You may also like
ABB Tmax XT4 Molded Case Circuit Breaker, Thermal Magnetic Adjustable, 3 Poles
Model: ABB-XT4HE3225BFF000XXX
ABB Tmax XT4 Molded Case Circuit Breaker, Thermal Magnetic Adjustable, 3 PolesThe ABB Tmax XT4 is a molded case circuit breaker from ABB's Tmax XT series, built on the XT4 frame rated to 250A, 600V...
ABB
$9,866.96
ABB XT4 Series 3-Pole Molded Case Circuit Breaker Kit
The ABB XT4 Series 3-Pole Molded Case Circuit Breaker Kit is a manufacturer-sourced breaker kit built for ABB's XT4 molded case circuit breaker platform, configured specifically for 3-pole, three-phase distribution applications. Supplied and packaged as a single unit (1 ea), this kit supports installation, retrofit, replacement, and accessory-completion work on existing XT4-based commercial and industrial electrical distribution equipment. As a genuine ABB component, it gives electrical contractors and facility maintenance teams a reliable, code-ready option for keeping XT4 platform equipment properly configured.
Key Features
- XT4 Series Platform: Part of ABB's XT4 molded case circuit breaker family, engineered for dependable overcurrent protection in commercial and industrial panelboards and switchgear.
- 3-Pole Configuration: Configured for three-pole circuits, matching the 3-pole designation on the product, suited to three-phase distribution applications.
- Breaker Kit Format: Supplied as a breaker kit (BKR KIT) rather than a fully assembled standalone unit, supporting installation, retrofit, or accessory-completion tasks on existing XT4 platform equipment.
- Single-Unit Packaging: Packaged 1 ea, simplifying inventory tracking, per-unit ordering, and stockroom counts for electrical distributors and contractors.
- Manufacturer-Sourced Compliance Documentation: ARRA and Buy American Act (BAA) compliance status for this kit is available directly from the manufacturer upon request, allowing project teams to confirm sourcing requirements before specification.
- Genuine ABB Component: Sourced as an authentic ABB part for the XT4 platform, helping ensure proper fit, function, and long-term compatibility within XT4-based breaker installations.
Technical Specifications
- Series: XT4
- Country of Origin: UKN
- Packaging: 1 ea
Typical Applications
- Commercial and Industrial Panelboards
- Three-Phase Electrical Distribution Systems
- Molded Case Circuit Breaker Retrofits and Upgrades
- Electrical Maintenance and Replacement Parts Programs
- New Construction and Renovation Electrical Projects
Why ABB?
ABB is a manufacturer of electrical distribution equipment, and the XT4 molded case circuit breaker platform is engineered to support dependable overcurrent protection in demanding commercial and industrial environments. Specifying a genuine ABB XT4 breaker kit, packaged and sourced directly from the manufacturer, helps ensure proper fit and function within existing XT4-based breaker installations, giving contractors and facility teams confidence in long-term reliability and code-compliant performance.
Manufacturer Resources
Spec Sheet
Product Specs
- Series:
- XT4
- Product Type:
- Circuit Breaker
- Configuration:
- 3-Pole
- Department:
- Electrical
- Product Group:
- Wiring Devices
- Product Subgroup:
- Circuit Breakers
ABB MBB33 – Frequently Asked Questions
1) Is the ABB MBB33 a complete standalone circuit breaker or a kit for an existing XT4 breaker?
MBB33 is supplied as a breaker kit (BKR KIT) for ABB's XT4 molded case platform, not a fully assembled standalone breaker. It is used for installation, retrofit, replacement, and accessory-completion work on equipment already built around XT4 frames. If you are building a new panelboard from scratch and need the breaker itself, confirm you are ordering the XT4 breaker frame as well as the kit.
2) Can I use the ABB XT4 3-pole kit on a Square D PowerPacT breaker?
No. The kit is an ABB part built for the XT4 molded case platform and is matched to XT4 frames. Square D molded case breakers, including the PowerPacT B thermal magnetic and the PowerPacT Q I-Line, are a separate platform and take their own accessories. Mixing platforms on a molded case breaker is not something to improvise in the field.
3) Is a Square D PowerPacT B breaker a direct replacement for an ABB XT4 MBB33 breaker kit?
No. The MBB33 is a genuine ABB component built for ABB's XT4 molded case circuit breaker platform, so it is intended to fit and function within existing XT4-based equipment. The Square D PowerPacT B is a thermal magnetic circuit breaker on Square D's own molded case platform. Both are molded case breakers, but they are different manufacturers' platforms with different mounting and interior arrangements, so a PowerPacT B is a panel-level alternative rather than a drop-in swap for an XT4. If the existing gear is XT4, stay on XT4; if you are rebuilding the distribution section, PowerPacT B is a molded case option to evaluate.
4) For a three-phase panelboard, what is the difference between the ABB XT4 MBB33 and a Square D PowerPacT Q I-Line breaker?
The ABB XT4 MBB33 is configured 3-pole for three-phase distribution and is supplied as a breaker kit for ABB's XT4 molded case platform, so it belongs in gear already built around XT4. The Square D PowerPacT Q is an I-Line breaker, meaning it is designed for Square D I-Line bus connection rather than a bolt-in to an ABB interior. Choose by the gear you are feeding: XT4-based switchgear and panelboards take the MBB33, I-Line panelboards take the PowerPacT Q.
5) What should a facility maintenance team order to keep XT4 panelboards stocked as spares?
The MBB33 kit is packaged 1 ea, so it counts one-for-one in a stockroom and can be ordered per unit rather than in a carton multiple. That suits MRO spares programs and replacement parts lists for commercial and industrial panelboards and switchgear running on the XT4 platform.
6) Is this a DIN rail mount breaker?
No. The XT4 is ABB's molded case circuit breaker platform, which mounts in panelboards and switchgear rather than clipping to DIN rail. If your enclosure is DIN rail based, a miniature circuit breaker like the Square D C60 UL489 DIN rail mount MCB is the right family to look at.
7) I need a 1-pole breaker for a 120V control circuit, not the ABB XT4 3-pole kit. What should I look at?
The ABB XT4 MBB33 is a 3-pole unit for three-phase distribution, so it is the wrong shape for a single-phase control circuit. For that job the Square D Multi9 C60 is a 1-pole C-curve miniature circuit breaker rated 120V AC, and the Square D C60 UL489 miniature circuit breaker mounts on DIN rail, which suits control panel and small branch circuit work.
8) Can I use a miniature circuit breaker instead of the ABB XT4 MBB33 on a branch circuit?
Only if the application is genuinely a small branch circuit and the enclosure accepts DIN rail devices. The MBB33 is a molded case circuit breaker in a 3-pole configuration for commercial and industrial panelboards and switchgear. The Square D C60 is a UL489 miniature circuit breaker that mounts on DIN rail, and the Multi9 C60 1-pole C-curve device is rated 120V AC. Those are single-pole DIN rail devices for control panels and light branch loads, not a substitute for a 3-pole molded case breaker feeding a three-phase distribution section.
9) Can I confirm Buy American Act or ARRA status on the ABB XT4 MBB33 for a public project?
ARRA and Buy American Act compliance status for the MBB33 kit is issued by ABB directly on request, so a project team specifying for a federally funded job can obtain the manufacturer's statement before the submittal goes in. Country of origin on the record is listed as UKN.
How fast can I get the ABB MBB33 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 MBB33 come with a warranty?
Absolutely. The ABB MBB33 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 MBB33?
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 MBB33 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.