T4H 250 TMD 20-320 3p F F

Name: T4H 250 TMD 20-320 3p F F
Brand: ABB
SKU: T4H 250 TMD 20-320 3p F F

Short Product Description The ABB T4H 250 TMD 20-320 3p FF is a high-performance moulded case circuit breaker with thermomagnetic release, designed for reliable operation in various electrical systems. It offers excellent short-circuit breaking capacity and meets stringent safety standards.

Product ModelT4H 250 TMD 20-320 3p F F

Material Number1SDA054207R1

Product ID110479

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. Reliable Operation DescriptionThe ABB T4H 250 TMD 20-320 3p FF is engineered for reliable operation, ensuring consistent performance in demanding electrical environments. Its thermomagnetic release mechanism provides swift and effective protection against short circuits.
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2. High Short-Circuit Breaking Capacity DescriptionWith a short-circuit breaking capacity of up to 100 kA at 220/230 V AC, this circuit breaker is designed to handle high current surges, protecting your electrical system from potential damage.
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3. Efficient Design DescriptionThe compact design of the ABB T4H 250 TMD 20-320 3p FF makes it ideal for space-constrained applications. Its efficient operation reduces energy loss and enhances overall system performance.
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4. Compliance with Safety Standards DescriptionThis circuit breaker meets the stringent safety standards set by IEC 60947, ensuring compliance with global electrical safety regulations. It is also RoHS compliant, adhering to EU Directive 2011/65/EU and its amendments.

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

5. Durable Construction DescriptionBuilt to withstand the rigors of frequent use, the ABB T4H 250 TMD 20-320 3p FF has a mechanical durability of 20,000 cycles at 240 cycles per hour. Its robust construction ensures long-term reliability in your electrical system.

Moulded Case Circuit Breaker

Product Type

Automatic Circuit Breaker

Suitable For

Suitable for Product Class

Moulded Case Circuit Breakers

Version

Electrical Durability

8000 cycle 120 cycles per hour

Mechanical Durability

20000 cycle 240 cycles per hour

Number of Poles

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) 100 kA (230 V AC) 100 kA (380 V AC) 70 kA (400 V AC) 70 kA (415 V AC) 70 kA (440 V AC) 65 kA (500 V AC) 50 kA (690 V) 40 kA

Rated Ultimate Short-Circuit Breaking Capacity (Icu)

(220 V AC) 100 kA (230 V AC) 100 kA (380 V AC) 70 kA (400 V AC) 70 kA (415 V AC) 70 kA (440 V AC) 65 kA (500 V AC) 50 kA (690 V AC) 40 kA (250 V DC) 2 Poles in Series 70 kA (500 V DC) 2 Poles in Series 50 kA (750 V DC) 3 Poles in Series 36 kA

Rated Uninterrupted Current (Iu)

250 A

Release

TMD

Release Type

Short-Circuit Performance Level

Standards

IEC

Sub-type

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

UNSPSC

39121100

WEEE Category

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

eClass

V11.1 : 27370409

Manufacturer ID

1SDA054207R1