XT3S 250 TMG 125-400 4p F F InN=100%

Name: XT3S 250 TMG 125-400 4p F F InN=100%
Brand: ABB
SKU: XT3S 250 TMG 125-400 4p F F InN=100%

The ABB XT3S 250 TMG 125-400 4p F F InN=100% is a robust, four-pole moulded case circuit breaker ideal for generator and transformer protection. It boasts a thermomagnetic release and adheres to IEC standards for maximum reliability and safety.

Product ModelXT3S 250 TMG 125-400 4p F F InN=100%

Material Number1SDA068275R1

Product ID87615

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. High Reliability and SafetyThe XT3S 250 TMG 125-400 4p F F InN=100% is designed to meet IEC standards, ensuring high reliability and safety in critical applications like generator and transformer protection.
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2. Thermomagnetic ReleaseEquipped with a thermomagnetic release, this circuit breaker provides efficient and reliable operation under various conditions, ensuring quick and safe disconnection in case of faults.
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3. Four-Pole ConfigurationThe four-pole configuration allows for comprehensive protection of electrical systems, making it suitable for a wide range of applications where high current handling is required.
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4. Efficient PerformanceWith a power loss of 6.6 W at rated operating conditions per pole, the XT3S 250 TMG 125-400 4p F F InN=100% offers efficient performance while maintaining high levels of protection.

Technical Specifications

Detailed engineering parameters based on manufacturer documentation

Specifications may be subject to change without notice

Parameter

Value

Parameter

Value

Environmental Information

9AKK108467A6707

Product Net Width

140 mm

Product Net Height

150 mm

Product Net Depth / Length

70 mm

Product Net Weight

2.1 kg

Circuit Breaker Type to be Associated

Generator Protection

5. Durable DesignConstructed with durable materials, this circuit breaker can withstand up to 25,000 cycles of electrical durability and 8,000 cycles of mechanical durability, ensuring long-lasting operation in demanding environments.

Product Main Type

SACE Tmax XT

Product Name

Moulded Case Circuit Breaker

Product Type

Automatic Circuit Breaker

Version

CAD Dimensional Drawing

1SDH001295R0483

Connecting Capacity Main Circuit

Busbar 85..192 mmÂ²

Current Type

AC/DC

Electrical Durability

120 cycles per hour 8000 cycle

Mechanical Durability

240 cycles per hour 25000 cycle

Number of Poles

Opening Time

CB with SOR 15 ms CB with UVR 15 ms

Order Multiple

1 piece

Power Loss

at Rated Operating Conditions per Pole 6.6 W

Rated Current (In)

125 A

Rated Frequency (f)

50 / 60 Hz

Rated Impulse Withstand Voltage (Uimp)

8 kV

Rated Instantaneous Short-Circuit Current Setting (Ii)

400 A

Rated Insulation Voltage (Ui)

800 V

Rated Operational Voltage

690 V AC 500 V DC

Rated Service Short-Circuit Breaking Capacity (Ics)

(220 V AC) 50 kA (230 V AC) 50 kA (240 V AC) 50 kA (380 V AC) 27 kA (415 V AC) 36 kA (440 V AC) 20 kA (500 V AC) 15 kA (525 V AC) 10 kA (690 V AC) 3 kA (250 V DC) 2 Poles in Series 27 kA (500 V DC) 3 Poles in Series 37.5 kA

Rated Ultimate Short-Circuit Breaking Capacity (Icu)

(220 V AC) 85 kA (230 V AC) 85 kA (240 V AC) 85 kA (380 V AC) 50 kA (415 V AC) 50 kA (440 V AC) 40 kA (500 V AC) 30 kA (525 V AC) 20 kA (690 V AC) 6 kA (250 V DC) 2 Poles in Series 36 kA (500 V DC) 3 Poles in Series 50 kA

Rated Uninterrupted Current (Iu)

250 A

Rated Voltage (Ur)

690 V

Recommended Screw Driver

Main Circuit M8

Release

TMG

Release Type

Setting Range

87.5...125 A

Short-Circuit Performance Level

Standards

IEC60947-2

Sub-type

XT3

Terminal Connection Type

Front

Terminal Type

Bolt

Tightening Torque

8 NÂ·m

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

UNSPSC

39120000

WEEE Category

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

eClass

V11.1 : 27370409

Manufacturer ID

1SDA068275R1