Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
RA4850-D12 – SSR ZS 480V 50A 3-32VDC
Carlo Gavazzi RA4850-D12 single-phase solid state relay with zero-cross switching, 50 A current rating and 3–32 V DC control input for industrial AC load control.
£46.24
Why Choose the Carlo Gavazzi RA4850-D12 Solid State Relay?
The Carlo Gavazzi RA4850-D12 is a high-performance single-phase solid state relay (SSR) designed for reliable electronic switching of AC loads in industrial automation, heating systems and power control applications. As part of the proven Carlo Gavazzi RA48 solid state relay series, it combines zero-cross switching technology, semiconductor reliability and robust industrial construction for demanding control environments.
This panel-mounted SSR provides fast, silent and maintenance-free switching compared with traditional electromechanical relays. Its semiconductor-based output technology improves reliability for applications requiring frequent switching cycles, while the compact hockey-puck style housing allows straightforward installation with suitable thermal management.
With a rated operating current of 50 A AC, an operating voltage range of 42–530 V AC and a 3–32 V DC control input, the RA4850-D12 is ideal for industrial load switching applications including heating control, machinery and automation systems.
Key Advantages
- Reliable solid state relay designed for industrial switching applications.
- 50 A AC rated current suitable for industrial power loads.
- Zero-cross switching technology reduces electrical stress during operation.
- 3–32 V DC control input compatible with PLCs and automation systems.
- Silent, fast and wear-free semiconductor switching.
- Panel mount design for industrial control cabinets.
Key Features
- Carlo Gavazzi RA48 series solid state relay.
- Single-pole AC solid state switching.
- 50 A AC-51 rated operating current.
- 15 A AC-53a rated operating current.
- 42–530 V AC operating voltage range.
- 3–32 V DC control voltage range.
- Zero-cross output switching.
- SPST-NO (1 Form A) output configuration.
- Thyristor output technology.
- Screw terminal power connections.
Reliable Electronic Power Switching for Industrial Systems
Solid state relays such as the Carlo Gavazzi RA4850-D12 provide dependable electronic switching by using semiconductor technology instead of mechanical contacts. This enables silent operation, rapid response and extended service life in applications requiring frequent switching cycles.
The RA48 series is designed for industrial automation engineers requiring reliable AC load control, compact installation and efficient switching performance. Zero-cross technology helps minimise electrical stress while maintaining accurate control of connected equipment.
Typical Applications
- Industrial heating control systems.
- Temperature regulation equipment.
- Industrial automation panels.
- Machine control systems.
- Power switching applications.
- Process control equipment.
Technical Specifications
Tick the specs you need, then view products that match.
| Device Type | Solid State Relay | |
|---|---|---|
| Terminal Type | Screw | |
| Mounting Type | Panel | |
| Coil / Supply Voltage | 12 V DC, 24 V DC, 5 V DC | |
| Manufacturer | Carlo Gavazzi | |
| Series | RA48 Solid State Relays | |
| Model | RA4850-D12 | |
| Product type | Solid state relay | |
| Relay configuration | SPST-NO (1 Form A) | |
| Number of phases | 1-phase | |
| Switching mode | Zero cross | |
| Rated operating current AC-51 | 50 A AC | |
| Rated operating current AC-53a | 15 A AC | |
| Operating voltage | 42–530 V AC | |
| Control voltage | 3–32 V DC | |
| Blocking voltage | 1200 V peak | |
| Output type | Thyristor | |
| Mounting type | Panel / chassis mounting | |
| Connection type | Screw terminals | |
| Operating temperature | -20 to 70 °C | |
| Dimensions | approx. 44.5 × 29 × 57.8 mm |
Frequently Asked Questions
What is the Carlo Gavazzi RA4850-D12 used for?
The RA4850-D12 is a single-phase solid state relay used for reliable electronic switching of AC loads in industrial automation and control applications.
What current rating does the RA4850-D12 support?
The relay supports a rated operating current of 50 A AC for AC-51 applications.
What voltage range does this solid state relay operate with?
The RA4850-D12 operates with an AC load voltage range of 42–530 V AC.
What switching technology does the RA4850-D12 use?
The relay uses zero-cross switching technology with semiconductor output switching for reliable AC load control.
Where is the RA4850-D12 typically installed?
The relay is typically installed inside industrial control panels for automation, heating and AC power switching applications.
Trusted by Industrial Automation Professionals
Carlo Gavazzi solid state relays are widely used in industrial automation applications where reliable, efficient and maintenance-free electronic switching is required.
