WEG MSW 125 B-3 - ROTARY DISCONNECTOR MSW 125 B3
WEG

MSW 125 B-3

Alternate Item Number: 11898939

UPC: 7909018116075

Contact for Pricing

Overview

The WEG MSW 125 B-3 Rotary Disconnector (SKU: MSW 125 B-3) is a 125A, 3-pole disconnect switch designed for industrial electrical isolation. Rated IP20 for touch-safe operation, it supports both base and door mounting configurations, enabling flexible panel integration. Compliance with IEC 60947-3 and UL508 ensures adherence to global safety standards for motor disconnects and power distribution applications. The disconnector features a visible break mechanism for clear circuit status indication, critical for lockout/tagout (LOTO) procedures. With a 300mm shaft option (WEG MSW H 160-B-B), it accommodates varied panel layouts. Contact configurations include 1NC (normally closed) and 1NO (normally open) variants, as listed in WEG’s MSW series catalog. Ideal for motor control circuits, power distribution panels, and equipment isolation in industrial environments where reliable, code-compliant disconnection is required.
  • 125A, 3-pole rotary disconnector for industrial electrical isolation
  • IP20 touch-safe rating for personnel protection
  • Base and door mounting options for flexible panel integration
  • Compliant with IEC 60947-3 and UL508 standards
  • Visible break mechanism for clear circuit status indication

Specifications

Current Rating
125 A
IP Rating
IP20
Mounting Type
Base and door mounting
Series
MSW
Package Weight (Imperial)
0.9 LB
ROTARY DISCONNECTOR MSW 100 P3

MSW 100 P-3

ROTARY DISCONNECTOR MSW 100 P3
DSN150 PHASE ROTATION METER POLY BLUE | Size 5 3P+N+G | 150A 120/208 VAC 60 Hz

63-91167-MTR

DSN150 PHASE ROTATION METER POLY BLUE | Size 5 3P+N+G | 150A 120/208 VAC 60 Hz
SBC 15 INTERMED. STUD BARS 40

50201040

SBC 15 INTERMED. STUD BARS 40

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.