FD63T125 - 125Amp Trip Unit
- 125 Amp
- 480VAC
- 3 Pole
Purchase Options: New In Box
FD63T125 - 125Amp Trip Unit Description
FD63T125 - 125Amp Trip Unit
When your electrical system needs reliable protection, choosing the right circuit breaker is an important decision. The FD63T125 Siemens circuit breaker is a 125 Amp, 3-pole molded case circuit breaker designed for commercial and industrial applications where dependable overcurrent protection is required. Built as part of the Siemens SENTRON FD frame family, this breaker helps protect electrical equipment, feeders, and distribution circuits from overloads and short-circuit conditions while delivering the trusted performance professionals expect from Siemens.
With a 22kAIC interrupting rating at 600V and 35kAIC at 480V, the Siemens FD63T125 is built for applications where reliable protection during fault conditions is essential. Its compact FD frame design allows it to fit into compatible electrical distribution equipment while providing the performance needed for demanding commercial and industrial environments.
Key Features and Benefits
- 125 Amp, 3-pole Siemens SENTRON molded case circuit breaker
- Designed for commercial and industrial electrical distribution systems
- Thermal magnetic trip technology protects against overloads and short circuits
- Rated for 600 VAC applications
- 22kAIC interrupting capacity at 600V
- 35kAIC interrupting capacity at 480V
- Includes line and load side lugs for easier installation
- Supports both copper and aluminum conductors
- Accepts 6 AWG–350 kcmil copper wire
- Accepts 4 AWG–350 kcmil aluminum wire
- Siemens FD frame design for compatible electrical equipment
Technical Specifications
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Catalog Number: FD63T125
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Manufacturer: Siemens
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Product Type: Molded Case Circuit Breaker (MCCB)
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Series: Siemens SENTRON FD Frame
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Frame Size: FD6
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Amperage Rating: 125 Amps
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Number of Poles: 3
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Voltage Rating: 600 VAC
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Interrupting Capacity:
- 22 kAIC at 600V
- 35 kAIC at 480V
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Trip Unit Type: Thermal Magnetic
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Temperature Rating: 40°C Standard
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Connection Type: Line and Load Side Lugs Included
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Lug Type: TA1FD350A
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Wire Range:
- Copper: 6 AWG–350 kcmil
- Aluminum: 4 AWG–350 kcmil
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Standards: UL 489 / IEC 60947-2
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Dimensions: 4.5 in W x 9.5 in H x 4 in D
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Weight: 1.301 lb
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UPC: 783643211940
Material Compliance and Certifications
The Siemens FD63T125 molded case circuit breaker is designed to meet recognized electrical safety and performance standards, including UL 489 and IEC 60947-2 requirements. These standards help verify that the breaker has been evaluated for applications requiring dependable overcurrent protection and safe electrical operation.
Where It Works Best
- Commercial electrical distribution systems
- Industrial facilities and manufacturing environments
- Three-phase 600V power applications
- Equipment feeder protection
- Electrical panels and distribution assemblies
- Siemens FD frame breaker replacement projects
- Applications requiring 125 amp circuit protection
- Systems using copper or aluminum conductors
- Electrical maintenance and upgrade projects
- New installations requiring a dependable molded case circuit breaker
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Siemens®, I-T-E®, and Murray® are registered trademarks of Siemens AG. Products sold are surplus, used, or refurbished and are NOT supplied by Siemens AG or its affiliates.
Specifications
- Poles:3
- Amperes:125
- A.I.C. Rating & Volts:480VAC
- Type:FD6-A
- Sub-Category:TRIP UNIT
- Accessories:FD63T070; FD63T080; FD63T090; FD63T100; FD63T125; FD63T150; FD63T175; FD63T200; FD63T225; TA1FD350A
Returns are easy
You may return unused items within 30 days of delivery for a full refund.
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