The Square D KA362001021 is a 3-pole, 200A molded case circuit breaker built for industrial power distribution. As part of the legacy K-Frame series, it delivers reliable thermal-magnetic protection with adjustable magnetic trip settings. It features an I-Line plug-on connection for seamless installation into Square D I-Line panelboards. Rated 25 kAIC at 480VAC, this unit includes a factory-installed 120-240VAC shunt trip (1021 suffix) for remote tripping and a Visi-Trip indicator.
How does the KA36200-1021 install into a panelboard?
It utilizes an I-Line style plug-in connection, allowing it to snap directly onto the busbar of Square D I-Line panelboards and switchboards. This design eliminates the need for bolt-on hardware, speeding up installation and replacement.
What does the -1021 suffix mean on the KA36200-1021?
The -1021 suffix indicates that this circuit breaker includes a factory-installed 120/240VAC shunt trip. This accessory allows for remote tripping capabilities.
Is the KA36200-1021 a current production model?
The KA frame is a legacy molded case circuit breaker. While the K-Frame family has been succeeded by the newer PowerPact J-Frame series, the KA36200-1021 serves as an exact drop-in replacement for maintaining existing K-Frame I-Line installations.
Are the trip settings adjustable on the KA36200-1021?
Yes, it features a thermal-magnetic trip unit with a fixed thermal element for long-time overload protection and an adjustable magnetic element. The adjustable magnetic trip allows electricians to fine-tune the instantaneous short-circuit protection to match specific load requirements.
How does the shunt trip function on the KA36200-1021 improve safety?
The factory-installed 120/240VAC shunt trip allows the breaker to be tripped remotely. This is commonly used to disconnect power during emergencies, such as tying the breaker into a fire alarm panel or an emergency stop button system.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
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.
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 4.9 out of 5 based on 14 reviews.
Square D KA36150 - 150A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
7/27/26
Square D KA36150
As usual, on time and in great condition!
SJ
Shawn J.
Verified Buyer
Reviewing
Square D KA36225 - 225A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
4/27/26
I Line BreKER
Found exactly what I was looking for. They called and set over specs so I could confirm the fit!
RF
Ron F.
Verified Buyer
Reviewing
Square D KA36100 - 100A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
4/9/26
Multiple orders
I have purchased multiple breakers (of fairly large size) from SuperBreakers and their pricing has been excellent and the delivery time spot on. I would highly recommend them
MF
Matt F.
Verified Buyer
Reviewing
Square D KA36100 - 100A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
8/21/25
Order Messed Up - Breaker Great
I have ordered many breakers through SuperBreakers with no issues until this order. I ordered this breaker and it wasn't shipped. I sent a message and was told that a mistake was make in shipping and that they would next day air the breaker to me. 5 days later (weekend in there) the breaker arrived. Not next day air, but shit happens. Sent the breaker still in the box out with my electrician and received a call from him that the breaker that was sent was a KAL36100 not the KA36100. I reached out to SuperBreakers and was told the correct breaker would be next day aired that day and I was emailed a shipping label to send back the incorrect one. This time it arrived the next day and was installed. This error cost my customer a couple days with out power to a dimmer cabinet and about 2 extra hours of labor, but all was okay in the end. Mistakes happen. The help and quick responses to my emails I received from Mike David showed me enough about this company. I look forward to my next order. Thank you for working this situation out in timely manor.
JH
Joel H.
Verified Buyer
Reviewing
Square D KA36200 - 200A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
8/5/25
Worked As Planned
They had what we needed to match existing equipment, they shipped the same day and we put it right into service, no problems from first phone call to delivery and install.