A2D125R - 125 Amp Fuse Description
A2D125R - 125 Amp Fuse
The Mersen A2D125R is designed for your electrical systems that need dependable protection without constant nuisance fuse openings. Rated at 125 amps, this Class RK1 time-delay fuse helps you protect motors, feeders, and branch circuits from damaging short circuits and overloads while still allowing normal startup current to pass through. That makes it a solid fit for equipment that cycles on and off throughout the day, especially in commercial and industrial settings.
A helpful detail on this fuse is the built-in SmartSpot® indicator, which gives maintenance crews a quick visual sign when the fuse has opened. During troubleshooting, that can save valuable time and make it easier to get systems back online.
Key Features and Benefits
- 125A Class RK1 time-delay fuse: Designed for dependable overcurrent protection.
- Reduced nuisance openings: Helps prevent unnecessary fuse openings during motor startup.
- Fast short-circuit protection: Helps protect connected equipment from fault conditions.
- SmartSpot® indication: Built-in blown fuse indicator supports faster troubleshooting.
- 250VAC and 250VDC rating: Suitable for AC and DC applications.
- 200kA interrupting capacity: Designed for demanding fault-current protection.
- Fuse replacement compatibility: Suitable replacement for older Class H, K, and RK5 fuses.
- Tin-plated copper blade terminals: Provide reliable electrical connections.
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Commercial and industrial design: Built for commercial and industrial electrical systems.
Technical Specifications
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Manufacturer: Mersen
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Catalog Number: A2D125R
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Series: Amp-Trap 2000® A2D-R
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Fuse Class: RK1
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Amp Rating: 125A
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Voltage Rating: 250VAC / 250VDC
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Frequency: 50/60 Hz
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Fuse Type: Time Delay
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Interrupting Rating: 200kA AC
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Mounting Type: Clip
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Terminal Type: Blade
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Terminal Material: Tin-Plated Copper
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Body Material: PolyTube
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Indication Type: SmartSpot®
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Dimensions:
- Length: 181.1 mm
- Diameter: 39.6 mm
- Weight: 0.3411 kg
Material Compliance and Certifications
- The A2D125R is part of Mersen’s low-voltage UL/CSA fuse line and is built for applications requiring dependable overcurrent protection and current-limiting performance in demanding electrical environments.
Where It Works Best
- This fuse is commonly installed in:
- Motor control centers
- HVAC equipment
- Industrial machinery
- Commercial power distribution systems
- Manufacturing facilities
- Branch circuits and feeders
- Switchgear and control panels
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Specifications
- Width:1.54
- Depth:1.54
- Height:7.13
- Amperes:125
- A.I.C. Rating & Volts:200 kA @ 250 V.AC
- Type:A2D-R
- Additional Notes:Knife-Blade Style, Non-Indicating, Time-Delay, current-limiting Class R Fuse
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