Free Shipping Over $99
Free Shipping Over $99
Free Shipping Over $99
Free Shipping Over $99
Siemens QJ23B090L Molded Case Circuit Breaker
- 90A
- 3 Pole
- Unit Mount
Siemens
QJ23B090L
Molded Case Circuit Breaker
Brand
Siemens
SKU
QJ23B090L
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Siemens QJ23B090L - 90A 3 Pole Molded Case Circuit Breaker
New
Quantity
Similar Items
100A 3 Pole Molded Case Circuit Breaker
100A 3 Pole Molded Case Circuit Breaker
80A 3 Pole Molded Case Circuit Breaker
Description
Engineered for commercial applications, the Siemens QJ23B090L is a 3-pole, 90A MCCB from the QJ frame family. It delivers reliable protection using a fixed thermal-magnetic trip mechanism. This unit mount breaker includes line and load side lugs for installation in individual enclosures and meter centers. The legacy QJ series is replaced by the newer QR23B090L. Rated for 10kAIC at 240VAC, it is HACR rated and supports reverse feed wiring.Specifications
| Brand | Siemens |
|---|---|
| Part Number | QJ23B090L |
| Series | QJ |
| Amperage | 90A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Frame Type | QJ |
|---|---|
| Terminal Type | Lugs |
| For Use With | Enclosures, Meter Centers, Individual Mounting |
| Wire Gauge | 6 AWG - 300 kcmil (Cu), 4 AWG - 300 kcmil (Al) |
| Max Wire | 300 kcmil |
| Min Wire | 6 AWG (Cu), 4 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Lug Kits, Padlock Attachment, Rotary Handle |
|---|---|
| Accessories | Line and Load Side Lugs |
| Standards | CSA C22.2 No. 5, HACR Rated, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Non-Interchangeable Trip |
Product FAQs
5 answersWhat is the difference between the Siemens QJ23B090 and the QJ23B090L?
The L suffix in the QJ23B090L catalog number indicates that the breaker comes factory-equipped with line and load side lugs. The standard QJ23B090 typically requires lugs to be sourced separately depending on the specific panelboard or switchboard application.
What is the modern replacement for the legacy QJ23B090L circuit breaker?
The legacy Siemens QJ frame series has been superseded by the newer QR frame series. The direct replacement for this 90A breaker is the QR23B090L. Be aware that installing a QR frame breaker in older panels may require a specific retrofit mounting kit.
Can the QJ23B090L be reverse fed?
Yes, this breaker supports reverse feed wiring. Because it utilizes a fixed thermal magnetic trip mechanism and does not have dedicated line and load terminal markings, it is suitable for backfeeding in field applications.
Is the QJ23B090L suitable for use with HVAC equipment?
Yes, this breaker is HACR rated, meaning it is tested and approved for use with heating, air conditioning, and refrigeration motor loads.
What type of enclosures accept the QJ23B090L breaker?
This unit mount breaker features a feed-thru connection type designed for installation in Siemens individual enclosures, meter centers, and custom control panels that accommodate the QJ frame footprint.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
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.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
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.
Search
Rating
10 reviews
- WMWilliam M.Verified BuyerReviewingSiemens QJ23B125 - 125A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/11/26Breaker
Perfect
- TNTimothy N.Verified BuyerReviewingSiemens QJ23B200 - 200A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/27/2610% off
Arrived on time, worked when turned on
- WKWillie K.Verified BuyerReviewingSiemens QJ23B150 - 150A 3 Pole Molded Case Circuit BreakerI recommend this productRated 4 out of 5 stars7/22/26Breaker
The Breaker arrive fast and in good condition however when I looked at the specs it was not the correct one.
- PGPhil G.Verified BuyerReviewingSiemens QJ23B200 - 200A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars3/3/26Great 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.
- VCVladimir C.Verified BuyerReviewingSiemens QJ22B200 - 200A 2 Pole Molded Case Circuit BreakerI recommend this productRated 4 out of 5 stars12/10/254 start
The breaker was it perfect match.,but it was missing the two top bolts.