A1A 125 TMF 25-400 4p F F

Name: A1A 125 TMF 25-400 4p F F
Brand: ABB
SKU: A1A 125 TMF 25-400 4p F F

The A1A 125 TMF 25-400 4p F F is a fixed four-pole circuit breaker with front terminals and thermomagnetic release, offering robust protection and efficient operation in a wide range of electrical systems.

Product ModelA1A 125 TMF 25-400 4p F F

Material Number1SDA066526R1

Product ID71623

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. Reliable ProtectionThe A1A 125 TMF 25-400 4p F F features a thermomagnetic release mechanism, ensuring reliable short-circuit protection and safeguarding against electrical hazards.
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2. High PerformanceDesigned for demanding applications, this circuit breaker offers high breaking capacities, making it suitable for various electrical systems, including transformers and generators.
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3. Efficient OperationWith a low power loss of 3 watts per pole, the A1A 125 TMF 25-400 4p F F minimizes energy consumption, enhancing overall system efficiency.
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4. Versatile ConnectivityEquipped with front terminals, this circuit breaker provides easy and secure connections, facilitating quick installation and maintenance.

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

101.6 mm

Product Net Height

130 mm

Product Net Depth / Length

60 mm

Product Net Weight

1 kg

Product Main Type

SACE FORMULA

5. Compliance and CertificationsThe A1A 125 TMF 25-400 4p F F meets international standards, including IEC, and is CE compliant, ensuring it meets the highest regulatory requirements for safety and performance.

Moulded Case Circuit Breaker

Product Type

Automatic Circuit Breaker

Version

Electrical Durability

1500 cycle

Mechanical Durability

Nr. Operations 8500 cycle

Number of Poles

Opening Time

CB with SOR 15 ms CB with UVR 15 ms

Power Loss

at Rated Operating Conditions per Pole 3 W

Rated Current (In)

Main Circuit 25 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) 12.5 kA (380 V AC) 5 kA (415 V AC) 5 kA (440 V AC) 4 kA (480 V AC) 3.75 kA (500 V AC) 2.5 kA (250 V DC) 2 Poles in Series 2.5 kA

Rated Ultimate Short-Circuit Breaking Capacity (Icu)

(240 V AC) 10 kA (380 V AC) 10 kA (415 V AC) 10 kA (440 V AC) 8 kA (480 V AC) 7.5 kA (500 V AC) 5 kA (250 V DC) 5 kA

Rated Uninterrupted Current (Iu)

125 A

Release

TMF

Release Type

Short-Circuit Performance Level

Standards

IEC

Sub-type

Terminal Connection Type

Front

ETIM 8

EC000228 - Power circuit-breaker for trafo/generator/installation protection

ETIM 9

EC000228 - Power circuit-breaker for trafo/generator/installation protection

Object Classification Code

WEEE Category

5. Small Equipment (No External Dimension More Than 50 cm)

eClass

V11.1 : 27370409

Manufacturer ID

1SDA066526R1