Molded Case Circuit Breakers (B Frame)
Schneider Electric PowerPact B Frame molded case circuit breakers are designed to protect electrical systems from damage caused by overloads and short-circuit faults. These breakers are UL 489 listed and utilize proven thermal-magnetic trip units that combine overload protection with instantaneous short-circuit response. PowerPact B Frame MCCBs are commonly used in industrial control panels and commercial building power distribution systems.
PowerPact B Frame circuit breakers feature dual-break rotating contacts that reduce peak current during short-circuit conditions, helping limit system stress and equipment damage. An over-center toggle mechanism provides quick-make, quick-break operation, while internal cross-bars ensure simultaneous opening and closing of all poles using a single operating handle. The handle includes ON, OFF, and TRIPPED positions, offering clear visual indication when a breaker has operated.
Available in 1-, 2-, 3-, and 4-pole configurations, PowerPact B Frame molded case circuit breakers offer interrupting capacities of 18 kA, 35 kA, and 65 kA at 480 volts. Mounting options include back-pan or plate mounting as well as DIN-rail installation, with a wide selection of operating handles and accessories available. These breakers can be used as feeders or incomers and comply with worldwide standards for overload and short-circuit protection.
FAQs
Q: What is a B Frame molded case circuit breaker?
A B Frame molded case circuit breaker is a PowerPact MCCB designed for industrial and commercial applications, providing thermal-magnetic protection against overloads and short circuits.
Q: What is thermal-magnetic protection?
Thermal-magnetic protection combines two technologies: a thermal element that responds to sustained overcurrent conditions and a magnetic element that reacts instantly to short circuits or sudden current spikes.
Q: What interrupting ratings are available for PowerPact B Frame breakers?
PowerPact B Frame circuit breakers are available with interrupting ratings of 18 kA, 35 kA, and 65 kA at 480 volts.
Q: What mounting options are available?
These breakers are available with back-pan or plate mounting as well as DIN-rail mounting, along with multiple handle and accessory options.
Q: Where are PowerPact B Frame MCCBs typically used?
They are commonly used in industrial control panels and commercial electrical distribution systems as feeder or incomer protection devices.
Why Buy Molded Case Circuit Breakers (B Frame) from RSP Supply
RSP Supply offers a complete selection of Schneider Electric PowerPact B Frame molded case circuit breakers for industrial and commercial power applications. Our inventory includes multiple pole configurations, interrupting ratings, mounting options, and accessories to meet application-specific requirements. Customers rely on RSP Supply for knowledgeable technical support, dependable sourcing, and circuit protection solutions designed for long-term reliability and compliance.