The Federal Pacific NEF433020 is a 3 Pole thermal magnetic molded case circuit breaker with a current rating of 20 Amps and a voltage rating of 480V. It has an interrupting rating of 14kAIC at 480V. The NEF433020 has a bolt-on connection type and includes long time and instantaneous trip functions.
Which panelboards accept the NEF433020 circuit breaker?
This N-Frame breaker is specifically designed for use in legacy Federal Pacific NEF and CDP panelboards.
What wire gauge range is supported by the terminals on this breaker?
The standard lugs on the NEF433020 accommodate wire sizes from 14 AWG to 2 AWG.
What type of protection does the LI trip function provide on this breaker?
The thermal-magnetic trip unit delivers fixed long-time protection against overloads and instantaneous protection against short circuits.
Does this breaker require a mounting kit for installation?
No, the NEF433020 features a standard bolt-on connection that mounts directly to the bus of compatible Federal Pacific NEF and CDP panelboards.
Is the Federal Pacific NEF433020 still actively manufactured?
Federal Pacific is no longer in business, making the NEF series a legacy product line. This breaker serves as a direct replacement component for existing systems without requiring aftermarket adapters.
Are the trip settings on the NEF433020 adjustable?
No, this breaker is equipped with a fixed thermal-magnetic trip unit. The long-time and instantaneous trip points cannot be modified in the field.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 6 reviews.
Federal Pacific NEF431030 - 30A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
8/21/26
Fpe 3 pole 30 amp breaker.
I ordered the breaker on Thursday and it was at my house for Saturday morning. Breaker is in pristine condition. A real bail out. Thank you.
MR
Michael R.
Verified Buyer
Reviewing
Federal Pacific NEF431040 - 40A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
8/4/25
Warehouse Air Compressor
Worked like a charm.
Thank you.
DP
Diana P.
Reviewing
Federal Pacific NEF433020 3 Pole Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
3/3/21
Satisfied
Service was GREAT!!
DJ
David J.
Reviewing
Federal Pacific / American NEF431100 - 100A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
1/13/21
This worked out great.
This worked out great.
MW
Mark W.
Reviewing
Federal Pacific NEF421050 - 50A 2 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
11/17/19
Great service & pricing
Superbreakers did a great job for us. We called and asked if the breakers were actually in their possession. Withing 30 minutes they called us back (which is rare these days), and we got our breakers the next morning.