Pro-Stock XT4 3-Pole Main Breaker Kit

The ABB MBB33 is a ReliaGear Pro-Stock XT4 3-pole main breaker kit used with ABB lighting panelboard and panelboard accessory applications. This kit is designed for installing an XT4-frame main breaker into compatible ABB ReliaGear / Pro-Stock panelboard assemblies.

This is a mounting kit only and is intended for use with a compatible 3-pole XT4 breaker. The circuit breaker is not included unless specifically stated by the supplier.

Key Features

• Catalog number: MBB33
• ABB description: PRO-STK XT4 3 POLE M BKR KIT
• ReliaGear / Pro-Stock panelboard accessory
• Designed for XT4-frame breaker applications
• 3-pole main breaker kit configuration
• Used for main breaker installation in compatible lighting panelboards
• Commonly associated with 150A to 225A 3-pole XT4 main breaker applications
• UPC: 783175878505

Typical Applications

Used in commercial and industrial panelboard installations where an ABB XT4 3-pole main breaker is required as part of a ReliaGear or Pro-Stock lighting panelboard assembly.

Compatibility Notes

MBB33 is intended for compatible ABB ReliaGear / Pro-Stock panelboard interiors and XT4-frame breaker installations.

Some distributor references identify this kit as the replacement for older A-Series catalog number MB233.

Always verify panelboard series, interior configuration, voltage, amp rating, and breaker frame before installation.

Important Notes

This product is a main breaker mounting kit and does not include the breaker unless otherwise specified.

Installation should be performed by qualified electrical personnel according to ABB documentation and applicable electrical codes.

Confirm compatibility with the exact panelboard and breaker being used before ordering.

Product Documents

Spec Sheet