Short Description: ABB T4H 320 PR221DS-LS/I In=320 4p FF - Fixed four-pole moulded case circuit breaker with front terminals and solid-state release, ideal for AC applications.
Product ModelT4H 320 PR221DS-LS/I In=320 4p F F
Material Number1SDA054137R1
Product ID74984
Stock on Request
Last updated: 8/29/2026
Key Features
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1. Reliable Electrical ProtectionThe ABB T4H 320 PR221DS-LS/I In=320 4p FF provides reliable electrical protection with a rated current of 320 A, ensuring safe operation in various AC applications.
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2. High PerformanceDesigned to meet IEC 60947 standards, this circuit breaker offers high performance and durability, making it suitable for demanding electrical systems.
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3. Solid-State ReleaseEquipped with a solid-state release mechanism, the T4H 320 PR221DS-LS/I In=320 4p FF ensures fast and efficient tripping in case of short circuits, enhancing overall system safety.
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4. Front Terminal ConnectionThe front terminal connection type allows for easy installation and maintenance, reducing downtime and increasing operational efficiency.
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
140 mm
Product Net Height
205 mm
Product Net Depth / Length
103.5 mm
Product Net Weight
3.05 kg
Product Main Type
SACE Tmax T
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5. Comprehensive CertificationsThe product is CE certified and RoHS compliant, ensuring it meets stringent environmental and safety regulations, providing peace of mind for users.
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
6000 cycle 120 cycles per hour
Mechanical Durability
20000 cycle 240 cycles per hour
Number of Poles
4
Power Loss
at Rated Operating Conditions per Pole 17.6 W
Rated Current (In)
320 A
Rated Impulse Withstand Voltage (Uimp)
8 kV
Rated Insulation Voltage (Ui)
1000 V
Rated Operational Voltage
690 V AC
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
