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Solid State Relay

A solid-state relay (SSR) is an electronic switching device that switches on or off when a small external voltage is applied across its control terminals. SSRs consist of a sensor which responds to an appropriate input (control signal), a solid-state electronic switching device which switches power to the load circuitry, and a coupling mechanism to enable the control signal to activate this switch without mechanical parts. The relay may be designed to switch either AC or DC to the load. It serves the same function as an electromechanical relay, but has no moving parts. Packaged solid-state relays use power semiconductor devices such as thyristors and transistors, to switch currents up to around a hundred amperes. Solid-state relays have fast switching speeds compared with electromechanical relays, and have no physical contacts to wear out. Application of solid-state relays must consider their lower ability to withstand momentary overload, compared with electromechanical contacts, and their higher "on" state resistance. Unlike an electromechanical relay, a solid-state relay provides only limited switching arrangements (SPST switching).

Relays and I/O Modules > Solid State Relay

型号	DS	厂牌	批号	数量	地区	采购
LH1520AAC		Vishay	-	1950	德国	要求报价
LH1520AAC		Vishay	-	2000	中国	要求报价
LH1520AAC		Vishay	2024+	4358	中国	要求报价
LH1520AAC		Vishay	-	25	中国	要求报价
LH1520AAC		Vishay	-	512	中国	要求报价
LH1520AAC		Vishay	-	1999	加拿大	要求报价

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