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Siemens B225 Molded Case Circuit Breaker
- 25A
- 2 Pole
- Bolt-On
Siemens
B225
Molded Case Circuit Breaker
Brand
Siemens
SKU
B225
Quantity
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Siemens B225 - 25A 2 Pole Molded Case Circuit Breaker
New
Quantity
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Siemens B225 - 25A 2 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | B225 |
| Series | BL |
| Amperage | 25A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | B |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3, P4, P5 Panelboards |
| Wire Gauge | 14-10 AWG (Cu), 12-10 AWG (Al) |
| Max Wire | 10 AWG |
| Min Wire | 14 AWG (Cu), 12 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment, Handle Tie |
|---|---|
| Accessories | None included |
| Standards | CSA C22.2 No. 5, UL 489, HACR Rated |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, HID Rated |
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Siemens B225 - 25A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | B225-R |
| Series | BL |
| Amperage | 25A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | B |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3, P4, P5 Panelboards |
| Wire Gauge | 14-10 AWG (Cu), 12-10 AWG (Al) |
| Max Wire | 10 AWG |
| Min Wire | 14 AWG (Cu), 12 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment, Handle Tie |
|---|---|
| Accessories | None included |
| Standards | CSA C22.2 No. 5, UL 489, HACR Rated |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, HID Rated |
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Description
Designed to handle standard commercial loads, the Siemens B225 is a 2-pole, 25A molded case circuit breaker. As part of the BL family, it provides essential thermal-magnetic protection for branch circuits in a variety of industrial and commercial environments. The breaker installs securely via a bolt-on connection, making it fully compatible with Siemens P1 through P5 panelboards.Specifications
| Brand | Siemens |
|---|---|
| Part Number | B225 |
| Series | BL |
| Amperage | 25A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | B |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3, P4, P5 Panelboards |
| Wire Gauge | 14-10 AWG (Cu), 12-10 AWG (Al) |
| Max Wire | 10 AWG |
| Min Wire | 14 AWG (Cu), 12 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment, Handle Tie |
|---|---|
| Accessories | None included |
| Standards | CSA C22.2 No. 5, UL 489, HACR Rated |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, HID Rated |
Product FAQs
8 answersCan I use the Siemens B225 in commercial panelboards made by other manufacturers like Eaton or GE?
No. The B225 is a Type BL bolt-on breaker specifically designed and UL-listed for Siemens P1, P2, P3, P4, and P5 panelboards. Using it in panels from other brands violates electrical codes and voids the UL listing.
Can I install this breaker in a residential Siemens plug-on load center?
No. The B225 features a bolt-on mounting design intended for commercial distribution panels. It will not fit in residential load centers that require Type QP plug-on breakers.
What is the difference between the Siemens B225, B225H, and B225HH?
These two-pole 25-amp breakers share the same physical dimensions and thermal-magnetic trip mechanisms but have different short-circuit interrupting ratings. The standard B225 is rated for 10kAIC. The B225H (Type BLH) is rated for 22kAIC, and the B225HH (Type HBL) provides 65kAIC protection.
Can the Siemens B225 replace an older ITE-branded breaker?
Yes. Siemens acquired ITE and maintains the Type BL frame specifications. The B225 serves as a direct, UL-listed replacement for legacy ITE 25-amp, two-pole Type BL bolt-on breakers.
What is the advantage of the bolt-on connection for this breaker?
The bolted connection secures the breaker directly to the panelboard bus bar. This provides a rigid, low-resistance mechanical and electrical joint that minimizes voltage drop and prevents arcing in high-demand commercial environments.
Is the Siemens B225 approved for HVAC equipment and motor loads?
Yes. Siemens Type BL breakers are HACR rated, meaning they are certified to safely handle the unique inrush currents and multi-phase motor starts typical of heating, air conditioning, and refrigeration equipment.
Does this breaker provide ground fault (GFCI) or arc fault (AFCI) protection?
No. The B225 provides standard thermal-magnetic overload and short-circuit protection only. It does not include GFCI or AFCI sensing circuitry.
How does the thermal-magnetic trip unit in this breaker operate?
The internal mechanism provides two levels of protection. A bimetallic thermal element offers a delayed response to gradual overloads, while an electromagnetic component provides an instantaneous trip to safely clear severe short circuits.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 35 reviews.
Total 5 star reviews: 34 Total 4 star reviews: 1 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
Reviews Summary
Generated by AI from 66 most recent customer reviews
Last updated 8/15/25
Customers say these circuit breakers meet their specifications and perform as expected. Many reviews highlight the quick delivery times and competitive pricing. Frequent comments address the reliable product quality and ease of installation. The ordering process receives praise for its simplicity, with users noting consistent product availability.
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Rating
35 reviews
- TSTom S.Verified BuyerReviewingSiemens B3100 3 Pole Circuit BreakerI recommend this productRated 5 out of 5 stars8/3/26Superbreakers is our go to!
Great prices, great service and quick delivery.
- MGMaggie G.Verified BuyerReviewingSiemens B250 - 50A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/24/26Great Service
Came in great condition and in an incredibly timely manner. Will continue superbreakers for all of my orders in the future!
- DBDonnie B.Verified BuyerReviewingSiemens B115 - 15A 1 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/11/26New Breaker
Awesome breaker & Superbreakers is a awesome company!
- BLBrian L.Verified BuyerReviewingSiemens B120 - 20A 1 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/4/26Brian
Works great
- JFJoseph F.Verified BuyerReviewingSiemens B120 - 20A 1 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars3/23/26Great value
It was a great value