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QOU240VH Datasheet(PDF) 8 Page - List of Unclassifed Manufacturers

Part # QOU240VH
Description  QOU Miniature Circuit Breakers and Switches Unit Mount (Cable-in/Cable-out)
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© 2005 Schneider Electric All Rights Reserved
09/2005
QOU Miniature Circuit Breakers and Switches
Application Information
UL HACR Type
HACR is an acronym that designates circuit breakers certified to be used on heating, air conditioning,
and refrigeration loads. The 9th edition of UL489 eliminated special testing requirements for HACR
certification, and the 2005 NEC eliminated the requirement for special HACR marking. HACR marking
is no longer necessary for circuit breakers used in these applications in states and localities where the
2005 NEC has been adopted.
QOU circuit breakers will continue to carry the HACR marking to meet the rquirements of previous
NEC Sections 430 and 440 in areas where the 2005 NEC has not yet been adopted. In older versions
of the NEC, Article 430-53(c) required that each circuit breaker must be of the inverse time type, and
be approved for group installation. The 2005 NEC eliminated the group installation clause of this
article.
The following QOU miniature circuit breakers will continue to carry the HACR label:
10–100 A, one-pole
10–125 A, two-pole
10–100 A, three-pole
High Magnetic
QOU-HM circuit breakers are recommended for area lighting (athletic fields, parking lots, outdoor
signs, etc.) when using lamps of inherent high inrush current or individual dimmer applications, or other
applications where high inrush current exceeds standard tripping conditions. These circuit breakers
are available in 15 A and 20 A only.
QOU-HM circuit breakers are manufactured with the magnetic trip point calibrated at a much higher
level than standard QOU circuit breakers. Table 4 lists the magnetic trip levels to which high-magnetic
circuit breakers are calibrated:
Table 4:
QOU-HM Circuit Breaker Magnetic Trip Levels
QOU-HM Circuit
Breakers
Max. Full-Cycle Magnetic Hold Level
15 A
21–35 x In
315–525 A
20 A
16–26 x In
322–537 A


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