Built for motor circuit protection, the Eaton HMCP050K2CA06 uses a magnetic-only trip mechanism that responds to short circuits. It has a rated current of 50A and rated voltages of 600VAC and 250VDC for 3-phase circuits. This Series C motor circuit protector mounts on a panel. Its trip function is instantaneous only, and the device measures 4.13 in wide.
How does the Eaton HMCP050K2CA06 protect a motor circuit?
This motor circuit protector uses instantaneous, magnetic-only tripping to respond to short-circuit current. Use it in a motor protection scheme that includes separate overload protection, since magnetic-only tripping does not provide thermal overload protection.
How should I use the 50A current rating when selecting this motor circuit protector?
Use the 50A rated current when selecting the protector for the motor circuit design. Treat rated current and instantaneous magnetic tripping as separate characteristics, not as a 50A overload trip setting.
What voltage ratings should I check before choosing this protector?
The voltage ratings are 600VAC and 250VDC. Compare the circuit voltage with the applicable AC or DC rating rather than applying the AC rating to a DC circuit.
How do I evaluate the 65kAIC interrupting rating for an installation?
For a 480V application, compare the available fault current at the installation point with the 65kAIC interrupting rating. The interrupting rating must be adequate for that available fault current.
Is this a three-pole protector for a three-phase motor circuit?
Yes. Its three-pole, three-phase configuration gives each phase conductor a pole through the protector. Use that configuration when planning the motor circuit's power connections.
How are the incoming and outgoing conductors connected?
Both the line and load sides use lug terminals. Plan incoming power connections at the line-side lugs and outgoing motor-circuit connections at the load-side lugs.
What dimensions should I use when planning installation space?
Use the 4.13 in width and 3.38 in depth when laying out installation space. Also allow room for conductor routing and access to the line- and load-side lugs.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 23 reviews.
Eaton / Cutler-Hammer HMCP030H1C - 30A 3 Pole Motor Circuit Protector
I recommend this product
Rated 5 out of 5 stars
9/15/26
Perfect fit
Customer up and running
JG
Jay G.
Verified Buyer
Reviewing
Eaton / Cutler-Hammer HMCP050K2 - 50A 3 Pole Motor Circuit Protector
I recommend this product
Rated 5 out of 5 stars
9/15/26
Eaton circuit breaker
This replaced an old Cutler Hammer and it was a perfect fit
JW
Joe W.
Verified Buyer
Reviewing
Eaton / Cutler-Hammer HMCP100R3 - 100A 3 Pole Motor Circuit Protector
I recommend this product
Rated 5 out of 5 stars
8/28/26
Best price around.
Bought as a direct replacement.
Item was very well packed to prevent damage during transit.
It is working as it should.
RM
Ryan M.
Verified Buyer
Reviewing
Eaton / Cutler-Hammer HMCP015E0C - 15A 3 Pole Motor Circuit Protector
I recommend this product
Rated 5 out of 5 stars
7/1/26
Great price and prompt delivery
Very satisfied, will be a return customer.
CH
curtis h.
Verified Buyer
Reviewing
Eaton / Cutler-Hammer HMCP150T4C - 150A 3 Pole Motor Circuit Protector
I recommend this product
Rated 5 out of 5 stars
5/1/26
150AMP CUTLER HAMMER/ EATON BREAKER
Brand new in the box. They go the extra mile in shipping and packaging to made sure we receive in the best condition. Great price and James takes great care of us.