Square D 9421LB1 PowerPact B-Frame Handle Lock On
125A Frame
The Square D 9421LB1 Handle Lock On extends the operational capabilities of PowerPact B-Frame circuit breakers, delivering reliable and consistent performance enhancement in commercial, industrial, and institutional power distribution systems requiring advanced circuit breaker functionality and operational flexibility. This rotary handle provides full compatibility across the entire PowerPact B-Frame circuit breaker lineup including BD (standard), BG (high), BJ (extra high), and BK (maximum) interrupting capacity types in 1-pole through 4-pole configurations for broad applicability. Designed and manufactured at Schneider Electric's production facilities using quality-controlled materials and rigorous manufacturing processes, it ensures reliable and consistent performance in professional electrical installations worldwide. The installation procedure follows industry-standard practices documented in the PowerPact B-Frame technical library and installation guides, allowing qualified electricians and electrical contractors to complete the work efficiently with minimal system disruption and downtime. Certified to applicable UL, CSA, and IEC standards, the 9421LB1 integrates into code-compliant electrical systems across North America and international markets. Schneider Electric's authorized distributor network provides ready availability, technical support resources, and comprehensive product documentation. This accessory complements the PowerPact B-Frame circuit breaker platform as part of a comprehensive and integrated approach to reliable commercial, industrial, and institutional power distribution system protection and operational enhancement. The 9421LB1 is backed by Schneider Electric's comprehensive warranty program and worldwide technical support network. It is available through authorized electrical distribution channels including major wholesalers and online industrial suppliers.
Key Features
This PowerPact MCCB features thermal-magnetic trip protection rated NoneA at 600V AC. Frame size: 125A. Designed for reliable overcurrent protection in industrial and commercial power distribution systems.
Applications
Suitable for main distribution panels, motor control centers, switchboards, and feeder circuit protection in industrial facilities, data centers, and commercial buildings. Compliant with UL, CSA, IEC (as applicable).
