XT3N 250 TMG 250-750 3p F F

Name: XT3N 250 TMG 250-750 3p F F
Brand: ABB
SKU: XT3N 250 TMG 250-750 3p F F

The ABB XT3N 250 TMG 250-750 3P F F is a reliable, three-pole circuit breaker with thermomagnetic release, suitable for generator protection. It features front terminals and high electrical durability.

Product ModelXT3N 250 TMG 250-750 3p F F

Material Number1SDA068257R1

Product ID83183

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. High Electrical DurabilityThe XT3N 250 TMG 250-750 3P F F is designed to withstand 120 cycles per hour and 8,000 cycles, ensuring long-lasting performance in demanding electrical environments.
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2. Thermomagnetic ReleaseEquipped with a thermomagnetic release (TMR) mechanism, this circuit breaker provides reliable protection against short circuits and overloads, ensuring safe operation.
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3. Generator ProtectionSpecifically designed for generator protection, the XT3N 250 TMG 250-750 3P F F offers robust performance in critical power distribution applications.
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4. Front Terminal ConnectionFeaturing front terminals, this circuit breaker simplifies installation and maintenance, reducing downtime and increasing efficiency.

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

105 mm

Product Net Height

150 mm

Product Net Depth / Length

70 mm

Product Net Weight

1.7 kg

Circuit Breaker Type to be Associated

Generator Protection

5. Compliance with IEC StandardsThe XT3N 250 TMG 250-750 3P F F meets IEC standards, ensuring compliance with international safety and performance regulations.

Product Main Type

SACE Tmax XT

Product Name

Moulded Case Circuit Breaker

Product Type

Automatic Circuit Breaker

Version

CAD Dimensional Drawing

1SDH001295R0409

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 17.8 W

Rated Current (In)

250 A

Rated Frequency (f)

50 / 60 Hz

Rated Impulse Withstand Voltage (Uimp)

8 kV

Rated Instantaneous Short-Circuit Current Setting (Ii)

750 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) 19 kA (500 V AC) 15 kA (525 V AC) 9.75 kA (690 V AC) 3.75 kA (250 V DC) 2 Poles in Series 36 kA (500 V DC) 3 Poles in Series 50 kA

Rated Ultimate Short-Circuit Breaking Capacity (Icu)

(220 V AC) 50 kA (230 V AC) 50 kA (240 V AC) 50 kA (380 V AC) 36 kA (415 V AC) 36 kA (440 V AC) 36 kA (500 V AC) 20 kA (525 V AC) 13 kA (690 V AC) 5 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

175...250 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

1SDA068257R1