NEF421090 - 90Amp Circuit Breaker
- 90 Amp
- 14k @ 480VAC; 18k @ 240VAC
- 2 Pole
Purchase Options: Refurbished
NEF421090 - 90Amp Circuit Breaker Description
NEF421090 - 90Amp Circuit Breaker
The NEF421090 90 Amp 2 Pole molded case circuit breaker is built for reliable overcurrent protection in commercial and industrial electrical panels. Rated at 90 amps, this thermal magnetic breaker is designed to help protect circuits from overloads and short circuits that can damage equipment or wiring. It’s commonly used as a replacement breaker in existing NEF frame panelboards, making it a practical solution for maintenance teams and electricians who need the correct fit without modifying the panel. The bolt-on mounting style provides a secure connection to the bus, helping ensure consistent contact and stable operation over time.
Key Features and Benefits
- 90 Amp Rating: Designed for branch circuit protection in 240V and 480V systems.
- 2 Pole Configuration: Suitable for applications requiring two-pole protection.
- Thermal Magnetic Trip: Thermal element responds to overloads; magnetic element reacts quickly to short circuits.
- Interrupting Capacity: 14kA at 480VAC and 18kA at 240VAC.
- Bolt-On Mounting: Secures directly to the panelboard bus for a firm installation.
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Molded Case Design: Intended for long-term use in commercial and light industrial environments.
Technical Specifications
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Part Number: NEF421090
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Amperage: 90A
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Poles: 2
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Voltage: Up to 480VAC
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Interrupting Rating:
- 14kA @ 480VAC
- 18kA @ 240VAC
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Trip Type: Thermal Magnetic
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Frame Type: NEF
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Mounting Style: Bolt-On
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Dimensions:
- 2.75 in. W
- 6.19 in. L
- 3.38 in. D
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Weight: 4.5 lbs
Material Compliance and Certifications
- Industry Standards: The NEF421090 is manufactured to meet applicable industry standards for molded case circuit breakers used in low-voltage distribution systems.
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Code Compliance: When installed in properly rated equipment, it supports compliance with current electrical codes and safety requirements.
Where It Works Best
- This 90 amp 2 pole breaker is best suited for replacement or maintenance in existing NEF frame panelboards found in commercial buildings, retail spaces, warehouses, and industrial facilities. It’s a straightforward choice when restoring protection to a panel without changing the original setup. If you need a compatible 90A bolt-on circuit breaker that installs correctly and performs as expected, the NEF421090 fits the job.
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
- Width:2.75
- Height:6.19
- Depth:3.38
- Poles:2
- Amperes:90
- A.I.C. Rating & Volts:14k @ 480VAC; 18k @ 240VAC
- Type:NEF
- Approx Dimensions:2.75"W x 6.19"L x 3.38"D
- Additional Notes:Bolt-On, Thermal Magnetic, Molded Case Circuit Breaker. Also known as NEF423090, NEF425090, & NEF427090.
Returns are easy
You may return unused items within 30 days of delivery for a full refund.
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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).