High-performance, three-pole circuit breaker for industrial applications, providing robust protection against overcurrents and short circuits.
Product ModelA1N 125 TMF 125-1250 3p F F
Material Number1SDA066732R1
Product ID92760
Stock on Request
Last updated: 8/29/2026
Key Features
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Feature1. Robust Protection Against Overcurrents and Short Circuits The ABB A1N 125 TMF 125-1250 3P FF is engineered to handle currents ranging from 125 to 1250 amps, ensuring reliable operation under various load conditions. Its thermomagnetic release (TMF) mechanism provides quick and effective protection against overcurrents and short circuits, safeguarding your electrical equipment and circuits.
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Feature2. Industrial-Grade Design Designed for industrial applications, this circuit breaker is built to withstand harsh environments and demanding operational conditions. Its robust construction ensures long-lasting performance and reliability in high-stress settings.
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Feature3. Efficient Power Distribution With a main circuit rating of 125 A and an interruption rating of 25 kA, the ABB A1N 125 TMF 125-1250 3P FF ensures efficient power distribution. It is ideal for applications requiring reliable and efficient power management.
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Feature
Technical Specifications
Detailed engineering parameters based on manufacturer documentation
Specifications may be subject to change without notice
Parameter
Value
Parameter
Value
Environmental Information
1SDL000183R0001 9AKK108467A6707
Product Net Width
76.2 mm
Product Net Height
130 mm
Product Net Depth / Length
60 mm
Product Net Weight
0.796 kg
Product Main Type
SACE FORMULA
4. Compliance with International Standards The product meets international standards, including IEC certifications, ensuring compliance with global safety and performance regulations. This guarantees that the circuit breaker operates safely and effectively in diverse environments.
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Feature5. Versatile Application The ABB A1N 125 TMF 125-1250 3P FF is versatile and can be used in a variety of applications, including transformer, generator, and installation protection. Its front terminals and compact design make it easy to integrate into existing electrical systems, enhancing overall system efficiency and reliability.
Product Name
Moulded Case Circuit Breaker
Product Type
Automatic Circuit Breaker
Version
F
Electrical Durability
1500 cycle
Mechanical Durability
Nr. Operations 8500 cycle
Number of Poles
3P
Opening Time
CB with SOR 15 ms CB with UVR 15 ms
Power Loss
at Rated Operating Conditions per Pole 11 W
Rated Current (In)
Main Circuit 125 A
Rated Impulse Withstand Voltage (Uimp)
6 kV
Rated Insulation Voltage (Ui)
690 V
Rated Operational Voltage
550 V AC 250 V DC
Rated Service Short-Circuit Breaking Capacity (Ics)
(240 V AC) 50 kA (380 V AC) 18 kA (415 V AC) 7.5 kA (440 V AC) 6.25 kA (480 V AC) 4.5 kA (500 V AC) 2.5 kA (250 V DC) 2 Poles in Series 5 kA
