ABB ProStack MB Series 3-Phase...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$760.50
ABB ProStack MB Series 3-Phase Breaker Mounting Kit

ABB ProStack MB Series 3-Phase Breaker Mounting Kit

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Model: MB613

In Stock (leaves warehouse same day if ordered before 3pm ET)

$760.50
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ABB ProStack MB Series 3-Phase Breaker Mounting Kit

The ABB ProStack MB Series Breaker Mounting Kit is a breaker mounting kit engineered to support molded case breaker installation within compatible ABB panelboard and load center assemblies. This MB Series kit is available for 3-phase (3PH) electrical systems, with a System Voltage option covering 240V 3-Phase and 480Y/277V 3-Phase, so contractors can match the correct kit to the distribution equipment on site. Each kit ships 1 EA for straightforward per-unit ordering, making it easy for electrical contractors and facility maintenance teams to stock exactly what a given job requires. As part of a 3PH distribution setup, having a correctly matched MB Series breaker mounting kit on hand helps keep panelboard assembly and breaker replacement work moving without waiting on backordered hardware, regardless of whether the application calls for 240V or 480Y/277V service.

Key Features

  • System Voltage Options: Available in 240V 3-Phase and 480Y/277V 3-Phase, matching common commercial and industrial distribution setups.
  • MB Series Design: Part of ABB's MB Series breaker kit lineup, engineered for consistent fit and function across compatible panelboard platforms.
  • Breaker Mounting Kit: Purpose-built (BRK KIT) hardware for securing and positioning molded case breakers within their intended enclosure or panelboard slot.
  • Individual Packaging: Supplied 1 EA per package, simplifying inventory counts and per-job procurement.
  • ABB Build Quality: Manufactured by ABB, a recognized supplier of electrical distribution components for professional installations.
  • Panelboard Compatibility: Designed to work with compatible ABB panelboard and breaker assemblies rated for 3PH service at the selected system voltage.

Technical Specifications

  • System Voltage: 240V 3-Phase or 480Y/277V 3-Phase (select at checkout)
  • Package Quantity: 1 EA

Typical Applications

  • Panelboard and Load Center Breaker Mounting
  • Three-Phase (3PH) Electrical Distribution Systems
  • Commercial and Industrial Electrical Installations
  • Breaker Replacement and Retrofit Projects
  • Panelboard Assembly and Maintenance Work

Why ABB?

ABB is a long-standing manufacturer of electrical distribution equipment, and the ProStack MB Series Breaker Kit reflects that focus on components designed to fit and function within professional panelboard systems. For contractors and facility teams working on 3PH distribution equipment at either 240V or 480Y/277V, a properly matched breaker mounting kit like this MB Series unit helps keep installations organized, code-compliant, and ready for inspection. Choosing ABB components for breaker mounting hardware supports consistency across a panelboard's overall assembly, reducing compatibility issues during installation or future maintenance. For teams standardizing on ABB panelboards and breakers across a facility or job site, sourcing the matching MB Series breaker kit at the required system voltage helps ensure every mounting point meets the same fit and performance expectations, whether the work is new construction, a retrofit, or routine breaker replacement.

Product Specs

Product Type:
Breaker Mounting Accessory
Voltage Rating:
240V - 480Y/277V
Configuration:
3-Phase
Series:
MB Series
Department:
Electrical
Product Group:
Circuit Protection
Product Subgroup:
Circuit Breakers

ABB MB613 – Frequently Asked Questions

1) Which ABB MB Series breaker kit part number do I order for a 240V three-phase panel versus a 480Y/277V panel?
Two system voltage configurations are offered in the ABB ProStack MB Series breaker mounting kit. Order MB613 for 240V 3-phase service and MB423 for 480Y/277V 3-phase. The kits are not interchangeable across those voltages, so match the part number to the system voltage stamped on the panelboard label before you order.
2) What does an ABB MB Series breaker kit actually include, and does it come with the breaker?
The MB Series kit is mounting hardware only. It secures and positions a molded case breaker in its panelboard or load center slot; the circuit breaker itself is a separate purchase. Each kit is supplied 1 EA, so one kit covers one mounting point and you order per breaker position.
3) Will an ABB MB breaker kit work in a panelboard from another manufacturer?
No. The MB Series kit is built to fit ABB panelboard and breaker assemblies. Breaker mounting kits are panel-specific hardware, so putting ABB mounting hardware into a Square D, Eaton, or Siemens enclosure is not a valid install. If you're working in a Square D NF panelboard, the matching part is that manufacturer's own kit, such as the Square D NF Panelboard Sub-Feed Breaker Kit, 600A, H-Frame.
4) What is the difference between the ABB MB Series breaker kit and the Square D NF sub-feed breaker kit?
They belong to two different panelboard platforms and are not interchangeable. The ABB MB Series breaker kit is a breaker mounting kit for molded case breakers in compatible ABB panelboard and load center assemblies, ordered by system voltage as MB613 for 240V 3-phase or MB423 for 480Y/277V 3-phase. The Square D NF Panelboard Sub-Feed Breaker Kit is built for the Square D NF panelboard series and is specified as a 600A H-frame sub-feed arrangement. Match the kit to the panelboard interior already in the enclosure rather than to the breaker alone.
5) Can I use the 240V MB613 kit on a 208Y/120V three-phase panel?
MB613 is configured for 240V 3-phase systems. 208Y/120V is a separate three-phase system voltage, and the kit's voltage rating is stated as 240V, so confirm the panel nameplate matches 240V 3-phase rather than assuming a low-voltage three-phase panel qualifies. For 480Y/277V work the MB423 configuration is the one to order.
6) I'm a facility maintenance tech replacing a failed breaker in an ABB panel. Do I need a new mounting kit or can I reuse the existing one?
If the existing mounting hardware is intact and you're dropping in the same breaker frame, you reuse it. A new MB Series kit is what you order when the original hardware is damaged, missing, or when you're filling a previously unused breaker position during a retrofit. Breaker replacement and retrofit work is exactly what these kits are stocked for, and keeping one on the shelf avoids stopping a job over mounting hardware.
7) Our facility standardizes on ABB panelboards. What does that mean when a Square D kit shows up as an alternative?
Breaker mounting kits are platform-specific hardware, so a Square D NF series kit belongs to an NF panelboard, not to an ABB interior. For a facility standardized on ABB gear, the MB Series kit keeps every mounting point on the same fit and function, and you select by system voltage: MB613 for 240V 3-phase or MB423 for 480Y/277V 3-phase.
8) We're standardizing a facility on ABB panelboards. Should I stock both MB Series voltage kits?
Stock to match the panels you actually run. A building with 480Y/277V distribution at the switchgear and 240V 3-phase at downstream panels needs both: MB423 for the 480Y/277V positions and MB613 for the 240V ones. Since each kit is packaged 1 EA, you can set min/max levels per breaker position rather than buying in multipacks.
How fast can I get the ABB MB613 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the ABB MB613 come with a warranty?
Absolutely. The ABB MB613 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the ABB MB613?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the ABB MB613 from ZenSupply?
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