Brochure

PowerPact H-, J-, and L-Frame Circuit Breakers
Energy Management
71
02/2016
© 2011–2016 Schneider Electric
All Rights Reserved
Additional Technical Characteristics:
• Contact wear
Each time PowerPact H-, J-, and L-frame circuit breakers open, the Micrologic 5/6 trip unit
measures the interrupted current and increments the contact-wear indicator as a function of the
interrupted current, according to test results stored in memory. Breaking under normal load
conditions results in a very slight increment. The indicator value may be read on the front display
module. It provides an estimation of contact wear calculated on the basis of the cumulative forces
affecting the circuit breaker. When the indicator reaches 80%, it is advised to replace the circuit
breaker to ensure the availability of the protected equipment.
• Circuit breaker load profile
Micrologic 5/6 trip units calculate the load profile of the circuit breaker protecting a load circuit. The
profile indicates the percentage of the total operating time at four current levels (% of I
n
):
— 0 to 49% I
n
— 50 to 79% I
n
— 80 to 89% I
n
—  90% I
n
This information can be used to optimize use of the protected devices or to plan ahead for
expansion.
Motor Circuit Protectors (AC Only)
See Section 5 for information about PowerPact H-, J- and L-frame electronic motor circuit protectors
(MCP) with trip units:
• Micrologic 1.3 M
• Micrologic 2 M