Built to maintain existing commercial power systems, the Federal Pacific NEF433015 is a 15A, 3-pole molded case circuit breaker. It delivers essential long-time and instantaneous (LI) protection for industrial distribution networks. Designed for exact fitment, this breaker installs into legacy FPE NEF and CDP panelboards. It eliminates the need for complex retrofits or panel replacements. The N-Frame unit features an 18kAIC rating at 240VAC and is vibration tested for harsh environments.
Which panelboards are compatible with the NEF433015 circuit breaker?
This breaker is designed for direct installation into legacy Federal Pacific NEF and CDP series panelboards. It utilizes a bolt-on connection to secure the breaker to the panel bus.
What wire sizes do the factory lugs on the NEF433015 accept?
The included lugs are designed to accept wire gauges from 14 AWG up to 2 AWG. Ensure proper torque specifications are applied during installation to maintain a secure connection.
Can the NEF433015 be used in direct current (DC) applications?
Yes, in addition to its AC ratings, this thermal magnetic breaker is rated for up to 250VDC with an interrupting capacity of 10kA, making it suitable for specific industrial DC control circuits.
Is the NEF433015 part of the Federal Pacific Stab-Lok residential line?
No. The NEF433015 is an N frame commercial and industrial molded case circuit breaker. It is distinct from the residential Stab-Lok series and is built for heavy duty applications in NEF and CDP panelboards.
What type of trip unit is equipped on the NEF433015?
It features a fixed thermal magnetic trip unit with Long-Time and Instantaneous (LI) trip functions, providing standard overload and short circuit protection for commercial branch circuits.
Does installing the NEF433015 in a CDP panelboard require additional hardware?
Yes, mounting an NEF frame breaker into a Federal Pacific CDP panelboard typically requires a twin branch mounting hardware kit, such as the NEF1K or KCDP1C, to properly connect the breaker to the bus.
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Shipping
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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.
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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.