Circuit breakers provide overload and short circuit protection. They may also be used to provide ground-fault protection of equipment at a minimum 30mA level. These are designed to meet UL 1053 standard for equipment protection. Some breakers help provide people protection when a fault current to ground is 6mA or more to meet UL 943 Class A standard.

Related Products

• QO(B)-GFI – Available in 1-2 pole design from 15-60A and 3-pole design from 15-50A up to 120/240Vac for people protection at 5mA
• QO(B)-EPD – Available in 1-2 pole design from 15-60A and 3-pole design from 15-50A up to 120/240Vac for equipment protection at 30mA with no intentional delay
• PowerPact® D-frame – Available in 3 pole design from 150-600A up to 600Vac for a maximum 600A ground fault equipment protection with eight adjustable ground fault pickup levels from 0.2-1 times the nominal current and four adjustable tripping delays 60, 140, 230, 350 ms
• PowerPact P-frame – Available in 2-3-4 pole design from 100-1200A up to 600Vac for a maximum 1200A ground fault equipment protection with adjustable nine ground fault pickup levels and five tripping delays using Micrologic 6.0 trip unit
• PowerPact R-frame – Available in 2-3-4 pole design from 240-3000A up to 600Vac for a maximum 1200A ground fault equipment protection with adjustable nine ground fault pickup levels and five tripping delays using Micrologic 6.0 trip unit
• MasterPact® NT Series – Available in 3-4 pole design from 100-1200A up to 600Vac for a maximum 1200A ground fault equipment protection with adjustable nine ground fault pickup levels and five tripping delays using Micrologic 6.0 trip unit
• MasterPact NW Series – Available in 3-4 pole design from 100-6000A up to 600Vac for a maximum 1200A ground fault equipment protection with adjustable nine ground fault pickup levels and five tripping delays using Micrologic 6.0 trip unit