Engineered for commercial distribution, the Siemens QJH23B100 delivers reliable thermal-magnetic protection in a 3-pole, 100A molded case package. This bolt-on MCCB installs into Siemens P1 through P5 panelboards and switchboards. As a legacy QJ frame device, it is often replaced by the newer QRH23B100, which requires a QR strap kit for retrofitting into existing enclosures. It features a 22kAIC interrupting rating at 240VAC, non-interchangeable trip, and a trip-free mechanism.
What types of enclosures or panels is the Siemens QJH23B100 compatible with?
This bolt-on molded case circuit breaker is designed for installation in Siemens P1, P2, P3, P4, and P5 panelboards, as well as compatible switchboards and meter centers.
What wire sizes and materials are accepted by the lugs on this breaker?
The included lugs accept copper wire ranging from 6 AWG to 300 kcmil, and aluminum wire ranging from 4 AWG to 300 kcmil.
Is the QJH23B100 a current or legacy frame?
The QJH23B100 is a legacy QJ frame device. It is often replaced by the newer QRH23B100, though retrofitting the newer QR frame into existing enclosures may require a specific QR strap kit.
What does the 'H' in the QJH series designation indicate?
The 'H' indicates a higher interrupting rating. While the standard QJ23B100 breaker has a 10kAIC rating, the QJH23B100 features an upgraded 22kAIC rating at 240VAC.
Are the trip settings on the QJH23B100 adjustable?
No, this breaker features a fixed thermal and fixed magnetic trip unit, meaning the long-time and instantaneous trip functions cannot be adjusted in the field.
Does this breaker include ground fault or equipment protection?
No, the QJH23B100 is a standard thermal-magnetic breaker with long-time and instantaneous trip functions. It does not provide ground fault or equipment protection features.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 4 reviews.
Siemens QJH23B060 - 60A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
7/14/26
Siemens Breaker
Breaker was a new surplus as described. Fast shipping & handling
BL
Bob L.
Verified Buyer
Reviewing
Siemens QJH23B100 - 100A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
6/15/26
Exactly what I needed / Great service
Excellent experience purchasing the Siemens QJH23B100. The breaker was well-packaged, priced competitively, and arrived right on schedule. It's already installed and operating perfectly. Five stars for both the product and SuperBreakers.
WE
Warren E.
Reviewing
Siemens QJH23B225 - 225A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
2/17/20
Great stock along with Great
Great stock along with Great customer service.
ED
Eddie D.
Reviewing
Siemens QJH23B060 - 60A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
11/27/17
Fast delivery
Great service fast delivery and received exact item for a great price.