Short Description: ABB T4L 250 TMD 20-320 3P FF - High-performance moulded case circuit breaker with thermal magnetic trip, ideal for industrial applications.
Product ModelT4L 250 TMD 20-320 3p F F
Material Number1SDA054225R1
Product ID74980
Stock on Request
Last updated: 8/29/2026
Key Features
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1. Reliable Short-Circuit ProtectionThe ABB T4L 250 TMD 20-320 3P FF features a thermal magnetic trip, ensuring reliable short-circuit protection and preventing damage to your equipment.
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2. High Current RatingWith a rated current of 20 A and an interrupt rating of 200 kA, this circuit breaker is designed to handle high current loads in industrial settings.
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3. Durable ConstructionBuilt with robust materials, this circuit breaker is designed to withstand the rigors of industrial environments, ensuring long-lasting performance.
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4. Compliance with International StandardsThe ABB T4L 250 TMD 20-320 3P FF meets the standards of RoHS, GL, and CE certifications, ensuring compliance with international regulations.
Technical Specifications
Detailed engineering parameters based on manufacturer documentation
Specifications may be subject to change without notice
Parameter
Value
Parameter
Value
Environmental Information
9AKK10103A1057
Product Net Width
105 mm
Product Net Height
205 mm
Product Net Depth / Length
103.5 mm
Product Net Weight
2.35 kg
Product Main Type
SACE Tmax T
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5. Versatile ApplicationSuitable for a wide range of industrial applications, including transformer and generator installations, this circuit breaker offers flexibility and reliability in various settings.
Product Name
Moulded Case Circuit Breaker
Product Type
Automatic Circuit Breaker
Suitable For
T4
Suitable for Product Class
Moulded Case Circuit Breakers
Version
F
Electrical Durability
8000 cycle 120 cycles per hour
Mechanical Durability
20000 cycle 240 cycles per hour
Number of Poles
3
Power Loss
at Rated Operating Conditions per Pole 3.6 W
Rated Current (In)
20 A
Rated Impulse Withstand Voltage (Uimp)
8 kV
Rated Insulation Voltage (Ui)
1000 V
Rated Operational Voltage
690 V AC 750 V DC
Rated Service Short-Circuit Breaking Capacity (Ics)
(220 V AC) 200 kA (230 V AC) 200 kA (380 V AC) 120 kA (400 V AC) 120 kA (415 V AC) 120 kA (440 V AC) 100 kA (500 V AC) 85 kA (690 V) 70 kA
(220 V AC) 200 kA (230 V AC) 200 kA (380 V AC) 120 kA (400 V AC) 120 kA (415 V AC) 120 kA (440 V AC) 100 kA (500 V AC) 85 kA (690 V AC) 70 kA (250 V DC) 2 Poles in Series 100 kA (500 V DC) 2 Poles in Series 70 kA (750 V DC) 3 Poles in Series 50 kA
Rated Uninterrupted Current (Iu)
250 A
Release
TMD
Release Type
TM
Short-Circuit Performance Level
L
Standards
IEC
Sub-type
T4
Terminal Connection Type
Fixed Circuit-Breakers Front
Test Voltage Max (Utest)
3500 V
Test Voltage at Industrial Frequency for 1 Minute
3500 V
ETIM 8
EC000228 - Power circuit-breaker for trafo/generator/installation protection
Object Classification Code
Q
UNSPSC
39121100
WEEE Category
5. Small Equipment (No External Dimension More Than 50 cm)