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RA4450LA08 – SSR ZS 400V 50A 10-90V
Carlo Gavazzi RA4450LA08 solid state relay, a 50 A single phase zero switching relay designed for industrial AC load control applications.
Why Choose the Carlo Gavazzi RA4450LA08 Solid State Relay?
The Carlo Gavazzi RA4450LA08 is a reliable single-phase zero switching solid state relay (SSR) designed for efficient 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 fast, silent and maintenance-free switching performance using semiconductor technology.
This solid state relay uses zero-cross switching technology to reduce electrical interference and switching stress on connected equipment. The RA4450LA08 offers dependable operation for industrial control systems where long service life, reliable load switching and compact panel installation are required.
With a rated operational current of 50 A AC, an operating voltage range of 42–480 V AC and a 10–90 V AC/DC control input, the RA4450LA08 is suitable for industrial control panels, heating systems, machinery and automated process equipment.
Key Advantages
- Reliable solid state relay designed for industrial AC switching applications.
- 50 A AC load current rating for demanding industrial loads.
- Zero-cross switching technology helps minimise electrical noise and switching stress.
- 10–90 V AC/DC control input for flexible control system integration.
- Silent semiconductor operation with no mechanical contacts to wear.
- Compact panel mounting design for electrical control cabinets.
Key Features
- Carlo Gavazzi RA44 solid state relay series.
- 50 A rated operational current.
- 42–480 V AC operational load voltage.
- 10–90 V AC/DC control voltage range.
- Single-pole SPST-NO output configuration.
- Zero voltage switching operation.
- Thyristor output technology for dependable AC load control.
- Panel mounting format with screw terminals.
Reliable Electronic Switching for Industrial Control
Solid state relays such as the Carlo Gavazzi RA4450LA08 provide dependable electronic switching for industrial loads by replacing mechanical contacts with semiconductor components. This improves switching reliability, reduces maintenance requirements and supports long operational life in automated systems.
The RA44 series is designed for industrial engineers requiring reliable load control in automation panels, heating applications and process equipment. Its zero-cross switching capability helps reduce electrical disturbance while maintaining efficient system operation.
Typical Applications
- Industrial heating and temperature control systems.
- Automation and machine control panels.
- Industrial ovens and thermal processing equipment.
- Resistive and inductive AC load switching.
- Process control systems.
- OEM electrical control assemblies.
Technical Specifications
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| Device Type | Solid State Relay | |
|---|---|---|
| Terminal Type | Screw | |
| Switching Current (A) | 50 A | |
| Load Voltage | 42–480 V AC | |
| Mounting Type | Panel | |
| 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 | RA4450LA08 | |
| Product type | Solid state relay | |
| Output configuration | SPST-NO | |
| Switching type | Zero cross switching | |
| Rated operational current | 50 A AC | |
| Operational voltage range | 42–480 V AC | |
| Control voltage | 10–90 V AC/DC | |
| Output type | AC thyristor | |
| Operational frequency | 45–65 Hz | |
| Blocking voltage | ≥ 850 Vp | |
| Mounting type | Panel mounting | |
| Terminal type | Screw terminals | |
| Dimensions | approx. 29 × 44.5 × 57.8 mm | |
| Protection rating | IP20 |
Frequently Asked Questions
What is the Carlo Gavazzi RA4450LA08 used for?
The RA4450LA08 is a solid state relay used for reliable switching of AC loads in industrial automation, heating and control applications.
What load current can the RA4450LA08 handle?
The relay supports a rated operational current of 50 A AC.
What voltage range does the RA4450LA08 support?
The relay operates with an AC load voltage range of 42–480 V AC.
What control voltage is required?
The RA4450LA08 accepts a 10–90 V AC/DC control input.
What type of switching does this solid state relay use?
The relay uses zero-cross switching technology to provide reliable electronic switching with reduced electrical interference.
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.
