High-performance, three-pole circuit breaker with thermal magnetic trip, rated for 125A and 400V, ideal for industrial and commercial settings.
Product ModelA1N 125 TMF 40-400 3p F F
Material Number1SDA066725R1
Product ID71636
Stock on Request
Last updated: 8/29/2026
Key Features
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1. Comprehensive ProtectionThe ABB A1N 125 TMF 40-400 3p F F circuit breaker provides comprehensive three-pole protection, ensuring safety and reliability in industrial and commercial settings.
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2. Thermal Magnetic TripEquipped with a thermal magnetic trip unit, this circuit breaker offers reliable operation and quick response to overcurrent conditions, ensuring minimal downtime.
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3. High Current RatingRated for 125A, this circuit breaker is designed to handle high current loads, making it suitable for demanding industrial applications.
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4. Versatile Voltage RangeCompatible with both AC (550V) and DC (250V) voltages, this circuit breaker offers versatility in various electrical configurations.
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
0.794 kg
Product Main Type
SACE FORMULA
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5. Durable ConstructionBuilt with durable materials and designed for 1500 cycles, this circuit breaker ensures long-lasting performance and reliability in harsh industrial environments.
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 4.5 W
Rated Current (In)
Main Circuit 40 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
