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RA2A48D40 – SSR 2 POLE ZS 480V 40A RES.
Carlo Gavazzi RA2A48D40 two-pole solid state relay with 40 A AC per pole, 42–530 V AC operating voltage, 4.5–32 V DC dual control and zero-cross switching for industrial automation.
£92.85
Why Choose the Carlo Gavazzi RA2A48D40 Solid State Relay?
The Carlo Gavazzi RA2A48D40 is a compact two-pole solid state relay (SSR) designed for reliable switching of AC loads in industrial automation and control systems. As part of the established Carlo Gavazzi RA2A series, it provides zero-cross switching, dual independent control and high electrical isolation in a space-saving panel-mount package.
This solid state relay provides 2-pole switching with two independently controlled outputs, allowing each pole to be operated from its corresponding DC control input. Zero-cross switching activates the output at the first zero crossing of the AC supply, helping reduce electrical transients and electromagnetic interference during switching.
With a rated operational current of 40 A AC per pole and an operating voltage range of 42–530 V AC, the RA2A48D40 is suitable for a wide range of industrial AC switching applications. Its 4.5–32 V DC control input, quick-connect FASTON power terminals and compact panel-mount design allow straightforward integration into control cabinets and automation equipment.
Key Advantages
- Compact two-pole solid state relay for industrial automation.
- 40 A AC rated current per pole for high-load switching applications.
- 42–530 V AC operating voltage for versatile industrial load control.
- Zero-cross switching helps reduce switching transients and electrical interference.
- 4.5–32 V DC control input compatible with common industrial control systems.
- Two independently controlled poles provide flexible switching of AC loads.
Key Features
- Carlo Gavazzi RA2A solid state relay series.
- 2-pole switching with independent control of each pole.
- 40 A AC rated operational current per pole.
- 42–530 V AC operating voltage.
- 1200 V peak blocking voltage.
- 4.5–32 V DC control voltage.
- Zero-cross switching for controlled AC switching.
- 6.35 mm FASTON quick-connect terminals.
- Integrated LED indication for control status of each pole.
- Optically isolated control and output circuits.
- Compact panel-mount construction for control cabinets.
Reliable Solid State Switching for Industrial Automation
Solid state relays such as the Carlo Gavazzi RA2A48D40 provide fast, reliable electronic switching without the mechanical contacts used in conventional electromechanical relays. This allows frequent switching while reducing mechanical wear and helping extend service life in automated equipment.
The RA2A series uses zero-cross switching to activate the AC output close to the supply waveform's zero crossing. This helps minimise switching disturbances and makes the relay well suited to industrial control systems where dependable AC load switching and long operating life are important.
Typical Applications
- Industrial automation and control panels.
- AC heater and resistive load switching.
- Process temperature control systems.
- Industrial machinery and production equipment.
- PLC-controlled AC load switching.
- Building and industrial control systems.
Technical Specifications
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| Device Type | Solid State Relay | |
|---|---|---|
| Terminal Type | Faston / flat-pin | |
| Mounting Type | Panel | |
| Switching Current (A) | 40 A | |
| Coil / Supply Voltage | 12 V DC, 24 V DC, 5 V DC | |
| Manufacturer | Carlo Gavazzi | |
| Series | RA2A | |
| Model | RA2A48D40 | |
| Product type | Solid state relay | |
| Switching configuration | 2-pole / DPST | |
| Output switching mode | Zero cross | |
| Rated operational current | 40 A AC per pole | |
| Operating voltage | 42–530 V AC | |
| Blocking voltage | 1200 V peak | |
| Control voltage | 4.5–32 V DC | |
| Control method | Dual independent control | |
| Power connection | 6.35 mm FASTON terminals | |
| Isolation voltage | 4000 V AC | |
| Power factor | ≥0.95 | |
| Operating temperature | −20 to +70 °C | |
| Mounting type | Panel mounting | |
| Dimensions (H × W × D) | approx. 23.3 × 44.5 × 57.8 mm | |
| Load type | Resistive AC loads |
Frequently Asked Questions
What is the Carlo Gavazzi RA2A48D40 used for?
The RA2A48D40 is a two-pole solid state relay designed for switching AC loads in industrial automation, machinery and control systems.
What current can the RA2A48D40 switch?
The relay has a rated operational current of 40 A AC per pole, when used with suitable thermal management.
What supply voltage can the RA2A48D40 switch?
The RA2A48D40 is designed for AC loads operating from 42–530 V AC, with a 1200 V peak blocking voltage.
What control voltage does the RA2A48D40 require?
The relay accepts a 4.5–32 V DC control voltage and provides independent control of its two switching poles.
Does the RA2A48D40 use zero-cross switching?
Yes. The RA2A48D40 uses zero-cross switching, activating the AC output near the zero crossing of the supply waveform to help reduce switching transients.
Trusted for Industrial Automation and Control
Carlo Gavazzi RA2A solid state relays provide compact, reliable AC switching with independent pole control, zero-cross technology and high electrical isolation for demanding industrial automation applications.
