FB3125 - 125Amp Circuit Breaker
- 125 Amp
- 14k @ 480VAC; 25k @ 240VAC
- 3 Pole
Purchase Options: Refurbished
FB3125 - 125Amp Circuit Breaker Description
FB3125 - 125Amp Circuit Breaker
When your breaker fails, the priority is usually getting the equipment back online with a replacement that matches the original installation. The FB3125 is a 125 Amp, 3-pole FB thermal-magnetic circuit breaker intended for use in compatible legacy electrical systems where maintaining the original design matters. Its physical dimensions, electrical ratings, and fixed trip characteristics make it a practical choice for repairs, scheduled maintenance, and replacement projects.
Inside the breaker, two different trip mechanisms work together to protect the circuit. The thermal element reacts when a circuit carries too much current for too long, while the magnetic trip responds almost instantly during a short circuit or other high-current fault.
Key Features and Benefits
- Form, fit, and functional replacement for compatible FB electrical systems
- 125 Amp, 3-pole thermal-magnetic circuit breaker
- Thermal protection helps prevent damage from sustained overloads
- Magnetic trip responds quickly during short-circuit conditions
- Non-interchangeable trip unit with factory-set trip characteristics
- Rated for operation in ambient temperatures up to 40°C
- Includes load terminals
- Built to last for continued service in compatible legacy electrical equipment
Technical Specifications
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Part Number: FB3125
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Type: FB
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Circuit Breaker Type: Thermal-Magnetic
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Amperage: 125 Amps
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Poles: 3
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Interrupting Rating: 14kA @ 480VAC; 25kA @ 240VAC
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Trip Unit: Non-Interchangeable
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Ambient Rating: 40°C
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Load Terminals: Included
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Dimensions:
- Height: 6.00"
- Width: 4.13"
- Depth: 3.38"
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Dimensions: 4.13"W × 6.00"H × 3.38"D
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Approximate Shipping Weight: 5.50 lbs.
Material Compliance and Certifications
No material compliance or certification information has been provided for the FB3125. Before installation, verify that the breaker's ratings and configuration match the equipment being serviced. Installation should be completed by a qualified electrician in accordance with the National Electrical Code (NEC), applicable local electrical codes, and the original equipment manufacturer's recommendations.
Where It Works Best
The FB3125 is commonly used in commercial, industrial, and institutional facilities that continue to operate compatible FB electrical distribution equipment. It is well suited for protecting three-phase feeders, HVAC systems, pumps, compressors, motor loads, and general power distribution circuits where maintaining compatibility with existing equipment is the goal.
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.
Eaton®, Cutler-Hammer®, Westinghouse®, Challenger®, Bussmann®, Edison®, Edison Fuse®, GTE Sylvania®, Crouse-Hinds®, and Cooper® are registered trademarks of Eaton Corporation plc. Products sold are surplus, used, or refurbished and are NOT supplied by Eaton Corporation plc or its affiliates.
Specifications
- Width:4.13
- Height:6.0
- Depth:3.38
- Poles:3
- Amperes:125
- A.I.C. Rating & Volts:14k @ 480VAC; 25k @ 240VAC
- Type:FB
- Approx Dimensions:4.13"W x 6.00"H x 3.38"D
- Additional Notes:Thermal-magnetic circuit breaker with non-interchangeable trip unit. 40°C rated. This item includes load terminals.
Returns are easy
You may return unused items within 30 days of delivery for a full refund.
FREE ground shipping on breaker orders over $100 and all other items with orders over $500.
Shipping charges are Prepaid and Allowed on UPS Ground orders for all other products on orders over $500.00, again only when shipping within the lower 48 continental United States, provided the product(s) can safely ship UPS Ground.
If the product cannot safely ship via UPS Ground, or is too heavy to ship UPS Ground, then the product will be shipped via freightliner at buyer's expense.
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).