QOU2100 SQUARE D, QOU2100 Datasheet - Page 18

• 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
UL Requirements
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Calibration Retest
Both the 200% and 135% thermal calibration tests are repeated.
Short Circuit
For circuit breakers rated 240 V, two short-circuit tests per pole and one test with all poles connected in
series are performed. For example, a three-pole circuit breaker receives seven short-circuit tests. For
circuit breakers rated 120/240 V, three tests are made with all poles connected in series. The circuit
breaker is connected to the test circuit using wire correctly sized for the rating of the circuit breaker.
The line leads are not more than 4 ft. (1.22 m) in length and the load leads are not more than 10 in.
(25.4 cm) in length.
NOTE: Successful testing requires that the current be interrupted while maintaining the integrity of all
conductors and connections.
Trip Out
The 200% thermal calibration test is repeated following the short-circuit tests.
Dielectric
The circuit breaker must withstand, for one minute, twice its rated voltage plus 1000 V:
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No conditioning of the circuit breaker can take place during or between tests. There also can be no
failure of functional parts at the conclusion of the sequences.
High Available Fault Current Tests
After qualifying a set of circuit breakers to the standard tests, a manufacturer can have additional
circuit breaker samples tested on higher than standard available fault currents.
The following performance requirements apply:
200% Thermal Calibration
Each pole of the circuit breaker must trip within a specified time limit when carrying 200% of its
continuous current rating.
Short Circuit
With the load side terminals connected by 10 in. (25.4 cm) lengths of specified wire, the circuit breaker
is exposed to a short-circuit current. After successful interruption, the circuit breaker is reset and
closed again on the short circuit. An additional short-circuit bus-connected test is required for frame
sizes or construction groups below 100 A.
Trip Out
Each pole of the circuit breaker must trip within a specified time limit when carrying 250% of its
continuous current rating.
Dielectric Withstand
The circuit breaker is subjected to twice its rated voltage, but not less than 900 V.
Between line and load terminals with the circuit breaker open, that is, with the circuit breaker either
tripped or off.
Between terminals of opposite polarity with the circuit breaker open.
Between live parts and the overall enclosure with the circuit breaker both open and closed.
09/2005