Instant ON Solid State Relays
Description
Instant ON Solid State Relays are devices designed to immediately activate the load as soon as a pickup voltage is present. They are particularly effective in controlling inductive loads, providing a rapid response to voltage changes without delay.
Working Principle
Instant ON Solid State Relays operate by switching on the load instantaneously when the control voltage is applied. This immediate activation is facilitated by the absence of mechanical parts, which allows for faster switching compared to traditional electromechanical relays. The use of semiconductor switching elements, such as TRIACs or MOSFETs, enables these relays to handle high-speed operations efficiently. The optically isolated drivers ensure that there is no direct electrical connection between the input and output circuits, enhancing safety and reliability.
Applications
Instant ON Solid State Relays are often used in applications where rapid response to voltage changes is critical. For example, they are ideal for controlling inductive loads such as motors and transformers in industrial automation systems. Their ability to switch loads instantly makes them suitable for applications in aerospace and defense, where precise and immediate control is necessary.
Advantages over other Solid State Relays
One of the primary advantages of Instant ON Solid State Relays over other types is their ability to control inductive loads effectively without delay. This capability is particularly beneficial in applications requiring immediate load activation. Additionally, the lack of mechanical parts reduces wear and tear, leading to longer operational life and reduced maintenance compared to electromechanical relays.
Limitations
Despite their advantages, Instant ON Solid State Relays have limitations, such as high power dissipation due to conduction losses in the power switches. This can lead to increased heat generation, necessitating the use of heat sinks for high-current applications. The residual high forward voltage drop in TRIACs or SCRs during conduction can also limit their efficiency.
Considerations
When considering Instant ON Solid State Relays, it is important to evaluate the initial costs, which may be higher than traditional relays due to the advanced technology involved. However, the operating expenses can be lower due to reduced maintenance needs and longer durability. The accuracy of these relays is generally high, but the potential for heat-related issues should be considered in the design phase to ensure reliability. Replacement and maintenance costs are typically lower due to the absence of mechanical components, which reduces the likelihood of mechanical failure.
from Backer Hotwatt Inc.
Features: 3-32 VDC Input. 600 volt blocking voltage. 4000 volt isolation. Zero voltage turn-on. Built-in snubber. 100% tested at rated current. High surge capability. U.L. recognized. C.S.A. certified [See More]
- Turn-On Switching: InstantON
- Mounting: Panel
- Application Type: General
- Input Voltage (Control Signal) Type: DC
from RS Components, Ltd.
Solid State Relay, DIN, 5A, 280 Vac [See More]
- Turn-On Switching: InstantON; Instantaneous
- Input Voltage (Control Signal) Type: DC
- Mounting: DIN; Din rail
- Output Voltage Type: AC
from RS Components, Ltd.
Sensata / Crydom DR24D12R [See More]
- Turn-On Switching: InstantON; Instantaneous
- Input Voltage (Control Signal) Type: DC
- Mounting: DIN; Din rail
- Output Voltage Type: AC
from Broadcom Inc.
The ASSR-32XX Solid State Relay series consist of an AlGaAs infrared light-emitting diode (LED) input stage optically coupled to a high-voltage output detector circuit. The detector consists of a high-speed photovoltaic diode array and driver circuitry to switch on/off two discrete high voltage... [See More]
- Turn-On Switching: InstantON
- Application Type: General; EMR / Reed Relay Replacement
- Solid State Relay Type: Optically
- Mounting: PCBoard; Socket or Plug-in Style
from CARLO GAVAZZI Automation Components
The RK Series comes with features that provide time-saving installation and a reduction in downtime, thanks to trouble-free solid state operation, during the lifetime of the SSR. It conforms to global standards such as UL 508, CSA C22.2 and EN 60947-4-3; therefore, it can be used globally in... [See More]
- Turn-On Switching: InstantON; Zero Switching
- Application Type: General
- Solid State Relay Type: Transformer
- Mounting: Socket or Plug-in Style
from Broadcom Inc.
The ASSR-41XX Solid State Relay (SSR) series uses an AlGaAs infrared light-emitting diode (LED) input stage optically coupled to a high-voltage output detector circuit. The detector consists of a high-speed photovoltaic diode array and driver circuitry to switch on/off two discrete high voltage... [See More]
- Turn-On Switching: InstantON
- Application Type: General; EMR / Reed Relay Replacement
- Solid State Relay Type: Optically
- Mounting: PCBoard; Socket or Plug-in Style
from CARLO GAVAZZI Automation Components
The RP1 is an SSR series for socket- or PCBmounting, providing an ideal interface between logic controls and AC loads. The RP1 is designed for resistive and inductive loads up to 480VACrms. Internally this new series enjoys an improved technical design with the introduction of stress-free flexible... [See More]
- Turn-On Switching: InstantON; Zero Switching
- Application Type: General
- Solid State Relay Type: Optically
- Mounting: PCBoard
from Broadcom Inc.
The ASSR-32XX Solid State Relays (SSRs) consist of an AlGaAs infrared light-emitting diode (LED) input stage optically coupled to a high-voltage output detector circuit. The detector consists of a high-speed photovoltaic diode array and driver circuitry to switch on/off two discrete high voltage... [See More]
- Turn-On Switching: InstantON
- Application Type: General; EMR / Reed Relay Replacement
- Solid State Relay Type: Optically
- Mounting: PCBoard; Socket or Plug-in Style
from CARLO GAVAZZI Automation Components
Aim of this solid state switching device is to switch heater loads and motor loads frequently. The range offers solutions up to 90 AAC in 17.5 mm width. Output connections are via a screw connection, having a captivated washer allowing for safe looping or via box clamp which can handle cables up to... [See More]
- Turn-On Switching: InstantON; Zero Switching
- Application Type: General
- Solid State Relay Type: Transformer
- Mounting: DIN
from Broadcom Inc.
The ASSR-14XX Solid State Relay (SSR) series consists of an AlGaAs infrared light-emitting diode (LED) input stage optically coupled to a high-voltage output detector circuit. The detector consists of a high-speed photovoltaic diode array and driver circuitry to switch on/off two discrete high... [See More]
- Turn-On Switching: InstantON
- Application Type: General; EMR / Reed Relay Replacement
- Solid State Relay Type: Optically
- Mounting: PCBoard; Socket or Plug-in Style
from CARLO GAVAZZI Automation Components
The industrial, 1-phase relay with antiparallel thyristor output is the most widely used industrial SSR due to its multiple application possibilities. The relay can be used for resistive, inductive and capacitive loads. The zero switching relay switches ON when the sinusoidal curve crosses zero and... [See More]
- Turn-On Switching: InstantON; Zero Switching
- Application Type: General
- Solid State Relay Type: Optically
- Mounting: Socket or Plug-in Style
from Broadcom Inc.
The ASSR-1611 Solid State Relay (SSR) is specifically designed for high current applications, commonly found in industrial equipment. The relay is a solid-state replacement for single-pole, normally-open, (1 Form A) electromechanical relays. The ASSR-1611 consists of an AlGaAs infrared... [See More]
- Turn-On Switching: InstantON
- Application Type: General; EMR / Reed Relay Replacement
- Solid State Relay Type: Optically
- Mounting: PCBoard; Socket or Plug-in Style
from CARLO GAVAZZI Automation Components
The DC switching relay is used in applications in which there is a need for fast switching of small DC loads with a high input/output isolation of more than 4000 VACrms. The DC switching transistor relay always switches ON and OFF in accordance with the applied control voltage. DC Solid State Relay. [See More]
- Turn-On Switching: InstantON; Zero Switching
- Application Type: General
- Solid State Relay Type: Optically
- Mounting: Socket or Plug-in Style
from Broadcom Inc.
The ASSR-15XX Solid State Relay series is specifically designed for high current applications, commonly found in industrial applications. The ASSR-15XX Series consist of an AlGaAs infrared light-emitting diode (LED) input stage optically coupled to a high-voltage output detector circuit. The... [See More]
- Turn-On Switching: InstantON
- Application Type: General; EMR / Reed Relay Replacement
- Solid State Relay Type: Optically
- Mounting: PCBoard; Socket or Plug-in Style
from Broadcom Inc.
The ASSR-15XX Solid State Relay series is specifically designed for high current applications, commonly found in the industrial applications. The ASSR-15XX Series consist of an AlGaAs infrared light-emitting diode (LED) input stage optically coupled to a high-voltage output detector circuit. The... [See More]
- Turn-On Switching: InstantON
- Application Type: General; EMR / Reed Relay Replacement
- Solid State Relay Type: Optically
- Mounting: PCBoard; Socket or Plug-in Style
from Broadcom Inc.
The ASSR-15XX Solid State Relay (SSR) series is specifically designed for high current applications, commonly found in industrial applications. The ASSR-15XX Series consist of an AlGaAs infrared light-emitting diode (LED) input stage optically coupled to a high-voltage output detector circuit. The... [See More]
- Turn-On Switching: InstantON
- Application Type: General; EMR / Reed Relay Replacement
- Solid State Relay Type: Optically
- Mounting: PCBoard; Socket or Plug-in Style
from Broadcom Inc.
The ASSR-30xC Solid State Relay series is specifically designed for fast switching applications, commonly found in the test and measurement systems. The low C x R and low output off-state leakage current provide higher system throughput and reduce system errors. The dual channel configuration of... [See More]
- Turn-On Switching: InstantON
- Application Type: General; EMR / Reed Relay Replacement
- Solid State Relay Type: Optically
- Mounting: PCBoard; Socket or Plug-in Style
from Broadcom Inc.
The ASSR-40xC Solid State Relays (SSRs) are specifically designed for fast switching applications, commonly found in test and measurement systems. The low C x R and low output off-state leakage current provide higher system throughput and reduce system errors. The dual channel configuration of... [See More]
- Turn-On Switching: InstantON
- Application Type: General; EMR / Reed Relay Replacement
- Solid State Relay Type: Optically
- Mounting: PCBoard; Socket or Plug-in Style
from Broadcom Inc.
The ASSR-30xC Solid State Relay series is specifically designed for fast switching applications, commonly found in the test and measurement systems. The low C x R and low output off-state leakage current provide higher system throughput and reduce system errors. The dual channel configuration of... [See More]
- Turn-On Switching: InstantON
- Application Type: General; EMR / Reed Relay Replacement
- Solid State Relay Type: Optically
- Mounting: PCBoard; Socket or Plug-in Style
from Broadcom Inc.
The ASSR-322R Solid Stae Relay (SSR) is specifically designed for fast switching applications commonly found in test and measurement systems. The low C x R and low output off-state leakage current provide higher system throughput and reduce system errors. The ASSR-322R dual channel configuration is... [See More]
- Turn-On Switching: InstantON
- Application Type: General; EMR / Reed Relay Replacement
- Solid State Relay Type: Optically
- Mounting: PCBoard; Socket or Plug-in Style
from Broadcom Inc.
The ASSR-40xC Series is specifically designed for fast switching applications, commonly found in the test and measurement systems. The low C x R and low output off-state leakage current provide higher system throughput and reduce system errors. The dual channel configuration of ASSR-402C is... [See More]
- Turn-On Switching: InstantON
- Application Type: General; EMR / Reed Relay Replacement
- Solid State Relay Type: Optically
- Mounting: PCBoard; Socket or Plug-in Style
from Broadcom Inc.
The ASSR-41XX Solid State Relays (SSRs) use an AlGaAs infrared light-emitting diode (LED) input stage optically coupled to a high-voltage output detector circuit. The detector consists of a high-speed photovoltaic diode array and driver circuitry to switch on/off two discrete high voltage MOSFETs. [See More]
- Turn-On Switching: InstantON
- Application Type: General; EMR / Reed Relay Replacement
- Solid State Relay Type: Optically
- Mounting: PCBoard; Socket or Plug-in Style