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RA4490LA08 – SSR ZS 400V 90A 10-90V
Carlo Gavazzi RA4490LA08 solid state relay, a 90 A single phase zero switching relay designed for industrial AC load control applications.
Why Choose the Carlo Gavazzi RA4490LA08 Solid State Relay?
The Carlo Gavazzi RA4490LA08 is a high-performance single-phase zero switching solid state relay (SSR) designed for reliable electronic switching of AC loads in industrial automation, heating and process control applications. As part of the established Carlo Gavazzi RA44 solid state relay series, it provides silent, fast and maintenance-free switching using semiconductor technology for demanding industrial environments.
This solid state relay uses a zero switching design with an antiparallel thyristor output, making it suitable for resistive, inductive and capacitive loads. The RA4490LA08 provides dependable switching performance while eliminating mechanical contact wear, helping improve system reliability and operational lifetime.
With a rated operational current of 90 A AC, an operating voltage range of 42–480 V AC and a 10–90 V AC/DC control input, the RA4490LA08 is ideal for industrial control panels, heating systems, machinery and automated process equipment.
Key Advantages
- High-capacity solid state relay designed for industrial AC switching applications.
- 90 A AC load current rating for demanding industrial loads.
- Zero switching technology helps minimise electrical interference and switching stress.
- 10–90 V AC/DC control input for flexible industrial control integration.
- Silent semiconductor operation with no mechanical contacts to wear.
- Suitable for resistive, inductive and capacitive AC loads.
Key Features
- Carlo Gavazzi RA44 solid state relay series.
- 90 A rated operational current.
- 42–480 V AC operational load voltage.
- 10–90 V AC/DC control voltage range.
- Single-phase zero switching operation.
- Antiparallel thyristor output technology.
- 4000 V ACrms input-to-output isolation.
- Panel mounting design with screw terminals.
Reliable Electronic Switching for Industrial Control
Solid state relays such as the Carlo Gavazzi RA4490LA08 provide dependable electronic switching for industrial loads by replacing traditional mechanical contacts with semiconductor technology. This improves switching reliability, reduces maintenance requirements and supports long operational life in automated systems.
The RA44 series is designed for industrial engineers requiring robust load control in automation panels, heating systems and process equipment. Its zero switching operation and thyristor output provide reliable performance for a wide range of industrial AC applications.
Typical Applications
- Industrial heating and temperature control systems.
- Automation and machine control panels.
- Industrial ovens and thermal processing equipment.
- High-current resistive AC load switching.
- Process control systems.
- OEM electrical control assemblies.
Technical Specifications
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| Device Type | Solid State Relay | |
|---|---|---|
| Terminal Type | Screw | |
| Load Voltage | 42–480 V AC | |
| Mounting Type | Panel | |
| Switching Current (A) | 90 A | |
| Coil / Supply Voltage | 12 V AC, 12 V DC, 24 V AC, 24 V DC, 48 V AC, 48 V DC, 60 V DC, 72 V DC | |
| IP Rating | IP20 | |
| Manufacturer | Carlo Gavazzi | |
| Series | RA44 Solid State Relays | |
| Model | RA4490LA08 | |
| Product type | Solid state relay | |
| Switching type | Zero switching | |
| Output configuration | Single-phase AC thyristor output | |
| Rated operational current | 90 A AC | |
| Operational voltage range | 42–480 V AC | |
| Control voltage | 10–90 V AC/DC | |
| Operational frequency | 45–65 Hz | |
| Blocking voltage | ≥ 850 Vp | |
| Isolation voltage | ≥ 4000 V ACrms input to output | |
| Mounting type | Panel mounting | |
| Terminal type | Screw terminals | |
| Dimensions (H × W × D) | approx. 29 × 44.5 × 57.8 mm | |
| Weight | approx. 110 g | |
| Protection rating | IP20 |
Frequently Asked Questions
What is the Carlo Gavazzi RA4490LA08 used for?
The RA4490LA08 is a solid state relay used for reliable switching of high-current AC loads in industrial automation, heating and control applications.
What load current can the RA4490LA08 handle?
The relay supports a rated operational current of 90 A AC.
What voltage range does the RA4490LA08 support?
The relay operates with an AC load voltage range of 42–480 V AC.
What control voltage is required?
The RA4490LA08 accepts a 10–90 V AC/DC control input.
What type of switching does this solid state relay use?
The relay uses zero switching technology with a thyristor output for reliable electronic AC load control.
Trusted by Industrial Automation Engineers
Carlo Gavazzi solid state relays are widely used in industrial control systems to provide reliable, efficient and maintenance-free switching performance for automated equipment.
