NB90 - 90Amp Circuit Breaker
- 90 Amp
- 10k @ 120/240VAC
- 2 Pole
Purchase Options: New Aftermarket Replacement
NB90 - 90Amp Circuit Breaker Description
NB90 - 90Amp Circuit Breaker
The NB90 is a dependable 90 amp, 2-pole circuit breaker designed to work with 120/240V electrical systems. It’s a great replacement for older NB-style breakers and bolts right into place without a lot of hassle. This breaker uses a thermal magnetic trip, which means it can handle long-term load without issue but will trip fast when there’s a short or overload. It’s solid, straightforward, and built to do the job right. A lot of customers use this breaker in panel upgrades, subpanels, or when they’re replacing a breaker that’s aged out. If your setup calls for a 90A two-pole breaker with a bolt-on connection, this one fits the bill. It’s reliable, easy to work with, and designed to match the specs of the original NB frame.
Key Features and Benefits
- Direct Fit: Designed to replace older NB-style breakers without changes to your panel.
- Dual Protection: Helps prevent overheating from continuous load and reacts fast to sudden faults.
- Strong Interrupting Rating: Rated at 10,000 AIC at 120/240V to handle fault currents safely.
- Quick Install: Bolt-on design makes it easy to mount securely in the panel.
- Built to Last: Works well in demanding environments—residential, commercial, or light industrial.
Technical Specifications
- Model Number: NB90
- Amperage: 90 Amps
- Poles: 2
- Voltage: 120/240V AC
- Interrupting Capacity: 10kA
- Trip Type: Thermal Magnetic
- Mounting Style: Bolt-On
- Frame: NB
- Height: 4.25"
- Weight: Approx. 2 lbs
Safety & Material Standards
- Reliable Build: This breaker is made with quality components you can count on.
- Tested Performance: It meets key performance and safety expectations and has been tested to ensure consistent tripping and long-term durability.
- Straightforward Protection: You get reliable protection without overcomplicating things.
Where This Breaker Works Best
- The NB90 is a smart choice for subpanels, HVAC units, electric water heaters, and larger appliance loads that need solid overcurrent protection. It fits especially well in panels originally set up for NB-frame breakers, so it's a common pick when you're replacing or upgrading equipment in older systems.
Use of Original Equipment Manufacturer (OEM) trademarks, names, and logos is for informational and identification purposes only. This does not imply any affiliation, sponsorship, endorsement, or approval by the original equipment manufacturer. CIRCUIT BREAKER SUPERSTORE® is an independent reseller and is not an authorized distributor, affiliate, or representative of any manufacturer. Manufacturer warranties do not apply unless expressly stated. All trademarks and registered trademarks are the property of their respective owners.
Specifications
- Depth:2.31
- Height:4.25
- Width:2.0
- Poles:2
- Amperes:90
- A.I.C. Rating & Volts:10k @ 120/240VAC
- Type:NB
- Approx Dimensions:2.00"W x 4.25"L x 2.31"D
- Additional Notes:Bolt-on, Thermal Magnetic Circuit Breaker.*Note: For the *New* offering, as this item is no longer manufactured by FPE, in it's place, we are offering a New after-market replacement circuit breaker specially designed to replace and fit into the existing location of the NB90
Returns are easy
You may return unused items within 30 days of delivery for a full refund.
FREE shipping on breaker orders over $100 and all other items with orders over $500.
CIRCUIT BREAKER SUPERSTORE® offers one to five day delivery in the United States. The variation depends on the chosen shipping speed and the warehouse location for the product(s).
Same Day Shipping
We strive to ship out your items within one business day.
In rare circumstances, CIRCUIT BREAKER SUPERSTORE® may reserve up to 5 business days to complete shipment. Feel free to contact us if your order is time sensitive.
CIRCUIT BREAKER SUPERSTORE® provides a limited 1-year warranty on both new and reconditioned products. Rest assured, all products are authentic OEM (original equipment manufacturer).