Engineered for commercial power systems, the Siemens QJ22B110H provides reliable overcurrent protection. This 110A, 2-pole molded case circuit breaker features a rugged QJ frame design for demanding environments. It installs into Siemens panelboards and distribution switchboards using a standard bolt-on connection. The load-side lugs accept copper or aluminum wire for flexible integration.
HACR Rated, Reverse Feed, Non-Interchangeable Trip, Trip-Free Mechanism, Common Trip, High Interrupting Capacity
Product FAQs
6 answers
Which panelboards are compatible with the Siemens QJ22B110H circuit breaker?
This bolt-on molded case circuit breaker is designed for installation in Siemens P1, P2, and P3 panelboards, as well as compatible Siemens switchboards and enclosures.
Has the Siemens QJ frame series been replaced?
Yes, Siemens has transitioned from the legacy QJ frame to the newer QR frame series. When replacing a QJ22B110H with a modern QR equivalent, a specific mounting kit may be required for installation in older panelboards.
What wire sizes are accepted by the load-side lugs on the QJ22B110H?
The standard lugs accommodate copper conductors from 6 AWG up to 300 kcmil, and aluminum conductors from 4 AWG up to 300 kcmil.
What does the 42kAIC rating indicate for this specific breaker?
The 42kAIC rating means the breaker can safely interrupt up to 42,000 amps of fault current at 240VAC. This high interrupting capacity makes it suitable for commercial and industrial systems with higher available fault currents.
How does the thermal-magnetic trip unit function on this breaker?
The fixed thermal-magnetic trip unit utilizes Long-Time and Instantaneous (LI) functions. The thermal component responds to prolonged overloads, while the magnetic component provides immediate tripping during severe short circuits.
Is it safe to install the QJ22B110H in a non-Siemens panelboard?
No. Siemens circuit breakers are engineered and UL-listed specifically for Siemens equipment. Installing this breaker in a panel from another manufacturer can create improper connections, void the UL listing, and introduce severe fire hazards.
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Shipping
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Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
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All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.
Reviews
Review summary
Customers rate this product 4.8 out of 5 based on 10 reviews.
Siemens QJ23B125 - 125A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
9/11/26
Breaker
Perfect
TN
Timothy N.
Verified Buyer
Reviewing
Siemens QJ23B200 - 200A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
7/27/26
10% off
Arrived on time, worked when turned on
WK
Willie K.
Verified Buyer
Reviewing
Siemens QJ23B150 - 150A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 4 out of 5 stars
7/22/26
Breaker
The Breaker arrive fast and in good condition however when I looked at the specs it was not the correct one.
PG
Phil G.
Verified Buyer
Reviewing
Siemens QJ23B200 - 200A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
3/3/26
Great Service
I was in a bind for this breaker that was for an elevator, and Nick got me all the components even though their blizzard! Will use them for all my specialty breakers.
VC
Vladimir C.
Verified Buyer
Reviewing
Siemens QJ22B200 - 200A 2 Pole Molded Case Circuit Breaker
I recommend this product
Rated 4 out of 5 stars
12/10/25
4 start
The breaker was it perfect match.,but it was missing the two top bolts.