Description
ReliaGear A-Series Main Lug Kits
ABB ReliaGear A-Series Main Lug Kits are designed for compatible ReliaGear Pro-Stock lighting panelboard interiors used in main-lug-only and feed-through applications. These pressure-type lug kits are suitable for compatible interiors with either copper or aluminum bus.
This product group includes a 225A MLA1 main lug kit and a 400A MLA41 main lug kit. Select the correct kit according to the panelboard ampere rating, conductor size, interior configuration, and complete ReliaGear assembly requirements.
Product Highlights
- ABB ReliaGear Pro-Stock main lug kits
- Designed for compatible ReliaGear A-Series panelboard interiors
- Pressure-type lug construction
- Suitable for copper or aluminum bus interiors
- 225A and 400A configurations
- Designed for main-lug and compatible feed-through applications
- 225A MLA1 accepts 6 AWG through 350 kcmil conductors
- 400A MLA41 accepts 2 AWG through 600 kcmil or two 1/0 through 250 kcmil conductors
- Two catalog-number options
- Verify panelboard rating and conductor requirements before ordering
Technical Specifications
| Manufacturer | ABB |
|---|---|
| Product Family | ReliaGear Pro-Stock / A-Series |
| Product Type | Main Lug Kit |
| Lug Type | Pressure |
| Available Ampere Ratings | 225A, 400A |
| Available Catalog Numbers | MLA1, MLA41 |
| Bus Compatibility | Copper or Aluminum Bus Interiors |
| 225A Wire Range | 6 AWG - 350 kcmil |
| 400A Wire Range | 2 AWG - 600 kcmil or (2) 1/0 - 250 kcmil |
| Primary Application | Main Lug and Compatible Feed-Through Panelboard Applications |
Construction Details
ABB identifies MLA1 and MLA41 as standard pressure-type main lug kits for ReliaGear Pro-Stock lighting panelboards.
The lug kits provide the conductor termination point for compatible main-lug-only or feed-through panelboard configurations. ABB specifies that the main lug kits are suitable for interiors using either copper or aluminum bus.
The conductor range varies by ampere rating, so the selected kit should be matched to both the panelboard rating and the incoming conductor configuration.
Available Main Lug Kits
Catalog Number & Lug Configuration
| ABB Catalog Number | Ampere Rating | Lug Type | Wire Range |
|---|---|---|---|
| MLA1 | 225A | Pressure | 6 AWG - 350 kcmil |
| MLA41 | 400A | Pressure | 2 AWG - 600 kcmil or (2) 1/0 - 250 kcmil |
Selecting the Correct Main Lug Kit
225A - MLA1
Select MLA1 for compatible 225A ReliaGear Pro-Stock main-lug applications requiring pressure-type lugs with a conductor range of 6 AWG through 350 kcmil.
400A - MLA41
Select MLA41 for compatible 400A ReliaGear Pro-Stock main-lug applications requiring pressure-type lugs accepting 2 AWG through 600 kcmil or two 1/0 through 250 kcmil conductors.
Main Lug Kit Function
Main Conductor Termination
The main lug kit provides the termination point for incoming conductors in a compatible main-lug-only panelboard configuration.
Feed-Through Applications
ABB also specifies lug-kit selection for compatible feed-through applications where additional conductor termination is required.
Bus Flexibility
The standard main lug kits are suitable for compatible ReliaGear interiors using either copper or aluminum bus construction.
Conductor Selection
MLA1 Conductor Range
The 225A MLA1 pressure lug accepts conductors from 6 AWG through 350 kcmil.
MLA41 Conductor Range
The 400A MLA41 pressure lug accepts 2 AWG through 600 kcmil, or two 1/0 through 250 kcmil conductors where the approved configuration is used.
ReliaGear Pro-Stock Panelboard System
ReliaGear Pro-Stock lighting panelboards use a component-based assembly process. ABB's selection guide directs the installer to select the interior, box, front, main or sub-feed breaker kit as applicable, and then the required main lug kit and accessories.
The main lug kit is therefore one component of the complete panelboard assembly and should be coordinated with the exact interior rating and configuration.
Related Main Lug Options
ABB's ReliaGear system also provides other lug configurations for applications requiring oversized lugs, copper lugs, compression lugs, dual-main arrangements, or 200% neutral configurations.
This listing is specifically for the standard MLA1 225A and MLA41 400A pressure main lug kits.
Common Applications
Main-Lug-Only Panelboards
- Commercial electrical distribution
- Lighting panelboard assemblies
- Industrial electrical rooms
- Institutional electrical distribution
- Replacement ReliaGear panelboard projects
Compatible Feed-Through Systems
- Panelboards with feed-through conductors
- Multi-panel distribution arrangements
- Building electrical systems
- ReliaGear Pro-Stock field assemblies
- Compatible copper or aluminum bus interiors
Installation & Selection Considerations
- Confirm the exact ReliaGear panelboard interior before ordering.
- Verify the required panelboard ampere rating.
- Select MLA1 for compatible 225A applications.
- Select MLA41 for compatible 400A applications.
- Verify incoming conductor size and quantity against the lug wire range.
- Confirm whether the application is main-lug-only or feed-through.
- Verify copper or aluminum conductor compatibility as required by the complete equipment listing.
- Confirm all enclosure, front, neutral, grounding, and breaker components separately.
- Use manufacturer-specified conductor preparation and terminal torque requirements.
- De-energize electrical equipment before installation or service.
- Verify absence of voltage before working on electrical equipment.
- Installation should be performed by qualified electrical personnel.
- Follow current ABB instructions and applicable electrical codes.
Product Documents
Review the ABB ReliaGear Pro-Stock Product Guide for main lug kit selection, wire ranges, interior compatibility, feed-through applications, accessories, and complete panelboard selection information.
Need Help Selecting a Main Lug Kit?
Our electrical and industrial product specialists can help review your ReliaGear interior, panelboard ampere rating, conductor size, bus material, main-lug or feed-through configuration, and complete assembly requirements before you order.
Frequently Asked Questions
What are ReliaGear A-Series Main Lug Kits used for?
They provide incoming conductor termination for compatible ReliaGear Pro-Stock main-lug and feed-through panelboard applications.
What is MLA1?
MLA1 is ABB's standard 225A pressure-type main lug kit for compatible ReliaGear Pro-Stock panelboard interiors.
What wire range does MLA1 accept?
MLA1 accepts conductors from 6 AWG through 350 kcmil.
What is MLA41?
MLA41 is ABB's standard 400A pressure-type main lug kit for compatible ReliaGear Pro-Stock panelboard interiors.
What wire range does MLA41 accept?
MLA41 accepts 2 AWG through 600 kcmil conductors, or two 1/0 through 250 kcmil conductors in the listed configuration.
Can these lug kits be used with copper bus interiors?
Yes. ABB specifies that the main lug kits are suitable for interiors with either copper or aluminum bus.
Can these lug kits be used with aluminum bus interiors?
Yes. ABB specifies compatibility with either copper or aluminum bus interiors.
Are MLA1 and MLA41 interchangeable?
No. MLA1 is the 225A configuration and MLA41 is the 400A configuration. Select the kit according to the panelboard rating and conductor requirements.
Does the main lug kit include the complete panelboard?
No. The lug kit is one component of a complete ReliaGear Pro-Stock panelboard assembly. The interior, enclosure, front, breakers, grounding, neutral, and other required components are selected separately.
Where can I find ABB's main lug selection information?
The ABB ReliaGear Pro-Stock Product Guide is linked in the Product Documents section above.
Important Ordering & Installation Notes
- Product: ReliaGear A-Series Main Lug Kits.
- MLA1: 225A standard pressure main lug kit.
- MLA1 wire range: 6 AWG - 350 kcmil.
- MLA41: 400A standard pressure main lug kit.
- MLA41 wire range: 2 AWG - 600 kcmil or (2) 1/0 - 250 kcmil.
- Suitable for compatible interiors with copper or aluminum bus.
- Confirm panelboard ampere rating before ordering.
- Verify incoming conductor size and quantity.
- Confirm main-lug or feed-through requirements.
- Verify all associated ReliaGear panelboard components separately.
- Follow manufacturer terminal and torque requirements.
- De-energize equipment before installation or service.
- Installation should be performed by qualified electrical personnel.
- Follow current ABB instructions and applicable electrical codes.
