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RA4050H10NOS – SSR SENSE ZS 400V 50A NPN NO
Carlo Gavazzi RA4050H10NOS single-phase solid state relay with zero-cross switching, 50 A rated current and integrated system monitoring for industrial AC load control.
£67.86
Why Choose the Carlo Gavazzi RA4050H10NOS Solid State Relay?
The Carlo Gavazzi RA4050H10NOS is a high-performance single-phase solid state relay (SSR) designed for reliable switching and monitoring of industrial AC loads. As part of the advanced Carlo Gavazzi RA series solid state relay range, it combines zero-cross switching technology with integrated system monitoring and a normally open NPN alarm output for dependable industrial control applications.
This panel-mounted solid state relay provides fast, silent and wear-free electronic switching compared with traditional electromechanical relays. Its compact design and robust construction make it suitable for industrial automation systems where reliable load control, long service life and reduced maintenance are required.
With a 50 A AC rated current, a 150–440 V AC operating voltage range, and a 20–32 V DC control supply, the RA4050H10NOS is ideal for switching resistive and industrial AC loads in control panels and automation equipment.
Key Advantages
- Reliable single-phase solid state relay for industrial switching applications.
- Zero-cross switching technology reduces electrical stress during switching operations.
- 50 A AC rated current for demanding industrial loads.
- Integrated system monitoring improves operational reliability.
- NPN normally open alarm output provides diagnostic feedback.
- Panel mounting design for straightforward control cabinet installation.
Key Features
- Carlo Gavazzi RA series solid state relay.
- Single-pole panel mount SSR.
- Zero-cross switching output.
- 50 A AC-51 rated current.
- 15 A AC-53a rated current.
- 150–440 V AC operating voltage range.
- 20–32 V DC control supply.
- Normally open NPN alarm output.
- Screw terminal power connection.
Reliable Solid State Switching for Industrial Automation
Solid state relays such as the Carlo Gavazzi RA4050H10NOS provide fast electronic switching without mechanical contacts, improving reliability and reducing wear in industrial control systems. Zero-cross switching technology helps minimise electrical interference and extends component life in demanding applications.
The RA series is designed for automation engineers and control panel builders requiring dependable switching, integrated diagnostics and efficient control of AC loads in industrial environments.
Typical Applications
- Industrial heating control systems.
- Process temperature regulation equipment.
- Industrial automation panels.
- Motor and load switching applications.
- Machine control systems.
- Manufacturing and production equipment.
Technical Specifications
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| Device Type | Solid State Relay | |
|---|---|---|
| Terminal Type | Screw | |
| Switching Current (A) | 50 A | |
| Mounting Type | Panel | |
| Coil / Supply Voltage | 12 V DC, 24 V DC | |
| Manufacturer | Carlo Gavazzi | |
| Series | RA | |
| Model | RA4050H10NOS | |
| Product type | Solid state relay | |
| Relay configuration | Single pole | |
| Mounting type | Panel mounting | |
| Switching mode | Zero cross | |
| Rated current AC-51 | 50 A | |
| Rated current AC-53a | 15 A | |
| Operating voltage | 150–440 V AC | |
| Control voltage | 7–32 V DC | |
| External supply | 20–32 V DC | |
| Alarm output | Normally open NPN | |
| Power connection | Screw terminals |
Frequently Asked Questions
What is the Carlo Gavazzi RA4050H10NOS used for?
The RA4050H10NOS is a solid state relay used for switching and monitoring single-phase AC loads in industrial automation and control systems.
What current rating does the RA4050H10NOS support?
The relay supports a rated current of 50 A AC-51 for suitable industrial load applications.
What voltage range does the RA4050H10NOS operate with?
The RA4050H10NOS operates with an AC load voltage range of 150–440 V AC.
What switching technology does this solid state relay use?
The relay uses zero-cross switching technology to provide reliable electronic switching with reduced electrical stress.
How is the RA4050H10NOS mounted?
The RA4050H10NOS is designed for panel mounting inside industrial control cabinets.
Trusted by Industrial Automation Professionals
Carlo Gavazzi RA series solid state relays are widely used in industrial automation systems where reliable switching, diagnostic monitoring and long operational life are required.
