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This Siemens 5SY4304-5 is a 3-pole miniature circuit breaker (MCB) designed for reliable circuit protection. It features a tripping characteristic class A and a rated operational current of 4A at 35°C, with a maximum rated AC supply voltage of 400V.
The MCB has a mechanical service life of 10,000 switching cycles and an overvoltage category of III. Its switching capacity is rated at 10kA according to EN 60898 and 35kA according to IEC 60947-2. The unit is designed for DIN rail mounting and has a protection class of IP20 with connected conductors.
Key electrical specifications include an insulation voltage of 440V and a maximum DC operating voltage of 72V. The device supports a supply voltage frequency range of 50/60 Hz. Connection is facilitated via screw terminals, with support for solid, stranded, and finely stranded conductors ranging from 0.75mm² to 35mm².
Additional features include sealability and silicon-free construction. The breaker is suitable for industrial applications and mechanical engineering. Its dimensions are 90mm in height, 54mm in width, and 76mm in depth, with an installation depth of 70mm, occupying 3 modular width units.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.99 | $0.99 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The rated operational current is 4A at 35°C.
The rated AC supply voltage is 400V.
This circuit breaker has 3 poles.
The switching capacity is 10kA according to EN 60898.
It uses DIN rail mounting.