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This Siemens SENTRON 5SY4520-5 is a miniature circuit breaker with a 2-pole, 1+N configuration, suitable for AC circuits. It operates at a rated voltage of 230V and has a current rating of 20A at 35°C, with derated values at higher temperatures.
The circuit breaker features a Type A tripping characteristic and a mechanical service life of 10,000 switching cycles. Its switching capacity is rated at 10kA according to EN 60898 and 20kA according to IEC 60947-2. It is designed for DIN rail mounting with a quick assembly system and has a compact width of 36mm, occupying 2 modular units.
Additional features include halogen-free and silicon-free construction, making it suitable for various industrial and mechanical engineering applications. The device has an IP20 protection class with connected conductors and supports conductor cross-sections from 0.75 mm² to 35 mm² for solid and stranded wires.
Compliance includes CE, EAC, UR, and VDE approvals. The operational current is specified at different ambient temperatures, showing a maximum of 20A at 35°C and decreasing to 16.08A at 60°C. The power loss per pole is 2.5W.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.99 | $0.99 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The operating voltage is 240V AC.
The current rating is 20A.
It has a mechanical service life of 10,000 switching cycles.
It complies with IEC / EN 60898-1, IEC / EN 60947-2, and UL 1077 standards.
The maximum breaking capacity is 20 kA according to IEC 60947-2.
Yes, it is halogen-free.