Square D QJP22100TM molded case circuit breaker is rated 100A and 240VAC, with 2 poles and a 100kA interrupting rating at 240VAC. This PowerPacT Q-Frame breaker has an 80% continuous load rating, a 50/60Hz rated frequency and unit mounting. Its thermal magnetic trip has fixed thermal and magnetic settings, with magnetic hold at 1200A and magnetic trip at 2400A. Approvals include UL, CSA and NOM.
What electrical system ratings should I check before selecting the Square D QJP22100TM?
This 2-pole breaker is rated 100A at 240VAC for single-phase, 50/60Hz service. Use these ratings when checking the circuit voltage, frequency and current requirements.
How does the 80% continuous load rating affect circuit sizing?
Apply the 80% continuous load rating to the breaker's 100A rated current when sizing for continuous loads. The continuous load rating governs how much sustained load the breaker can carry.
How do I check whether the interrupting rating is adequate?
The interrupting rating is 100kA at 240VAC. Compare that rating with the available fault current at the installation point, which must not exceed the breaker's interrupting rating.
Can I adjust the thermal or magnetic trip settings?
Both the thermal and magnetic trip settings are fixed. The thermal-magnetic mechanism provides delayed overload protection and instantaneous short-circuit protection; use the 1200A magnetic hold and 2400A magnetic trip settings when reviewing protection coordination.
What conductor sizes can I terminate on this breaker?
The conductor range is 4 AWG through 300 kcmil. Select a conductor within that termination range while sizing it for the circuit load and installation requirements.
What terminal arrangement and tightening torque should I plan for?
The line side uses a terminal nut connection, and the load side uses a lug. Plan the terminations around that arrangement and use the 247.8 lb-in terminal torque to secure the connections.
What mounting style and dimensions should I use for installation layout?
This is a unit-mount breaker measuring 6.47 in high, 3.00 in wide and 3.93 in deep. Use those dimensions and the mounting style when planning equipment layout and installation space.
What operating temperature range should I consider for the installation?
The operating temperature range is 40 to 70 °C. Evaluate the installation environment against that range when selecting the breaker for service.
Which approvals can I use when reviewing project requirements?
The breaker carries UL, CSA and NOM approvals, with NOM-003-SCFI-2000 as its standard. Use these approvals when checking the project's certification requirements.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 49 reviews.
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Rated 5.0 out of 5 stars
Based on 49 reviews
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Reviews Summary
Generated by AI from 91 most recent customer reviews
Last updated 8/1/25
Customers say these circuit breakers arrive quickly and match their specifications perfectly. Many reviews mention success finding hard-to-locate specialty breakers through this supplier. Common feedback includes praise for the accurate product descriptions, reliable shipping, and competitive pricing. While some note occasional stock limitations, users consistently report the breakers fit and function as intended.
Siemens Q33000S01 - 30A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
11/14/26
Fit and fine
These breakers are newly required here in Los Angeles County and they fit right in. Due to the forth space I had to be careful with phasing and moving singles but it all went great.
DT
Dawn T.
Verified Buyer
Reviewing
Siemens Q2150B - 150A 2 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
10/8/26
Timely
This is exactly what I was looking for! Worked perfectly, arrived promptly, no hassles.
CG
Crocefissa G.
Verified Buyer
Reviewing
Siemens Q115 - 15A 1 Pole Miniature Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
9/18/26
Quick delivery and great price.
The circuit breakers are at a great cost.
JB
Jason B.
Verified Buyer
Reviewing
Siemens Q2150B - 150A 2 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
9/18/26
Great experience
The product was exactly what I needed and it arrived on time.
DQ
Don Q.
Verified Buyer
Reviewing
Siemens Q3100 - 100A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
9/14/26
Siemens breaker
Great customer experience, great prices and fast shipping... Definitely will be buying her again.