specific industrial applications, particularly those involving three-phase motors or systems with neutral grounding. This comprehensive disconnection capability enhances safety during maintenance and fault conditions. WEG's commitment to quality manufacturing ensures that each UMBW-4D2-35 breaker meets stringent international standards, providing peace of mind for engineers and facility managers. The compact design of this miniature circuit breaker allows for efficient use of space within electrical enclosures and panels, facilitating streamlined installation and maintenance. Trust WEG for dependable overcurrent protection solutions that safeguard your valuable assets and ensure operational efficiency.
  • WEG UMBW Series 4-Pole Miniature Circuit Breaker
  • 35 Ampere Current Rating for robust protection
  • Integrated thermal and magnetic trip mechanisms
  • Essential for motor circuits, distribution panels, and industrial machinery
  • Ensures reliable overcurrent and short-circuit protection

Specifications

Current Rating
35 A
Poles
4P
Series
UMBW
Package Weight (Imperial)
0.7 LB
Ground Lug

DNGL

Ground Lug
INTERLOCK UNIT,AR-12M(SEPERATE),GMC(D)-6~16M

83411621001

INTERLOCK UNIT,AR-12M(SEPERATE),GMC(D)-6~16M
ZCT,LZR-030(V),EMPR,EXP

76512124011

ZCT,LZR-030(V),EMPR,EXP
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
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.

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.