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RA4850HA12 – SSR ZS 480V 50A 90-280V
Carlo Gavazzi RA4850HA12 solid state relay, a 50 A single-phase zero-cross switching relay designed for industrial AC load control applications.
£46.24
Why Choose the Carlo Gavazzi RA4850HA12 Solid State Relay?
The Carlo Gavazzi RA4850HA12 is a robust solid state relay (SSR) designed for reliable switching and control of single-phase AC loads in industrial automation, heating systems and power control applications. As part of the established Carlo Gavazzi RA series, this panel-mounted relay provides dependable zero-cross switching technology for efficient and long-lasting industrial operation.
This solid state relay delivers fast, silent and wear-free electronic switching compared with traditional electromechanical relays. The RA4850HA12 is designed for applications requiring a high current rating, wide operating voltage range and reliable control input compatibility in industrial environments.
With a rated current of 50 A AC and an operating voltage range of 42–530 V AC, the RA4850HA12 is suitable for controlling resistive, inductive and capacitive loads in machinery, heating equipment and automation systems. Its panel-mount format allows straightforward installation with suitable heat dissipation accessories.
Key Advantages
- Reliable solid state relay designed for industrial switching applications.
- 50 A AC load current rating for demanding power control systems.
- 42–530 V AC operating voltage range for flexible installation.
- Zero-cross switching reduces electrical noise and switching stress.
- 90–280 V AC/DC control input for industrial control systems.
- Compact panel-mounted design for electrical cabinets and machinery.
Key Features
- Carlo Gavazzi RA series solid state relay.
- 50 A rated AC-51 current.
- 15 A rated AC-53a current.
- 42–530 V AC load voltage range.
- 90–280 V AC/DC control voltage.
- Zero-cross switching technology.
- Single-pole panel mounting configuration.
- Screw terminal power connections.
- Optically isolated solid state switching design.
Reliable Solid State Switching for Industrial Control
Solid state relays such as the Carlo Gavazzi RA4850HA12 provide dependable electronic switching without mechanical contacts, improving service life and reducing maintenance requirements. Zero-cross switching technology helps minimise electrical interference while providing smooth control of AC loads.
The RA series is designed for industrial automation engineers requiring reliable switching solutions for heating, machinery and process control applications. Its high current capability and flexible control input make it suitable for a wide range of industrial installations.
Typical Applications
- Industrial heating and temperature control systems.
- Ovens, furnaces and thermal processing equipment.
- Machine automation and control panels.
- Industrial power switching applications.
- Process control equipment.
- OEM machinery and manufacturing systems.
Technical Specifications
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| Device Type | Solid State Relay | |
|---|---|---|
| Terminal Type | Screw | |
| Mounting Type | Panel | |
| Coil / Supply Voltage | 110 V AC, 110 V DC, 115 V AC, 120 V AC, 125 V DC, 208 V AC, 220 V AC, 220 V DC, 230 V AC, 240 V AC, 250 V DC | |
| Manufacturer | Carlo Gavazzi | |
| Series | RA Solid State Relays | |
| Model | RA4850HA12 | |
| Product type | Solid state relay | |
| Number of poles | 1-pole | |
| Number of phases | 1-phase | |
| Rated operating current AC-51 | 50 A | |
| Rated operating current AC-53a | 15 A | |
| Operating voltage | 42–530 V AC | |
| Control voltage | 90–280 V AC/DC | |
| Switching mode | Zero cross | |
| Mounting type | Panel mounting | |
| Connection type | Screw terminals |
Frequently Asked Questions
What is the Carlo Gavazzi RA4850HA12 used for?
The RA4850HA12 is a solid state relay used for switching and controlling single-phase AC loads in industrial automation, heating and power control applications.
What current rating does this solid state relay support?
The relay supports a rated operating current of 50 A AC for AC-51 applications.
What voltage range does the RA4850HA12 operate with?
The RA4850HA12 operates with an AC load voltage range of 42–530 V AC.
What control voltage is required?
The relay accepts a 90–280 V AC/DC control voltage input.
Where is this relay typically installed?
The relay is typically installed inside electrical control panels and industrial machinery using suitable thermal management accessories.
Trusted by Industrial Automation Professionals
Carlo Gavazzi RA series solid state relays are widely used by automation engineers and machine builders to provide reliable electronic switching, efficient power control and long service life in industrial systems.
