Siemens MBKBL1 Main Breaker Kit

Product Description

The SIEMENS MBKBL1 is a main breaker kit designed for use with compatible Siemens load centers. This kit allows a qualified electrician to add or replace a main breaker in a supported panelboard, providing a means of disconnecting all branch circuits simultaneously. It serves as a critical overcurrent protection component in residential and light commercial electrical distribution systems. The kit ships ready for installation and is sized to fit specific Siemens enclosure configurations. Licensed electricians perform this work as part of panel upgrades, service entrance modifications, or main disconnect additions.

This main breaker kit is suited for residential and light commercial applications where a main disconnect is required at the load center. It is typically installed during panel upgrades, new construction service entrance work, or retrofits where a main breaker is being added to an existing Siemens load center. Consult the load center documentation to confirm the correct breaker kit for the specific enclosure before ordering.

Key Features

• Designed to add or replace a main breaker in compatible Siemens load centers
• Provides a single-point shutoff for all branch circuits in the panel
• OEM-style replacement kit for Siemens panelboard enclosures
• Compact form factor suited to standard Siemens load center footprints

Compatibility

Designed as an OEM-style main breaker kit replacement for compatible Siemens load center enclosures. Verify load center model compatibility using Siemens documentation before installation.

Installation Notes

Installation must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and all applicable local codes. De-energize the service entrance and confirm the absence of voltage before beginning any work inside the load center. Do not work on a live panel. Torque all connections to the values specified on the load center label or in the manufacturer documentation.

Technical Specifications

• Weight: 1.764 pounds
• Package Dimensions (L x W x H): 13.780 x 8.268 x 4.331 inches
• UPC: 78364327104

Standard Information

• Brand: SIEMENS
• Manufacturer Part Number: MBKBL1