Free Shipping Over $99
Free Shipping Over $99
Free Shipping Over $99
Free Shipping Over $99
Siemens Q280H Molded Case Circuit Breaker
- 80A
- 2 Pole
- Plug-On
Siemens
Q280H
Molded Case Circuit Breaker
Brand
Siemens
SKU
Q280H
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Siemens Q280H - 80A 2 Pole Molded Case Circuit Breaker
New
Quantity
Similar Items
150A 2 Pole Molded Case Circuit Breaker
175A 2 Pole Molded Case Circuit Breaker
80A 3 Pole Molded Case Circuit Breaker
Description
Rated for 22kAIC at 120/240VAC, the Siemens Q280H is a two-pole molded case circuit breaker designed for residential and commercial applications. It features thermal-magnetic trip technology to deliver consistent protection against overloads and short circuits. This unit mounts into Siemens load centers and P1 panelboards via a simple plug-on connection. It serves as a replacement for the legacy MP280H, ensuring seamless integration. Built with a common trip mechanism, it is HACR rated.Specifications
| Brand | Siemens |
|---|---|
| Part Number | Q280H |
| Series | Q |
| Amperage | 80A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 22kA @ 120/240VAC |
| Frame Type | Q |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Load Centers, Siemens P1 Panelboards |
| Wire Gauge | 4-1/0 AWG (Cu), 2-1/0 AWG (Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment |
|---|---|
| Standards | UL 489, CSA C22.2 No. 5, HACR Rated |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Common Trip, High Interrupting Capacity |
Product FAQs
5 answersWhich panelboards are compatible with the Q280H breaker?
This plug-on breaker is designed for use in Siemens load centers and Siemens P1 panelboards that accept QP type breakers. It is not listed for use in GE, Square D, or Eaton panels.
What does the H in the Q280H part number signify?
The H indicates a high interrupting rating. While standard Q280 breakers are rated for 10kAIC, the Q280H is rated for 22kAIC at 120/240VAC, providing enhanced protection for systems with higher available fault currents.
Can the Q280H replace older ITE or Murray breakers?
Yes, Siemens QP breakers are the direct, UL listed replacements for legacy ITE EQ-P breakers. The Q280H also directly replaces the legacy Murray MP280KH breaker.
How much space does the Q280H require in a load center?
This 2-pole breaker occupies two standard 1-inch spaces in a compatible Siemens panel.
Is the Q280H HACR rated for HVAC applications?
Yes, this breaker is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment that requires an 80-amp overcurrent protection device.
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 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.
Search
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.