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Siemens BQ3B090H Molded Case Circuit Breaker
- 90A
- 3 Pole
- Bolt-On
Siemens
BQ3B090H
Molded Case Circuit Breaker
Brand
Siemens
SKU
BQ3B090H
Quantity
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Siemens BQ3B090H - 90A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Siemens BQ3B090H - 90A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | BQ3B090H |
| Series | BQ |
| Amperage | 90A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 22kA @ 240VAC |
| Frame Type | BQ |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1 Panelboards, ITE Panelboards |
| Wire Gauge | 6-1/0 AWG (Cu/Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 6 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs |
| Standards | CSA C22.2 No. 5, HACR Rated, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
Sold out
Quantity
Siemens BQ3B090H - 90A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | BQ3B090H-R |
| Series | BQ |
| Amperage | 90A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 22kA @ 240VAC |
| Frame Type | BQ |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1 Panelboards, ITE Panelboards |
| Wire Gauge | 6-1/0 AWG (Cu/Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 6 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs |
| Standards | CSA C22.2 No. 5, HACR Rated, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
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Description
Built for commercial and industrial environments, the Siemens BQ3B090H is a 90-amp, 3-pole molded case circuit breaker. It features thermal-magnetic trip technology for reliable overload and short-circuit protection. This bolt-on breaker mounts into Siemens P1 panelboards and is fully compatible with legacy ITE panels. It accepts 6-1/0 AWG wire via load side lugs. Rated at 22 kAIC at 240VAC, this high-interrupting capacity unit provides robust performance for demanding electrical systems.Specifications
| Brand | Siemens |
|---|---|
| Part Number | BQ3B090H |
| Series | BQ |
| Amperage | 90A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 22kA @ 240VAC |
| Frame Type | BQ |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1 Panelboards, ITE Panelboards |
| Wire Gauge | 6-1/0 AWG (Cu/Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 6 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs |
| Standards | CSA C22.2 No. 5, HACR Rated, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
Product FAQs
6 answersWhat is the difference between the Siemens BQ3B090 and the BQ3B090H?
The standard BQ3B090 has an interrupting rating of 10kAIC at 240VAC. The H in the BQ3B090H catalog number designates a high-interrupting capacity of 22kAIC, which is required for electrical systems with higher available fault currents.
Which panelboards accept the BQ3B090H circuit breaker?
This bolt-on breaker is designed for use in Siemens P1 panelboards. It is also backward compatible with legacy ITE panelboards that accept BQ frame breakers.
Can I use the BQ3B090H to replace an older ITE circuit breaker?
Yes. Siemens acquired ITE and continues to manufacture the BQ frame. The BQ3B090H serves as a direct replacement for older 90A, 3-pole ITE BQ-type bolt-on breakers that require a 22kAIC rating.
Is the BQ3B090H suitable for HVAC equipment?
Yes, this breaker is HACR rated, meaning it is tested and approved to handle the specific inrush currents and operational demands of heating, air conditioning, and refrigeration equipment.
Does the BQ3B090H come with lugs included?
Yes, the breaker includes factory-installed load-side lugs that accept 6 AWG to 1/0 AWG copper or aluminum wire. It utilizes a bolt-on connection for secure mounting to the panelboard bus.
Are the trip settings on the BQ3B090H adjustable?
No, this breaker features a fixed thermal-magnetic trip unit. The long-time (thermal) and instantaneous (magnetic) trip functions are factory-set for 90-amp protection and cannot be adjusted in the field.
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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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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 73 reviews.
Reviews Summary
Generated by AI from 67 most recent customer reviews
Last updated 6/3/26
Customers say these breakers arrive quickly and fit perfectly for their electrical needs. Fast shipping and competitive pricing are frequently mentioned, with many users appreciating the availability of hard-to-find and older-style breakers. The products are well-packaged and arrive in good condition. Most customers report successful installations and reliable performance. A few note missing items from orders or concerns about product condition, though the majority express satisfaction with their purchases and indicate they would order again.
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Rating
73 reviews
- HSHector S.Verified BuyerReviewingSiemens BQ3B100H - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/27/26Perfect replacement
Fit perfectly and good price
- AFAnthony F.Verified BuyerReviewingSiemens BQ2B020 - 20A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/25/26works as expected
works as expected
- MSMike S.Verified BuyerReviewingEaton / Cutler-Hammer BQ250250 - 50/50A Quadplex Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/12/26Electrical company
Breaker worked awesome thank you very much
- PEPhilip E.Verified BuyerReviewingSiemens BQ3B020 - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/10/26Siemens BQ3B020
The breaker arrived as described and on time. It works as expected. I will order from SuperBreakers again in the future without hesitation.
- PLPaul L.Verified BuyerReviewingSiemens BQ1B020 - 20A 1 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/23/26Breaker
Quick shipping. Exact fit.