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Siemens Q250 Miniature Circuit Breaker
- 50A
- 2 Pole
- Plug-On
Siemens
Q250
Miniature Circuit Breaker
Brand
Siemens
SKU
Q250
Quantity
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Siemens Q250 - 50A 2 Pole Miniature Circuit Breaker
New
Quantity
Quantity
Siemens Q250 - 50A 2 Pole Miniature Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | Q250 |
| Series | QP |
| Amperage | 50A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens Load Centers, Siemens Panelboards |
| Wire Gauge | 8-6 AWG (Cu), 8-4 AWG (Al) |
| Max Wire | 6 AWG (Cu), 4 AWG (Al) |
| Min Wire | 8 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment |
|---|---|
| Accessories | Q250-R |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Common Trip |
Sold out
Quantity
Siemens Q250 - 50A 2 Pole Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | Q250-R |
| Series | QP |
| Amperage | 50A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens Load Centers, Siemens Panelboards |
| Wire Gauge | 8-6 AWG (Cu), 8-4 AWG (Al) |
| Max Wire | 6 AWG (Cu), 4 AWG (Al) |
| Min Wire | 8 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment |
|---|---|
| Accessories | Q250-R |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Common Trip |
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Description
Engineered to safeguard 240V circuits, this 50-amp miniature breaker delivers robust thermal-magnetic protection for residential environments. The common trip mechanism ensures both poles disconnect simultaneously. Installation is straightforward as the unit plugs into standard Siemens load centers. Contractors frequently use this model to swap out discontinued MP250 breakers. Featuring an HACR rating, it easily supports heavy-duty air conditioning and refrigeration equipment.Specifications
| Brand | Siemens |
|---|---|
| Part Number | Q250 |
| Series | QP |
| Amperage | 50A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens Load Centers, Siemens Panelboards |
| Wire Gauge | 8-6 AWG (Cu), 8-4 AWG (Al) |
| Max Wire | 6 AWG (Cu), 4 AWG (Al) |
| Min Wire | 8 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment |
|---|---|
| Accessories | Q250-R |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Common Trip |
Product FAQs
6 answersWhich panelboard series are compatible with the Siemens Q250?
This breaker is compatible with Siemens EQ, ES, PL, and legacy Ultimate series load centers that accept plug-on Type QP breakers.
Can I use this Siemens breaker to replace discontinued Murray or ITE breakers?
Yes. Siemens Type QP breakers are the official UL listed direct replacements for older ITE EQ-P breakers and Murray Type MP-T breakers, including the Murray MP250.
How much space does the Q250 occupy in a load center?
As a 2-pole Type QP breaker, it requires two standard 1-inch spaces, taking up a total of 2 inches on the panel bus.
Is the Siemens Q250 rated for HVAC equipment?
Yes, it is HACR rated. This means it is tested and approved for use with heating, air conditioning, and refrigeration equipment branch circuits.
Can the Q250 be used in a back-fed main breaker application?
Yes, but only if it is secured to the panel bus with an approved hold-down kit, such as the Siemens ECMBR2, as required by the National Electrical Code (NEC) for back-fed plug-on breakers.
What are common branch circuit applications for a 50A 2-pole QP breaker?
Electricians frequently install the Q250 to protect 240V circuits for Level 2 EV chargers, electric ranges, and secondary subpanels.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 4 reviews.
Total 5 star reviews: 4 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
4 reviews
- TQTimothy Q.Verified BuyerRated 5 out of 5 stars3/21/26Great service
My breakers arrived quickly at a good price.
I would definitely use SuperBreakers again.
- JCJose C.Verified BuyerRated 5 out of 5 stars7/28/25Excellent
Simply great
- HKHeinz K.Rated 5 out of 5 stars3/20/23prompt delivery, items as listed
prompt delivery, items as listed
- MRMichael R.Rated 5 out of 5 stars7/18/20Master electrician in need
I needed these two pole breakers to finish a job this COVID mess shutdown factories and could not get local g
Superbreakers had what I needed at a good price and fast shipping thanks