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RA4450-D08 – SSR ZS 400V 50A 3-32VDC
Carlo Gavazzi RA4450-D08 solid state relay, a 50 A single phase zero switching relay designed for industrial AC load control applications.
Why Choose the Carlo Gavazzi RA4450-D08 Solid State Relay?
The Carlo Gavazzi RA4450-D08 is a high-performance single-pole zero switching solid state relay (SSR) designed for reliable electronic switching of AC loads in industrial automation and control applications. As part of the trusted Carlo Gavazzi RA44 solid state relay series, it provides fast, silent and maintenance-free switching using semiconductor technology for demanding industrial environments.
This solid state relay uses antiparallel thyristor output technology and zero-cross switching to provide dependable control of resistive, inductive and capacitive loads. The electronic switching design eliminates mechanical contact wear while improving operational reliability in automated systems and electrical control panels.
With a rated operational current of 50 A AC, an operating voltage range of 42–480 V AC and a 3–32 V DC control input, the RA4450-D08 is ideal for industrial load switching applications requiring reliable performance and long service life.
Key Advantages
- High-performance solid state relay designed for industrial automation.
- 50 A AC load current rating for demanding switching applications.
- Zero-cross switching technology reduces electrical interference during operation.
- 3–32 V DC control input for compatibility with modern control systems.
- 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.
- 50 A rated operational current.
- 42–480 V AC operational load voltage.
- 3–32 V DC control voltage range.
- Single-pole SPST-NO output configuration.
- Zero-cross switching operation.
- Antiparallel thyristor output technology.
- Panel mounting design with screw terminals.
Reliable Electronic Switching for Industrial Control
Solid state relays such as the Carlo Gavazzi RA4450-D08 provide dependable electronic switching for industrial loads by replacing traditional mechanical contacts with semiconductor technology. This enables faster switching, reduced maintenance requirements and improved operational lifetime.
The RA44 series is designed for industrial engineers requiring reliable load control in automation systems, process equipment and electrical panels. Its zero-cross switching capability helps minimise electrical noise and switching stress while maintaining efficient system operation.
Typical Applications
- Industrial heating and temperature control systems.
- Automation and machine control panels.
- Industrial ovens and thermal equipment.
- Motor and resistive 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 DC, 24 V DC, 5 V DC | |
| IP Rating | IP20 | |
| Manufacturer | Carlo Gavazzi | |
| Series | RA44 Solid State Relays | |
| Model | RA4450-D08 | |
| Product type | Solid state relay | |
| Output configuration | SPST-NO | |
| Switching type | Zero crossing | |
| Rated operational current | 50 A AC | |
| Operational voltage range | 42–480 V AC | |
| Control voltage | 3–32 V DC | |
| Output type | AC thyristor | |
| Operational frequency | 45–65 Hz | |
| Mounting type | Panel mounting | |
| Terminal type | Screw terminals | |
| Protection rating | IP20 | |
| Weight | approx. 107 g |
Frequently Asked Questions
What is the Carlo Gavazzi RA4450-D08 used for?
The RA4450-D08 is a solid state relay used for reliable switching of AC loads in industrial automation, heating and control applications.
What load current can the RA4450-D08 handle?
The relay supports a rated operational current of 50 A AC.
What voltage range does the RA4450-D08 support?
The relay operates with an AC load voltage range of 42–480 V AC.
What control voltage is required?
The RA4450-D08 accepts a 3–32 V 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.
