High-performance, three-pole, thermomagnetic release circuit breaker with front terminals, rated for 125-1250 A, and compliant with IEC standards.
Product ModelXT3S 250 TMD 125-1250 3p F F
Material Number1SDA068218R1
Product ID86647
Stock on Request
Last updated: 8/29/2026
Key Features
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1. High-Performance ProtectionThe XT3S 250 TMD 125-1250 3P FF circuit breaker is designed to provide reliable and efficient protection in industrial settings. Its thermomagnetic release ensures quick and effective response to short circuits.
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2. Compliance with IEC StandardsThis product meets the stringent requirements of IEC standards, ensuring that it is compatible with a wide range of electrical systems and applications.
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3. Versatile RatingWith a rating of 125-1250 A, this circuit breaker is suitable for various applications, from small to large-scale industrial installations, providing flexibility in its usage.
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4. Front Terminal ConnectionThe front terminal connection makes it easy to install and maintain, reducing the time and effort required for setup and repair.
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
Power Distribution
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5. Durable and ReliableConstructed with high-quality materials, this circuit breaker is built to last, offering a long service life and minimizing the need for frequent replacements.
Product Main Type
SACE Tmax XT
Product Name
Leistungsschalter
Product Type
Automatic Circuit Breaker
Version
F
CAD Dimensional Drawing
1SDH001295R0409
Connecting Capacity Main Circuit
Busbar 85..192 mm²
Current Type
AC/DC
Electrical Durability
120 cycles per hour 8000 cycle
Mechanical Durability
240 cycles per hour 25000 cycle
Number of Poles
3P
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)
1250 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
(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
TMD
Release Type
TM
Setting Range
87.5...125 A
Short-Circuit Performance Level
S
Standards
IEC60947-2
Sub-type
XT3
Terminal Connection Type
Front
Terminal Type
Bolt
Tightening Torque
8 N·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
Q
UNSPSC
39120000
WEEE Category
5. Small Equipment (No External Dimension More Than 50 cm)
