Circuit Breakers

PowerPacT J-Frame circuit breakers are designed to protect electrical systems from damage caused by overloads and short circuits. PowerPacT J-Frame circuit breakers are available with either thermal magnetic or MicroLogic electronic trip protection units...

Square D LA molded case circuit breakers provide thermal magnetic protection. Their primary function is automatic opening of a circuit under overload or short circuit conditions or manual opening. LA circuit breakers contain thermal (overload) and...

QO and QOB one, two, and three pole thermal magnetic circuit breakers provide overcurrent protection and switching on AC systems. These circuit breakers have an over center, trip free toggle mechanism with quick make, quick break action and positive...

PowerPacT R-Frame circuit breakers are designed to protect electrical systems from damage caused by overloads and short circuits. PowerPacT R-Frame circuit breakers have either a fixed long time electronic trip unit, ET 1.0I, or Micrologic trip units...

PowerPacT R-Frame circuit breakers are designed to protect electrical systems from damage caused by overloads and short circuits. PowerPacT R-Frame circuit breakers have either a fixed long time electronic trip unit, ET 1.0I, or Micrologic trip units...

PowerPacT H-Frame circuit breakers are designed to protect electrical systems from damage caused by overloads and short circuits. PowerPacT H-Frame circuit breakers are available with either thermal magnetic or Micrologic electronic trip protection units...

PowerPacT B-Frame brings thermal-mechanical circuit protection in a compact size and offers a wide range of accessories, auxiliaries, and connection options. This PowerPacT B-Frame circuit breaker provides thermal magnetic circuit protection with a...

PowerPacT L-Frame circuit breakers are designed to protect electrical systems from damage caused by overloads and short circuits. PowerPacT L-Frame circuit breakers are available with electronic trip units. All PowerPacT L-Frame circuit breakers are...

PowerPacT B-Frame brings thermal-mechanical circuit protection in a compact size and offers a wide range of accessories, auxiliaries, and connection options. This PowerPacT B-Frame circuit breaker provides thermal magnetic circuit protection with a...

PowerPacT H-Frame circuit breakers are designed to protect electrical systems from damage caused by overloads and short circuits. PowerPacT H-Frame circuit breakers are available with either thermal magnetic or Micrologic electronic trip protection units...

PowerPacT M, P, and R-Frame circuit breakers offer a whole range of field installable accessories, allowing modifying the circuit breaker at any time in the design and build cycle. This part provides auxiliary contacts used in PowerPacT H, J, L, M, P,...

PowerPacT J-Frame circuit breakers are designed to protect electrical systems from damage caused by overloads and short circuits. PowerPacT J-Frame circuit breakers are available with either thermal magnetic or MicroLogic electronic trip protection units...

PowerPacT H-Frame circuit breakers are designed to protect electrical systems from damage caused by overloads and short circuits. PowerPacT H-Frame circuit breakers are available with either thermal magnetic or Micrologic electronic trip protection units...

QO® Circuit Breaker Load Centers, QO3100BNS, from Square D® are Underwriters Laboratories (UL) Listed and CSA rated panelboards. They are designed to meet residential, commercial, and industrial requirements to protect electrical systems, equipment, and...

QOU unit mount miniature circuit breakers (cable-in/cable-out) are ideal for OEM applications. QOU breakers are one, two or three pole thermal magnetic circuit breakers which provide overcurrent protection and switching on ac and dc systems. These...

E-Frame Breaker are Lighting Panelboard Circuit breakers that are proven effective and reliable which provide a wide variety or robust features that are use specifically in Square D NF Panelboards. This range of breaker is ideally designed to offer...

QO and QOB one, two, and three pole thermal magnetic circuit breakers provide overcurrent protection and switching on AC systems. These circuit breakers have an over center, trip free toggle mechanism with quick make, quick break action and positive...

PowerPacT M-Frame circuit breakers are designed to protect electrical systems from damage caused by overloads and short circuits. PowerPacT M-Frame circuit breakers have either a fixed long time electronic trip unit or an adjustable amperage version...

PowerPacT H-Frame circuit breakers are designed to protect electrical systems from damage caused by overloads and short circuits. PowerPacT H-Frame circuit breakers are available with either thermal magnetic or Micrologic electronic trip protection units...

QO and QOB one, two, and three pole thermal magnetic circuit breakers provide overcurrent protection and switching on AC systems. These circuit breakers have an over center, trip free toggle mechanism with quick make, quick break action and positive...