WEG UMBW-BAC - AUXILIARY/ALARM CONTACT UMBW-BAC
WEG

UMBW-BAC

Alternate Item Number: 14429836

UPC: 7909492475408

Contact for Pricing

Overview

The WEG UMBW-BAC is a Bell Alarm auxiliary contact designed for WEG UMBW-1 and UMBW-4 miniature circuit breakers. This module provides essential visual and audible alarm indication when a compatible breaker trips due to short circuit, overload, or undervoltage conditions. The contacts reset only after the breaker is manually reset. It mounts on the left side of the breaker with a 9mm footprint. The UMBW-BAC supports a wide operating voltage range, including 12-240V AC, 277V AC, 12-24V DC, 48V DC, and 110-220V DC. It features 1 normally open (NO) and 1 normally closed (NC) contact set, rated for 6A (3A at 277V AC). With a mechanical endurance of 10,000 operations, this contact is suitable for applications requiring remote alarm monitoring in distribution panels and industrial control systems. SKU: UMBW-BAC. Manufacturer: WEG.
  • Provides visual and alarm indication for breaker trip events (short circuit, overload, undervoltage).
  • Compatible with WEG UMBW-1 and UMBW-4 miniature circuit breakers.
  • 1NO/1NC contact configuration with ratings up to 6A (3A at 277V AC).
  • Wide operating voltage range: 12-240V AC, 277V AC, 12-24V DC, 48V DC, 110-220V DC.
  • Compact 9mm footprint, mounts on the left side of compatible breakers.

Specifications

Current Rating
6A (3A at 277V AC)
Ip Rating
IP66/IP67
Ip Rating
IEC/UL
Mounting Type
Direct Mount
Mounting Type
Modular/Direct Mount
Mounting Type
Left side of compatible breakers
Poles
1NO/1NC
Series
UMBW
Size
9mm footprint
Voltage Rating
12-240V AC, 277V AC, 12-24V DC, 48V DC, 110-220V DC
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

What circuit breakers is this compatible with?

The UMBW-BAC is designed for WEG UMBW-1 and UMBW-4 miniature circuit breakers.

What is the contact rating of the UMBW-BAC?

The UMBW-BAC features 1NO/1NC contacts rated at 6A (3A at 277V AC).

How many mechanical operations can the UMBW-BAC withstand?

The UMBW-BAC can withstand 10,000 mechanical operations.

What voltages does the UMBW-BAC support?

The UMBW-BAC supports 12-240V AC, 277V AC, 12-24V DC, 48V DC, and 110-220V DC.

Where does the UMBW-BAC mount on the circuit breaker?

The UMBW-BAC mounts on the left side of compatible breakers with a 9mm footprint.

What is the purpose of the UMBW-BAC?

The UMBW-BAC provides remote status indication (ON/OFF) and alarm signaling when the breaker trips.

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.