A1B 125 TMF 50-500 4p F F

Name: A1B 125 TMF 50-500 4p F F
Brand: ABB
SKU: A1B 125 TMF 50-500 4p F F

The ABB A1B 125 TMF 50-500 4P FF is a fixed four-pole moulded case circuit breaker with thermomagnetic release, ideal for applications requiring high reliability and efficiency. It features front terminals and is rated for 50 A, ensuring safe and uninterrupted electrical distribution.

Product ModelA1B 125 TMF 50-500 4p F F

Material Number1SDA066738R1

Product ID92770

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

1
1. High Breaking CapacityThe ABB A1B 125 TMF 50-500 4P FF boasts a breaking capacity of 18 kA, making it suitable for handling high short-circuit currents with ease.
2
2. Reliable OperationEquipped with thermomagnetic release, this circuit breaker ensures reliable operation under various electrical conditions, providing consistent performance.
3
3. Efficient DesignDesigned with front terminals, the ABB A1B 125 TMF 50-500 4P FF offers efficient installation and maintenance, reducing downtime and increasing overall productivity.
4
4. Compliance with StandardsThis product adheres to IEC standards, ensuring compliance with global electrical safety regulations, providing peace of mind for users.
5

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. Durable ConstructionBuilt to withstand 1500 cycles of electrical durability, the ABB A1B 125 TMF 50-500 4P FF is designed to last, minimizing the need for frequent replacements and reducing operational costs.

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 5.5 W

Rated Current (In)

Main Circuit 50 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

1SDA066738R1