ABB - Installation Products MD550 - T&B Method Traction Motor Disconnect Lug for Diesel-Electric Locomotives, Cable Size 550/24, Bolt Hole 5/16 Inch on 7/8 Inch Centers, Die Code 76
ABB - Installation Products

MD550

UPC: 786210864402

Documents & Media
Installation InstructionsManufacturer Product Website

Contact for Pricing

Minimum Qty: 10

Multiplier: 10

*Contact for lower quantities*

Overview

The ABB - Installation Products MD550 T&B Method Traction Motor Disconnect Lug (SKU: MD550) is a critical component for diesel-electric locomotive traction motor applications. Engineered for robust electrical connections, this lug ensures reliable power transfer under demanding railway conditions. It is designed to accommodate a cable size of 550/24 and features a 5/16 inch bolt hole spaced on 7/8 inch centers for secure mounting. The specified Die Code 76 ensures compatibility with established industrial crimping standards, guaranteeing a consistent and high-quality connection. Key specifications include: * **Cable Size:** 550/24 * **Bolt Hole:** 5/16 Inch * **Bolt Hole Centers:** 7/8 Inch * **Die Code:** 76 * **Material:** Copper wire only * **Temperature Rating:** 75°C * **Terminal Torque:** M1018159 (75°C) This disconnect lug is specifically designed for heavy-duty railway operations, providing a secure point for disconnecting traction motors during maintenance or troubleshooting. Its construction prioritizes electrical conductivity and mechanical integrity, essential for the continuous operation of locomotives. Trust ABB - Installation Products for durable and dependable electrical solutions that meet the stringent requirements of the railway industry. The MD550 is built to withstand the operational stresses inherent in locomotive service, ensuring long-term performance and safety.
  • Designed for diesel-electric locomotive traction motor applications
  • Accommodates cable size 550/24
  • Features 5/16 inch bolt hole on 7/8 inch centers for secure mounting
  • Utilizes Die Code 76 for reliable crimping
  • Constructed for copper wire only with a 75°C temperature rating

Specifications

Finish
Tin Plated
Material
Copper
Material
Copper, Tin Plated
Mounting Type
Mounting on 7/8 Inch Centers
Series
T&B Method Traction Motor Disconnect Lug
Size
Cable Size 550/24, Bolt Hole 5/16 Inch on 7/8 Inch Centers
Type
Motor Disconnect Lug
Voltage Rating
600 V
Package Dimensions (L x W x H)
0.01 IN x 0.01 IN x 0.01 IN
Package Dimensions (L x W x H)
0.0254 cm x 0.0254 cm x 0.0254 cm
Package Weight (Imperial)
0.001 L
Package Weight (Metric)
0.001 kg
T&B Method Traction Motor Disconnect Lug for Diesel-Electric Locomotives, Cable Size 325/24, Bolt Hole 5/16 Inch on 7/8 Inch Centers, Die Code 60

MD325

T&B Method Traction Motor Disconnect Lug for Diesel-Electric Locomotives, Cable Size 325/24, Bolt Hole 5/16 Inch on 7/8 Inch Centers, Die Code 60
Non-Insulated Male Tab Grip, Length .87 Inches, Tab Size .250x.032, Wire Range #22-#18 AWG, Copper, Tin Plated

A18-250T

Non-Insulated Male Tab Grip, Length .87 Inches, Tab Size .250x.032, Wire Range #22-#18 AWG, Copper, Tin Plated
T&B Method Traction Motor Disconnect Lug for Diesel-Electric Locomotives, Cable Size 1325/24, Bolt Hole 3/8 Inch on 1 Inch Centers, Die Code 107

MD1325

T&B Method Traction Motor Disconnect Lug for Diesel-Electric Locomotives, Cable Size 1325/24, Bolt Hole 3/8 Inch on 1 Inch Centers, Die Code 107
KUBE Male (Two Load) Copper Motor Pigtail Disconnect, Wire Size 1 AWG, Body Size 2, Die Color Green

M2D1M-2

KUBE Male (Two Load) Copper Motor Pigtail Disconnect, Wire Size 1 AWG, Body Size 2, Die Color Green
T&B Method Traction Motor Disconnect Lug for Diesel-Electric Locomotives, Cable Size 775/24, Bolt Hole 5/16 Inch on 7/8 Inch Centers, Die Code 76

MD775

T&B Method Traction Motor Disconnect Lug for Diesel-Electric Locomotives, Cable Size 775/24, Bolt Hole 5/16 Inch on 7/8 Inch Centers, Die Code 76
Non-Insulated Female Disconnect, Length 0.59 Inch, Width 0.15 Inch, Tab Size 0.11x0.032, Wire Range #16-14 AWG, Copper, Tin Plated

B10TB

Non-Insulated Female Disconnect, Length 0.59 Inch, Width 0.15 Inch, Tab Size 0.11x0.032, Wire Range #16-14 AWG, Copper, Tin Plated
KUBE Male (One Load) Copper Motor Pigtail Disconnect, Wire Size 250 kcmil, Body Size 4, Die Color Code Yellow

MD250M-4

KUBE Male (One Load) Copper Motor Pigtail Disconnect, Wire Size 250 kcmil, Body Size 4, Die Color Code Yellow
KUBE Male (Two Load) Copper Motor Pigtail Disconnect, Wire Size 2 AWG, Body Size 2, Die Color Brown

M2D2M-2

KUBE Male (Two Load) Copper Motor Pigtail Disconnect, Wire Size 2 AWG, Body Size 2, Die Color Brown
KUBE Male (Two Load) Copper Motor Pigtail Disconnect, Wire Size 12-10 AWG, Body Size 2, Die Color Yellow

M2D1210M-2

KUBE Male (Two Load) Copper Motor Pigtail Disconnect, Wire Size 12-10 AWG, Body Size 2, Die Color Yellow
KUBE Male (Two Load) Copper Motor Pigtail Disconnect, Wire Size 6 AWG, Body Size 1, Die Color Blue

M2D6M-1

KUBE Male (Two Load) Copper Motor Pigtail Disconnect, Wire Size 6 AWG, Body Size 1, Die Color Blue
KUBE Male (Two Load) Copper Motor Pigtail Disconnect, Wire Size 1/0 AWG, Body Size 3, Die Color Pink

M2D10M-3

KUBE Male (Two Load) Copper Motor Pigtail Disconnect, Wire Size 1/0 AWG, Body Size 3, Die Color Pink
KUBE Male (Two Load) Copper Motor Pigtail Disconnect, Wire Size 2 AWG, Body Size 3, Die Color Brown

M2D2M-3

KUBE Male (Two Load) Copper Motor Pigtail Disconnect, Wire Size 2 AWG, Body Size 3, Die Color Brown

How to Install the MD550 Motor-Disconnect Lugs

This guide provides step-by-step instructions for installing and crimping the MD550 motor-disconnect lugs for secure electrical connections.

Estimated time: 30m

Tools needed:

Wire strippers, Crimping tool, Multimeter

Supplies needed:

Copper cable, Terminal connectors, Wire brush

  1. Strip the cable insulation

    Strip the insulation from the copper cable to the length specified in the installation table. Avoid nicking the cable strands to prevent breakage.

  2. Prepare the cable end

    Clean the cable end with a wire brush and insert it into the terminal connector until it stops. Inspect through the peep hole to ensure the cable is fully inserted.

  3. Crimp the connector

    Insert the terminal connector into the appropriate crimping die and compress it in the center of the barrel recess. Ensure you are using the correct die code to avoid defective connections.

  4. Remove sharp edges

    After crimping, carefully remove any sharp edges, flash, or burrs from the connector to ensure safe handling.

  5. Verify connections

    Use a multimeter to verify that all connections are secure and functioning properly before energizing the system.

Frequently Asked Questions about ABB - Installation Products

How are Thomas and Betts products typically installed?

Thomas and Betts products are installed using a variety of methods tailored to specific applications, including the use of flexible cords and cable fittings, non-metallic cable glands, and armored cable fittings. Proper selection of fittings is crucial to match the cable type and installation environment, ensuring durability and preventing physical damage. Tools such as the Blackburn® Comfort Crimp® and HEX-FLEX® systems enhance installation efficiency and reliability, reducing labor time and ensuring secure connections.

What accessories are available for Thomas and Betts products?

Thomas and Betts offers a comprehensive range of accessories for their products, including various cord and cable fittings, non-metallic cable glands, service entrance cable fittings, and armored cable fittings. Their accessories are designed to enhance installation efficiency and ensure compatibility with different cable types and environmental conditions, providing reliable connections for a wide array of applications.

What environmental ratings do Thomas and Betts products have?

Thomas and Betts products feature robust environmental ratings, including NEMA Type 1, 2, 3, 4, 4X, 12, and 13 certifications, as well as IEC 60529 IP66 protection. These ratings ensure that their products are designed to withstand harsh industrial environments, with capabilities to resist dust, water, and corrosion, and operate effectively in a wide temperature range.

What communication protocols do Thomas and Betts products support?

Thomas and Betts products support a wide range of industrial communication protocols, including Ethernet, DeviceNet, PROFIBUS, Modbus, CANopen, and others. This extensive compatibility ensures seamless integration and reliable communication across various industrial automation systems, catering to diverse application needs.

What are the key features of Thomas and Betts products?

Thomas and Betts products are known for their innovative designs, high performance, and compliance with industry standards such as the National Electrical Code and Underwriters' Laboratories. They offer a comprehensive range of rugged and reliable electrical fittings, including liquidtight and dust-tight connections, which enhance installation efficiency and reduce overall project costs. Their products are engineered for durability in harsh environments, ensuring long-term reliability and lower installed costs.

What are the main product lines offered by Thomas and Betts?

Thomas and Betts offers a comprehensive range of product lines including electrical connectors, cable management systems, grounding and bonding solutions, and industrial automation components. Their products are designed for durability and reliability in demanding industrial environments, ensuring optimal performance and safety across various applications.

What technical support does Thomas and Betts offer?

Thomas and Betts offers comprehensive technical support, including access to field application engineers for onsite training and installation assistance. Their technical support staff is available to address inquiries related to product specifications and installation practices, ensuring optimal performance and safety of electrical systems. Additionally, they provide a variety of training programs to enhance the knowledge and skills of users in the field.

What industries and applications are Thomas and Betts products used for?

Thomas and Betts products are utilized across various industries including electrical construction, industrial automation, telecommunications, and utilities. Their extensive range of cord and cable fittings, electrical boxes, and metal framing systems are designed for applications that require durability and reliability in harsh environments, ensuring optimal performance in both permanent and temporary installations.

What certifications and standards do Thomas and Betts products comply with?

Thomas and Betts products comply with critical international certifications including UL (Underwriters Laboratories), CSA (Canadian Standards Association), and CE (European Community). Our products are designed to meet rigorous industrial standards such as NEMA enclosure ratings and IEC 60529 IP ratings, ensuring safety and reliability across various industrial applications.

What are the main product lines offered by Ocal?

Ocal offers a comprehensive range of corrosion-resistant conduit systems, including PVC-coated conduit and fittings, conduit bodies, hazardous location fittings, and strut accessories. Their products are designed to provide superior corrosion protection, featuring a hot-dipped galvanizing process and UL listed Type 4X PVC-coated conduit bodies, ensuring durability in the most demanding environments.