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The SIEMENS 5SY4110-8 is a UL 1077 supplementary protector designed to provide additional protection. These protectors trip faster than standard UL 489 circuit breakers, offering enhanced protection for sensitive devices. It can be used in industrial applications and as a local disconnecting means inside the panel when a branch circuit protection device is already present.
Supplementary protectors are equipped with a delayed overload/time-dependent thermal release for low overcurrent's and with an instantaneous electromagnetic release for high overload and short-circuit currents.
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