QOU2100 SQUARE D, QOU2100 Datasheet - Page 2

• Manufacturer Part Number: QOU2100
• Description: CIRCUIT BREAKER, THERMAL MAG, 2P, 100A
• Manufacturer: SQUARE D
• Series: QOUr

Specifications of QOU2100

• Actuator Style: Toggle
• No. Of Poles: 2
• Current Rating: 100A
• Voltage Rating Vdc: 48V
• Voltage Rating Vac: 240V
• Mounting Type: DIN Rail
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

QOU Miniature Circuit Breakers and Switches
Application Information
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APPLICATION INFORMATION
QOU Miniature Circuit Breaker Types
Miniature molded case circuit breakers are intended for use in residential and commercial applications.
They are tested and listed according to UL Standard 489 and CSA Standard C22.2 No. 5-02 for
molded case circuit breakers and enclosures.
QOU miniature circuit breakers are unit-mount (lug/lug) thermal-magnetic circuit breakers which:
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Non-automatic Switches
QOU non-automatic switches are intended for use as disconnect devices only. UL Standard 489
requires switches to be protected by a thermal-magnetic circuit breaker (or fuse) of equivalent rating.
QOU switches are UL Listed for use on circuits capable of delivering not more than 10,000 amperes
when protected by an equivalent rated circuit breaker or fuse. QOU switches contain no automatic
tripping mechanisms and do not provide overcurrent protection.
Description
QOU miniature circuit breakers and switches are available for surface-, flush-, or DIN rail mounted
applications in one-, two-, and three-pole constructions. QOU miniature circuit breakers are used for
overcurrent protection and switching on both ac and dc electrical systems. QOU circuit breakers and
switches measure 0.75 in. (19 mm) wide per pole. Two- and three-pole circuit breakers are both
equipped with an internal crossbar for common tripping of all poles. QOU switches are available in
one-pole, 60 ampere and two- and three-pole, 60, 100 and 125 ampere construction.
Cases for QOU miniature circuit breakers and switches are constructed of a glass-reinforced insulating
material that provides high dielectric strength. Current carrying components are isolated from the
handle. The handle position indicates whether the circuit breaker is off, on or tripped.
Applications
One-pole QOU miniature circuit breakers rated 120/240 Vac are UL Listed for use on 120/240 Vac
single-phase, three-wire or 208Y/120 Vac three-phase, four-wire electrical systems.
Two-pole QOU circuit breakers rated 120/240 Vac are UL Listed for use on 120/240 Vac single-phase,
three-wire or 208Y/120 Vac three-phase, four-wire electrical systems. They cannot be used on 240
Vac delta systems. Use QOU-H two-pole circuit breakers rated 240 Vac on 240 Vac delta and 240 Vac
single-phase, two wire systems.
Three-pole QOU circuit breakers rated 240 Vac are UL Listed for use on any system where the maximum
phase-to-phase or phase-to-ground voltage is 240 Vac or less.
For application information on other systems, contact your local field office
Provide a means to manually open a circuit.
Automatically open a circuit under overload or short circuit conditions.
Feature common tripping of all poles.
Have a Visi-Trip
Can be flush-, surface-, or DIN rail-mounted.
Has lugs at both ends (cable-in/cable-out construction)
Operate in any position.
Are fully tested, UL Listed, and CSA certified for reverse connection without restrictive line/load
markings.
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trip indicator.
09/2005