A drop-in replacement for older electrical systems, the Siemens QP1B020 is a 1-pole, 20A miniature circuit breaker. It is specifically designed to fit seamlessly into legacy ITE, Gould, Murray, and Siemens load centers without the need for mounting adapters. Rated for 10kAIC at 120/240V, this plug-on breaker features standard thermal-magnetic trip technology and is HACR and SWD rated for switching fluorescent lighting loads. It serves as an exact substitute for the modern Q120 and MP120 SKUs.
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When shopping with SuperBreakers, you’ll have peace of mind knowing that every single item you purchase includes a 60 day warranty, free of charge. Why such confidence? Because only the highest quality electrical parts have a place on our shelves, and we stand by every single one we sell.
If anything goes wrong with your item that is not a result of misuse or normal wear and tear, we’ll gladly replace it at no cost to you.
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.
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.
Siemens Q360 - 60A 3 Pole Miniature Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
4/7/26
Just as promised!
Thank you for delivering my breakers just as you promised!
Great service!
TQ
Timothy Q.
Verified Buyer
Reviewing
Siemens Q250 - 50A 2 Pole Miniature Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
3/21/26
Great service
My breakers arrived quickly at a good price.
I would definitely use SuperBreakers again.
JM
jesse m.
Verified Buyer
Reviewing
Siemens Q36000S01 - 60A 3 Pole Miniature Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
1/20/26
great experience
smooth experience ordering and delivery, thank you
JF
Jim F.
Verified Buyer
Reviewing
Siemens Q28000S01 - 80A 2 Pole Miniature Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
12/7/25
An OEM product delivered on time for the job.
Won't be chasing all over town to pay an inflated price again. Or spend hours at a counter waiting on the cheapest dummy they could hire to find a product he knows nothing about.
RL
Ricardo L.
Verified Buyer
Reviewing
Siemens Q360 - 60A 3 Pole Miniature Circuit Breaker