The Square D QOB1202100 is a 1 Pole thermal magnetic molded case circuit breaker with a current rating of 20 Amps and a voltage rating of 120/240VAC. It has an interrupting rating of 10kAIC at 120/240VAC. The QOB1202100 has a bolt-on connection type and includes long time and instantaneous trip functions.
What panelboards accept the Square D QOB1202100 circuit breaker?
The QOB1202100 is a bolt-on breaker designed for use in Square D NQ and NQOD panelboards. It cannot be installed in standard QO load centers, which require plug-on breakers.
What does the 2100 suffix mean on the QOB1202100?
The 2100 suffix indicates that this circuit breaker includes a factory-installed alarm switch. This switch provides remote indication when the breaker trips due to a fault.
How does the QOB1202100 mount into the panel?
This breaker features a bolt-on connection. It secures directly to the panel bus bar with a screw, providing a robust connection commonly required in commercial and industrial applications.
What wire sizes are accepted by the terminals on the QOB1202100?
The terminals on this 20-amp breaker accept wire gauges from 14 AWG to 8 AWG for both copper and aluminum conductors.
Does the QOB1202100 provide ground fault or arc fault protection?
No, this is a standard thermal-magnetic circuit breaker. It provides overload and short-circuit protection but does not include GFCI or AFCI capabilities.
Can I use a standard QO120 in place of the QOB1202100?
No. The QO120 is a plug-on breaker, while the QOB1202100 is a bolt-on breaker with a factory-installed alarm switch. They mount differently and have different features, so they are not interchangeable.
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