Manufactured for heavy-duty commercial use, this 30A molded case circuit breaker offers robust thermal-magnetic trip functions. The bolt-on design fits perfectly into older Federal Pacific NEF panelboards, acting as a substitute for NEF433030 and NEF437030 units. With a 14kAIC rating at 480VAC, it includes non-interchangeable trip elements and supports reverse feed configurations for versatile industrial wiring.
Shunt Trip, Auxiliary Switch, Undervoltage Release, Bell Alarm
Accessories
Lugs
Standards
CSA C22.2 No. 5.1, NEMA AB 1, UL 489
Approval
CSA, UL
Temp Rating
40C
Construction Features
Non-Interchangeable Trip, Reverse Feed
Product FAQs
5 answers
What panelboards accept the NEF435030 circuit breaker?
This N-frame breaker is designed exclusively for use in legacy Federal Pacific NEF panelboards. It requires a bolt-on connection to the panel busbar.
What wire gauge range is supported by the terminal lugs on the NEF435030?
The integrated lugs accept wire sizes from 14 AWG up to 2 AWG. Ensure proper torque specifications are followed during installation to maintain a secure connection.
Does the NEF435030 support DC voltage applications?
Yes, in addition to its AC ratings, this thermal-magnetic breaker is rated for 250VDC applications with a maximum interrupting capacity of 10kA.
Are the trip settings adjustable on the NEF435030?
No, this breaker features a fixed thermal and fixed magnetic trip unit. The long-time and instantaneous (LI) protection parameters cannot be field-adjusted.
Can the NEF435030 be used as a plug-in breaker?
No, this is strictly a bolt-on circuit breaker. It must be mechanically bolted to the busbar of a compatible Federal Pacific panelboard.
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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.
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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 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.