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Siemens Q325 Miniature Circuit Breaker
- 25A
- 3 Pole
- Plug-On
Siemens
Q325
Miniature Circuit Breaker
Brand
Siemens
SKU
Q325
Quantity
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Siemens Q325 - 25A 3 Pole Miniature Circuit Breaker
New
Quantity
Quantity
Siemens Q325 - 25A 3 Pole Miniature Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | Q325 |
| Series | Q |
| Amperage | 25A |
| Poles | 3 |
| Mounting Style | Plug-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Frame Type | Q |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Load Centers, Siemens Panelboards |
| Wire Gauge | 10-8 AWG (Cu), 10-6 AWG (Al) |
| Max Wire | 6 AWG (Al), 8 AWG (Cu) |
| Min Wire | 10 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment |
|---|---|
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Insta-Wire, Common Trip |
Sold out
Quantity
Siemens Q325 - 25A 3 Pole Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | Q325-R |
| Series | Q |
| Amperage | 25A |
| Poles | 3 |
| Mounting Style | Plug-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Frame Type | Q |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Load Centers, Siemens Panelboards |
| Wire Gauge | 10-8 AWG (Cu), 10-6 AWG (Al) |
| Max Wire | 6 AWG (Al), 8 AWG (Cu) |
| Min Wire | 10 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment |
|---|---|
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Insta-Wire, Common Trip |
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Description
Manufactured for standard residential and light commercial use, this three-pole 25-amp Type QP device delivers reliable thermal-magnetic overcurrent protection. It serves as an exact, UL-listed substitute for discontinued Murray MP325 units, maintaining full code compliance. The unit mounts into Siemens load centers and features Insta-Wire connectors to reduce termination time. An HACR rating makes it suitable for dedicated heating, air conditioning, and refrigeration circuits.Specifications
| Brand | Siemens |
|---|---|
| Part Number | Q325 |
| Series | Q |
| Amperage | 25A |
| Poles | 3 |
| Mounting Style | Plug-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Frame Type | Q |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Load Centers, Siemens Panelboards |
| Wire Gauge | 10-8 AWG (Cu), 10-6 AWG (Al) |
| Max Wire | 6 AWG (Al), 8 AWG (Cu) |
| Min Wire | 10 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment |
|---|---|
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Insta-Wire, Common Trip |
Product FAQs
6 answersWhich load centers are compatible with the Siemens Q325?
The Q325 is a Type QP plug-in breaker designed for Siemens 3-phase load centers and panelboards. It is also commonly approved for use in legacy Murray, Gould, and Sylvania enclosures that accept standard 1-inch interchangeable plug-on breakers. Always check your panel interior label for UL-approved replacement types.
How much panel space is required to install the Q325?
This 3-pole breaker requires three standard 1-inch spaces, taking up a total of 3 inches on the bus bar of a compatible load center.
Is the Q325 breaker HACR rated for HVAC equipment?
Yes, Siemens Type QP breakers are HACR rated. The Q325 can be safely used for heating, air conditioning, and refrigeration applications that specify a 25A, 3-pole overcurrent protection device.
What wire sizes are approved for the Q325 terminals?
The lugs on this breaker are rated to accept 10 to 8 AWG copper (Cu) conductors or 10 to 6 AWG aluminum (Al) conductors.
Can this breaker be used in 3-phase commercial systems?
Yes, the 3-pole configuration and 240VAC rating make it suitable for 3-phase power distribution in light commercial, industrial, and residential applications requiring thermal-magnetic protection.
What is the difference between the Q325 and a bolt-on breaker?
The Q325 is a Type QP plug-in breaker, meaning it snaps directly onto the panel bus bar. It cannot be used in panels that require bolt-on connections, such as those using Siemens Type BQD or BL breakers.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 47 reviews.
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.
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Rating
47 reviews
- CGCrocefissa G.Verified BuyerReviewingSiemens Q115 - 15A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/18/26Quick delivery and great price.
The circuit breakers are at a great cost.
- JBJason B.Verified BuyerReviewingSiemens Q2150B - 150A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/18/26Great experience
The product was exactly what I needed and it arrived on time.
- DQDon Q.Verified BuyerReviewingSiemens Q3100 - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/14/26Siemens breaker
Great customer experience, great prices and fast shipping... Definitely will be buying her again.
- CSChristopher S.Verified BuyerRated 5 out of 5 stars8/12/26Siemens 60
Perfect new condition
- GSGeorge S.Verified BuyerReviewingSiemens Q2150B - 150A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars3/4/26Great service
Every time I call or go online you have the parts I'm looking for.