Built to handle severe fault currents, the Siemens QA120AFCHH is a 20A combination AFCI breaker designed for demanding electrical systems. The plug-on design includes a pigtail neutral wire and installs into Siemens EQ, PL, ES, and Ultimate panelboards. It provides thermal-magnetic protection alongside advanced arc-fault capabilities. The standout feature is its massive 65kAIC rating at 120VAC. It also includes Insta-Wire connectors and an LED trip indicator for easy troubleshooting.
Which Siemens panelboards accept the QA120AFCHH breaker?
It is compatible with Siemens EQ, PL, ES, and Ultimate load centers. It requires a standard 1-inch space and a neutral bar connection for the pigtail.
How is the neutral connected on the QA120AFCHH?
This model uses a pigtail neutral wire that must be routed and terminated directly to the neutral bus bar in the panel. It is not a plug-on neutral breaker.
What does the HH suffix indicate on this Siemens AFCI breaker?
The HH designates a high interrupting capacity of 65kAIC at 120VAC, making it suitable for electrical systems with high available fault current.
What type of arc fault protection does this combination AFCI provide?
As a combination AFCI, it detects and mitigates both parallel arcing faults, such as line-to-neutral or line-to-ground, and series arcing faults, like a broken wire or loose connection.
Does this breaker include diagnostic indicators for troubleshooting?
Yes, it features an LED trip indicator to help electricians quickly identify the cause of a fault after the breaker trips.
Does this breaker feature Insta-Wire connectors?
Yes, it includes Insta-Wire connectors. The terminal screws are shipped backed out and ready for immediate wire insertion to speed up installation.
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