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What is the difference in the Micrologic 6.0P and the 7.0P trip units

Issue:
What is the difference in 6P and 7P trip units?
Compare 6P versus 7P trip unit

Product Line:
Micrologic Trip Units and Circuit Breakers

Environment:
Applies to Micrologic Trip Units installed in Powerpact P, R, and Masterpact NT and NW circuit breakers (sold in the USA)

Resolution:
Both the Micrologic 6.0P and 7.0P trip units provides ground fault protection (earth fault, earth leakage), however there are important differences between them.
The following is a brief comparison of a few features (this list is not complete).
Nomenclature
  • The 6.0P is called a ground fault or earth fault trip unit
  • The 7.0P is called residual earth leakage (Vigi) trip unit.
Availability:
  • The 6.0P is available in many parts of the world, including the US.
  • The 7.0P is available in many parts of the world, but is NOT available in the US (as of 11/13/2017).
Application:
  • The 6.0P ground fault trip point (in amperes) is much higher.
  • The 7.0P ground fault trip point (in amperes) is much lower.
Setting the Ground Fault Trip Pickup Point:
  • The 6.0P ground fault trip point is adjustable, and is based on the combination of the Sensor Plug In value, and the Ig dial setting.
  • The 7.0P ground fault trip point is adjustable, and is based only on the IDn dial setting (independent of the Sensor Plug In value)
Ground Fault Trip Pickup Range (in amperes)
  • The 6.0P ground fault trip pickup range varies considerably from breaker to breaker, from a low range of 75A-250A, to a high range of 500A-1200A.
  • The 7.0P ground fault trip pickup range does not vary from breaker to breaker, and has a range of 1/2A-30A.
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