Siemens SENTRON Miniature Circuit Breaker 2-Pole 4A Type D 400V AC 60V DC 10kA Breaking Capacity 5SY4204-8

Siemens 5SY4204-8 SENTRON Miniature Circuit Breaker is a robust electrical protection device designed for controlling and safeguarding two-pole AC and DC circuits in industrial, manufacturing, and automation environments. It offers a rated current of 4A with a Type D tripping characteristic that tolerates high inrush currents typical of motor starters and transformers.

Engineered to operate with voltages up to 400V AC and 60V DC, this circuit breaker withstands short-circuits with a breaking capacity of 10kA, compliant with IEC/EN 60898-1 and IEC/EN 60947-2 standards. The device mounts easily on DIN rails, securing circuits via screw terminals capable of withstanding 2.5 to 3.5 N·m torque for reliable conductor connectivity.

Its 2-pole configuration ensures simultaneous disconnection of live conductors, enhancing safety and circuit integrity. With IP20 ingress protection, the breaker provides user safety against accidental contact with live components. Its compact form factor, measuring 90mm in height, 36mm in width, and 76mm in depth, supports space-efficient panel installations.

The breaker performs reliably in ambient temperatures from minus 40 to 70 degrees Celsius and resists mechanical vibrations per IEC 60068-2-6. Typical mechanical endurance extends to approximately 10,000 operational cycles under standard conditions. It is ideal for motor starter protection, transformer secondary circuits, and DC control circuits up to 60V in industrial machinery and distribution boards.

Rated 4A current for low power circuit safety. Type D tripping suitable for high transient currents. 10kA breaking capacity ensures secure fault clearing. Compact DIN rail mount with screw terminal connections. IP20 protection against accidental touch.

Wide operating temperature range and mechanical endurance. Designed and manufactured in Germany.

This Miniature Circuit Breaker fits crucial roles in electrical panels across industrial, manufacturing, HVAC, and automation sectors. Its reliable protection capabilities contribute to operational safety and equipment longevity.

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