SDS7S110A Industrial Controls

Series:	*
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Moisture Sensitivity Level (MSL):	--

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Time Delay Relays: SDS7S110A application field and working principleTime Delay Relays, often referred to as TDRs, are widely used in the industrial sector as automated controllers of electrical circuits, on/off switches, and timers. The SDS7S110A is a multifunctional TDR with functions like single phase, two-phase, three-phase, timer-delay on, off, intermittent, and periodic. The SDS7S110A is suitable for a variety of applications, such as controlling motor starters, regulating industrial process, controlling home appliance, and providing protection against accidental switch off. It offers reliable switching performance, designed in such a way that it is easy to be mechanically, electrically, and economically operated. Its built-in pocket structure design is suitable for occasions with limited space and easy installation. The SDS7S110A has several working principle types, such as single phase, two-phase, three-phase, as well as timer-delay on, off, intermittent, and periodic operations. Single phase TDRs accept direct power input and are solely responsible for controlling the circuit in simple switching applications, such as motor starter control. In two-phase operation, the TDR controls the circuit through automatic switching by receving two separate voltage signals from two contactor lines. This dual-contact switching is very useful in applications where constant input from the two contactors is required. In three-phase operation, the SDS7S110A controls the three-phase circuit using three separate voltage signals. This operation can be used to control home appliance, such as air conditioners, refrigerators, and ovens. In timer-delay on, off, intermittent, and periodic operations, the SDS7S110A can be programmed to automatically switch the circuit on and off after a set amount of time. The TDR is also capable of switching the circuit periodically based on a pre-defined time interval, as well as intermittently, which can be used to regulate the current in the circuit brifely in several short time intervals of time. The SDS7S110A is also built with several features to help increase its safety, such as under voltage, phase sequence, phase unlikliness, humidity, and over temperature protection. These protections are implemented to protect the TDR and the circuits connected to it from any potential malfunctions or damages caused by harsh environmental conditions. In conclusion, the SDS7S110A is a multifunctional TDR with a variety of application fields, from simple switching operations to complex time-delay operations. It is built with a pocket structure design that ensures an easy installation, and is equipped with safety features to protect it and the circuits connected to it from any potential malfunctions.

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