ABB Tmax Molded Case Circuit Breaker 4-Pole 320A 690V AC Breaking Capacity 70kA Fixed 1SDA054121R1 T4N320 FF PR221-LS 320A

ABB 1SDA054121R1 T4N320 FF PR221-LS 320A Molded Case Circuit Breaker is a high-quality industrial electrical protection device designed for reliable interruption of currents up to 320 amperes. Featuring a robust fixed mount design with 4 poles, this breaker supports rated operational voltages up to 690 V AC, making it well suited for heavy-duty electrical installations in manufacturing, automation, and electrical distribution sectors.

This circuit breaker comes equipped with a solid state tripping mechanism housed in the PR221DS-LS/I R release type, enabling fast and precise disconnection to protect electrical circuits from overloads and faults. Its front fixed terminals provide secure connections, while the lever actuator ensures quick manual reset operations. The device complies with CE, IEC, and RoHS standards, confirming its adherence to stringent safety and environmental guidelines.

With precise engineering dimensions of 205mm in height, 140mm width, and 103.5mm depth, the compact form factor facilitates straightforward integration into existing switchgear setups. The breaker’s rated impulse withstand voltage of 8 kV and insulation voltage of 1000 V ensures dependable performance in harsh electrical environments. This molded case circuit breaker is manufactured in Italy, symbolizing high standards in materials and craftsmanship.

Solid state tripping mechanism for enhanced circuit protection. Rated for 320A uninterrupted current to handle substantial loads. Fixed mounting type with front fixed terminals for secure installation. Compact design offers easy incorporation into electrical panels.

Meets international CE, IEC, and RoHS compliance standards. High breaking capacity of 70 kA safeguards against fault currents. Operates at 690 V AC rated voltage for versatile applications.

This ABB Tmax Molded Case Circuit Breaker is ideal for use in industrial, commercial, and electrical distribution systems requiring high reliability and protection. It is suitable for installation in electrical panels, automation systems, and manufacturing plants aiming to safeguard equipment and personnel. Explore the full range of ABB circuit protection products at EnvMart to find compatible components and accessories for optimized system performance.