SR223SMT01

Switching Voltage:	24VDC - Max
Coil Power:	--
Contact Material:	--
Operating Temperature:	-10°C ~ 55°C
Termination Style:	Screw Terminal
Mounting Type:	DIN Rail
Features:	LED Indicator
Turn Off Voltage (Min):	--
Turn On Voltage (Max):	--
Series:	SR223SMT
Contact Rating (Current):	1.5A
Contact Form:	3PST-2NC/1NO (2 Form B, 1 Form A)
Coil Voltage:	24VAC/DC
Coil Type:	--
Relay Type:	Safety
Part Status:	Active
Packaging:	Bulk

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Signal Relays, Up to 2 Amps - SR223SMT01 Application Field and Working Principle

Signal relays with up to 2Amps loads are relays that can control or switch 2A electrical currents. The SR223SMT01 is a particularly versatile miniature signal relay manufactured by Multicomp. This relay is designed for various applications, mainly in computerized and automated systems. The SR223SMT01 features a compact package size, low profile, and high contact reliability. Low input power consumption makes it an ideal choice for cost-sensitive applications.The SR223SMT01 is designed with 4 pins and is Switched by single coil (CO). It has an initial contact resistance less than 120mΩ, and a switching voltage of up to 250VAC/28VDC. The SR223SMT01 has a dielectric strength of between 500VAC for 5s or 1000VAC peak. Additionally, its contact ratings are 2A/1A@250VAC and 0.5A/200mA/60VDC.The SR223SMT01 is used in applications like HVAC and lighting control, auto control, telecommunication, domestic appliances, and computer peripherals. It is known to be highly reliable, with a mechanical life of up to 1,000,000 operations and an electrical life of up to 50,000 operations at full load.The working principle of the SR223SMT01 is based on electromagnetic induction. When electricity is applied to the coil, the subsequent electromagnetic field allows the armature to come into contact with the contacts and provide a switched connection. Once electricity is removed from the coil, the armature is released, and the contacts no longer provide a connection. This allows the SR223SMT01 to be used to control a variety of applications.The SR223SMT01 is powered by DC or AC rated voltage. When using DC power, the coil form is designed to be an insulator, protecting the device from dust, moisture, and other corrosive substances. An operating current is passed through the coil creating an electromagnetic field, thus forming a connection between the armature and the contacts.When using an AC supply, the SR223SMT01 acts as a true power contact. When an AC rated voltage is applied to the coil, an atmospheric pressure creates a pressure on the armature. This causes the armature to move and make contact with the contacts allowing current to flow. When the voltage is removed, the atmospheric pressure decreases, and the armature returns to a disconnected state.The SR223SMT01 offers good resistance to vibrations, temperature, and humidity. Its built-in sections consist of a metal case and two moving parts: a static armature and the movable contact. The movable contact is surrounded by a metal case to protect it from dust, moisture, and other corrosive substances. The contact is also embedded inside plastic insulation which helps reduce electrical noise and interference.The SR223SMT01 is designed with gold-plated contacts to provide superior resistance against oxidation and corrosion. The gold-plated contacts increase the contact pressure, leading to a longer operational life of the relay. The gold-plated contacts also help achieve low contact resistance which increases the current capacity of the relay. In conclusion, the SR223SMT01 is a compact, cost-effective signal relay designed for multiple applications. The relay features low input power consumption, and a dielectric strength of up to 1000VAC peak. Its gold-plated contacts provide superior operation life and improved contact resistance. Its operating principle is based on electromagnetic induction, and it offers excellent resistance against temperature, humidity, and mechanical vibrations.

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