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The Siemens 5SY4550-8 is a 2-pole (1P+N) miniature circuit breaker with a tripping characteristic class D. It is rated for 230V AC and has a switching capacity of 10kA according to EN 60898.
This circuit breaker is suitable for mechanical engineering and industrial applications. It features a DIN rail mounting type and a lever actuator. The operational current is rated at 50A at 35°C, with derated values at higher temperatures.
Key electrical specifications include an insulation voltage of 250V AC and a maximum DC operating voltage of 72V. It offers a short circuit breaking capacity of 5kA according to UL 1077 and CSA C22.2 No.235. The device is designed with touch protection and is sealable.
Mechanical dimensions include a height of 90mm, width of 36mm, and depth of 76mm, with an installation depth of 70mm. It accommodates solid and stranded conductors from 0.75mm² to 35mm² and finely stranded conductors up to 25mm². The tightening torque for screw terminals is between 2.5 and 3.5 N·m.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.99 | $0.99 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The Siemens 5SY4550-8 has a rated supply voltage of 230V AC.
The operational current rating for the 5SY4550-8 is 50A at 35°C.
The switching capacity current is 10kA according to EN 60898 and 15kA according to IEC 60947-2.
The 5SY4550-8 uses DIN rail mounting.
Yes, the Siemens 5SY4550-8 is halogen-free.