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Spec Sheet
Product Specs
- Amperage Rating:
- 20A
- Circuit Breaker Frame Type:
- Complete breaker
- Circuit Breaker Type:
- FDB
- Frame Size:
- F-frame
- Frequency Rating:
- 50/60 Hz
- Interrupt Rating:
- 18 kAIC at 240 Vac, 14 kAIC at 480 Vac
- Number Of Poles:
- Two-pole
- Series:
- Series C
- Terminals:
- Load side
- Trip Type:
- Fixed thermal, fixed magnetic
- Voltage Rating:
- 600 Vac, 250 Vdc
- Department:
- Electrical
- Product Length:
- 3.38 IN
- Product Height:
- 6 IN
- Product Weight:
- 3 LB
- Product Width:
- 2.75 IN
B-LINE FDB2020 – Frequently Asked Questions
1) Will the Eaton FDB2020 breaker work on a 480V three-phase panel?
Yes, within its interrupting limits. The FDB2020 is rated 600 Vac and 250 Vdc, and it interrupts 18 kAIC at 240 Vac and 14 kAIC at 480 Vac. On a 480 Vac system you need to confirm your available fault current is at or below 14 kA at that point in the distribution; if your panel's short circuit current is higher, you need a higher AIC F-frame breaker instead. Being a two-pole device, it lands on two phases, not three.
2) Is the FDB2020 a complete breaker or just a frame I have to add a trip unit to?
It ships as a complete molded case breaker, 20A two-pole, with a fixed thermal and fixed magnetic trip already built in. There's no separate rating plug or interchangeable trip unit to order and no way to field-adjust the trip settings. If you need adjustable magnetic trip or an electronic trip unit, an FDB is the wrong choice.
3) Will an FDB2020 fit the same space as the F-frame breaker I'm replacing?
It's an Eaton Series C F-frame, and the case measures 6 x 3.38 x 2.75 inches at 3 lb. F-frame footprints are common across the Series C FD family, so an existing F-frame mounting position and panel cutout is generally where this goes. Check your panel's breaker pocket against those three numbers before you pull the old one.
4) Does the FDB2020 come with line and load lugs, or do I have to order terminals separately?
Load side terminals are what's specified on the FDB2020. If your installation needs line side lugs, a different terminal kit, or compression connectors, those are separate line items. Worth settling before the electrician is standing at the panel with the breaker in hand.
5) Is the FDB2020 usable on a DC circuit?
Yes, it carries a 250 Vdc rating alongside 600 Vac, so it can be applied on DC systems up to 250 volts. For AC work it's rated 50/60 Hz, which covers both North American 60 Hz and 50 Hz systems.
6) Is FDB2020 the same breaker as an Eaton FD2020?
They are different catalogue numbers in the Series C F-frame family. FDB is the breaker type on the FDB2020, and that designation carries its own interrupting rating: 18 kAIC at 240 Vac and 14 kAIC at 480 Vac. If your panel schedule or drawing calls for a specific FD-series suffix, order that exact number rather than substituting on amperage alone, since the AIC rating is what changes between them.
7) What's the exact part number to put on my purchase order for this 20A two-pole Eaton breaker?
FDB2020. That's the manufacturer part number for the 20A two-pole Series C F-frame complete molded case breaker, and it's the number to quote for a distributor order or a standardized panel spec across a facility.
How fast can I get the B-LINE FDB2020 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the B-LINE FDB2020 come with a warranty?
Absolutely. The B-LINE FDB2020 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the B-LINE FDB2020?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
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