A1B 125 TMF 20-400 3p F F

Name: A1B 125 TMF 20-400 3p F F
Brand: ABB
SKU: A1B 125 TMF 20-400 3p F F

The ABB A1B 125 TMF 20-400 3p F F is a fixed three-pole moulded case circuit breaker with front terminals and thermal-magnetic (TMF) trip. It offers a rated current of 20 A and a short circuit breaking capacity of 18 kA at 415 V AC, ensuring reliable electrical protection.

Product ModelA1B 125 TMF 20-400 3p F F

Material Number1SDA066698R1

Product ID82637

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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Feature1. High Short Circuit Breaking Capacity The ABB A1B 125 TMF 20-400 3p F F boasts a short circuit breaking capacity of 18 kA at 415 V AC, providing robust protection against electrical surges.
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Feature2. Thermal-Magnetic Trip Equipped with a thermal-magnetic (TMF) trip mechanism, this circuit breaker ensures both thermal and magnetic overload protection, enhancing safety and reliability.
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Feature3. Front Terminal Connection Featuring front terminal connections, the ABB A1B 125 TMF 20-400 3p F F offers easy and convenient installation, reducing setup time and effort.
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Feature4. Compact Design With a compact design, this circuit breaker fits seamlessly into various electrical systems, making it ideal for space-constrained applications.

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

0.781 kg

Product Main Type

SACE FORMULA

Feature5. Compliance with International Standards The ABB A1B 125 TMF 20-400 3p F F meets international standards for electrical safety and performance, ensuring compliance with IEC standards and other regulatory requirements.

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 20 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) 9 kA (415 V AC) 5 kA (440 V AC) 5 kA (480 V AC) 5 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) 25 kA (380 V AC) 18 kA (415 V AC) 18 kA (440 V AC) 15 kA (480 V AC) 10 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

1SDA066698R1