The ABB 6644424A1 Power Monitoring Module is an industrial control system spare part reference associated with power monitoring hardware. This product listing also covers ABB 1948506C8 System Power Bus Bar, ABB 6642626-1 IEMMU21 Backplane, and the related backplane references 6642626C1, 6642626C1R, 6642626E1R, 6642626G1 and 6642626J1.
These references are grouped for convenient spare parts purchasing. However, a power monitoring module, power bus bar and module mounting unit backplane perform different functions. Customers should select the exact part number required by their installed ABB Bailey or Harmony control system.
ABB 6644424A1 Power Monitoring Module and Related Hardware Overview
Industrial distributed control systems rely on a combination of power equipment, mounting hardware and electrical interconnections. These components support different parts of the installed control system architecture. When an older system requires maintenance, identifying the correct spare part is an important first step.
The 6644424A1 reference is listed as a power monitoring module. The 1948506C8 reference is identified as a system power bus bar, while the 6642626 series contains backplane references associated with IEMMU21 and IEMMU22 module mounting equipment.
Although these components may appear in related maintenance projects, they are not interchangeable. Their electrical functions, physical interfaces and installation requirements must be evaluated individually.
Wuhan Yuli Automation Technology Co., Ltd. assists international customers with industrial automation spare parts inquiries. Customers can submit several related references in one request while maintaining clear identification of each required item.
Available ABB Power Monitoring and Backplane Models
| Part Number | Product Reference | Purchasing Notes |
|---|---|---|
| 6644424A1 | Power Monitoring Module | Confirm exact module identification |
| 1948506C8 | System Power Bus Bar | Verify original power distribution assembly |
| 6642626-1 | IEMMU21 Backplane Reference | Confirm mounting unit and revision |
| 6642626C1 | IEMMU21/22 Backplane Reference | Match original part number |
| 6642626C1R | IEMMU21/22 Backplane Reference | Verify suffix and revision |
| 6642626E1R | IEMMU21/22 Backplane Reference | Confirm compatibility |
| 6642626G1 | IEMMU21/22 Backplane Reference | Check original assembly details |
| 6642626J1 | IEMMU21/22 Backplane Reference | Confirm exact ordering reference |
The descriptions above follow the supplied model list. Detailed electrical specifications and interchangeability have not been independently verified for every reference.
Functions and Product Features
6644424A1 Power Monitoring Module
The ABB 6644424A1 is identified as a power monitoring module. Monitoring hardware is used within compatible control equipment to support the system’s specified power supervision arrangement.
Before purchasing, customers should confirm the exact model, associated system and installed hardware configuration. No particular monitoring threshold, alarm output or electrical rating is claimed without verified technical documentation.
1948506C8 System Power Bus Bar
The ABB 1948506C8 is listed as a system power bus bar. A bus bar is a component used for electrical distribution or interconnection within an equipment assembly.
The exact conductor arrangement, mounting dimensions and current rating depend on the original design. Customers should not substitute another bus bar based solely on visual similarity or a general product description.
6642626-1 IEMMU21 Backplane
The 6642626-1 reference is associated with an IEMMU21 backplane. Backplanes form part of the mechanical and electrical interface within compatible module mounting arrangements.
For replacement procurement, confirm the existing mounting unit, connector layout and complete part number. A matching physical outline alone does not prove electrical compatibility.
6642626C1 and 6642626C1R
These references are included in the IEMMU21/22 backplane group. Their different suffixes should be preserved in purchase requests and quotations.
Do not assume that the additional R suffix identifies a particular technical feature or guarantees replacement compatibility. Obtain manufacturer or qualified engineering confirmation before substitution.
6642626E1R, 6642626G1 and 6642626J1
These three references are also listed as IEMMU21/22 backplane variants. Their ordering codes may identify different hardware configurations or revisions, but the precise differences require confirmation.
Customers should compare the original nameplate, system drawings and spare parts list before selecting a replacement. This is especially important when the equipment has undergone previous maintenance or modifications.
Industrial Applications
These ABB power monitoring and backplane references may be relevant to maintenance projects involving compatible industrial automation installations. Common purchasing environments include:
- Power Generation: Control system spare parts and maintenance planning.
- Oil and Gas: Replacement procurement for installed automation hardware.
- Chemical Processing: Maintenance of power distribution and module mounting assemblies.
- Pulp and Paper: Support for established process control infrastructure.
- Water Treatment: Control cabinet maintenance and component replacement.
- Industrial Manufacturing: Spare parts inventory and equipment refurbishment.
These are general industry examples rather than verified model-specific installations. Confirm the exact system application before purchasing any listed component.
Selection and Purchasing Guide
Step 1: Identify the Required Component Type
Determine whether the maintenance request concerns a power monitoring module, a system power bus bar or a backplane. These product categories have different purposes.
Step 2: Match the Complete Part Number
Record the exact identification, including suffixes such as C1R or E1R. For example, 6642626C1 and 6642626C1R should remain separate purchase references unless an approved replacement relationship is documented.
Step 3: Check the Installed Assembly
For IEMMU21/22 backplane inquiries, identify the original module mounting unit and associated hardware. Provide a photograph of the installed component or the original equipment drawing when possible.
Step 4: Confirm Product Condition and Scope
Specify whether you require a new, original part, an individual board, or a complete assembly. Confirm which connectors, mounting accessories or related parts are included in the offered item.
Step 5: Request a Formal Quotation
Submit the model, quantity, required revision and shipping destination. Review the offered condition, availability, lead time and warranty before issuing a purchase order.
Why Choose Wuhan Yuli Automation?
Wuhan Yuli Automation Technology Co., Ltd. supplies industrial automation components and spare parts to customers worldwide. Our portfolio includes ABB control modules, communication hardware, industrial power supplies, module mounting equipment and related components.
Customers can request multiple ABB references in one inquiry while receiving separate model-specific pricing and availability information. This helps purchasing teams organize spare parts requirements for maintenance projects.
Our standard commercial offering focuses on new, original products with at least a one-year warranty, subject to the final quotation. Exact condition, revision, included accessories and delivery terms must be confirmed before purchase.
For related ABB power supply hardware, explore our ABB MPS III Power Supply product page. This related listing is provided for product discovery and does not establish interchangeability.
For manufacturer resources, visit the official ABB Control Systems website. Consult the applicable original equipment documentation for technical verification.
Frequently Asked Questions
What is the ABB 6644424A1 Power Monitoring Module?
6644424A1 is a power monitoring module reference. Its exact functions, electrical characteristics and system compatibility should be verified using the original equipment documentation.
What is ABB 1948506C8?
1948506C8 is listed as a system power bus bar. Buyers should confirm the original assembly, physical configuration and electrical requirements before ordering.
What is the ABB 6642626-1 backplane?
6642626-1 is identified as an IEMMU21 backplane reference. Confirm the mounting unit and original part number before selecting it for replacement.
Are 6642626C1 and 6642626C1R interchangeable?
Interchangeability has not been established. The exact suffix and any manufacturer-approved replacement information should be checked before purchase.
Can 6642626E1R, 6642626G1 and 6642626J1 replace one another?
No replacement relationship is assumed. Each reference should be treated as a distinct part until compatibility has been verified.
Do these items include a complete IEMMU21 or IEMMU22 mounting unit?
Not necessarily. The supplied item may be an individual component. Confirm the quotation scope and included accessories before ordering.
How can I request pricing and availability?
Send the complete model number, quantity, revision requirements and shipping destination to Wuhan Yuli Automation. A photograph of the original part may help with identification.
Request a Quote
ABB Power Monitoring, Bus Bar and Backplane Parts
Need 6644424A1, 1948506C8, 6642626-1 or a 6642626-series backplane? Contact Wuhan Yuli Automation for model verification, availability and a formal quotation.
Please include: Exact part number, quantity, required revision, product condition and destination country.
Email: sales@wuhanyuli.com
