Carlo Gavazzi RZ3A48D55 three-phase solid state relay with 480 V AC switching, 55 A output rating and 4–32 V DC control input for industrial automation systems.
SKU:RZ3A48D55MPN:RZ3A48D55
Price
List Price£214.95ex VAT
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£214.95
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Why Choose the Carlo Gavazzi RZ3A48D55 Solid State Relay?
The Carlo Gavazzi RZ3A48D55 is a high-performance three-phase solid state relay (SSR) designed for reliable switching of industrial AC loads in automation systems, heating equipment and machine control applications. As part of the advanced Carlo Gavazzi RZ3A series, it provides zero-cross switching technology, high current capability and long operational life for demanding industrial environments.
This solid state relay uses semiconductor switching technology to provide fast, silent and wear-free operation compared with traditional electromechanical relays. The RZ3A series is designed for three-phase applications requiring dependable switching performance, efficient thermal management and reliable operation in industrial control panels.
With a 480 V AC operational voltage, a 55 A three-phase output rating and a 4–32 V DC control input, the RZ3A48D55 is suitable for controlling industrial loads including heaters, machinery and automation equipment.
Key Advantages
Advanced three-phase zero-cross solid state relay for industrial switching.
55 A AC output current rating for high-power industrial applications.
480 V AC operational voltage suitable for demanding power systems.
4–32 V DC control input compatible with PLCs and automation controllers.
Silent semiconductor switching with no mechanical contact wear.
Integrated protection features including built-in overvoltage protection.
Key Features
Carlo Gavazzi RZ3A three-phase solid state relay series.
Zero-cross switching technology.
3-pole AC switching output.
55 A rated operational current.
4–32 V DC control voltage.
Built-in overvoltage protection.
Integrated snubber network.
LED indication for control input status.
Panel-mount industrial housing.
Reliable Three-Phase Switching for Industrial Automation
Solid state relays such as the Carlo Gavazzi RZ3A48D55 provide reliable electronic switching for industrial loads where frequent operation, silent performance and long service life are required. Semiconductor switching eliminates mechanical wear, making the relay suitable for demanding automation environments.
The RZ3A series is designed for machine builders, electrical engineers and control panel manufacturers requiring dependable three-phase load switching with compact panel-mounted construction and integrated protection features.
Typical Applications
Industrial heating systems.
Plastic processing machinery.
Ovens and thermal control equipment.
Motor switching applications.
Packaging and production machinery.
Automation control panels.
Technical Specifications
Tick the specs you need, then view products that match.
Terminal Type
Screw
Load Voltage
480 V AC
Switching Current (A)
55 A
Manufacturer
Carlo Gavazzi
Series
RZ3A Three-Phase Solid State Relays
Model
RZ3A48D55
Product type
Three-phase solid state relay
Switching mode
Zero cross switching
Number of poles
3
Rated operational voltage
480 V AC
Operational voltage range
42–530 V AC
Control voltage
4–32 V DC
Rated operational current
55 A AC
AC-53a motor switching rating
15 A AC
Minimum operational current
250 mA AC
Operational frequency
45–65 Hz
Blocking voltage
1200 Vp
Non-repetitive surge current
600 Ap (10 ms)
I²t for fusing
1800 A²s
Protection rating
IP10
Connection type
Screw terminal with captive clamp
Dimensions (H × W × D)
approx. 103 × 73.5 × 41 mm
Weight
approx. 370 g
Operating temperature
-30°C to +80°C
Coil / Supply Voltage
12 V DC, 24 V DC, 5 V DC
IP Rating
IP10
Frequently Asked Questions
What is the Carlo Gavazzi RZ3A48D55 used for?
The RZ3A48D55 is a three-phase solid state relay used for switching high-power AC loads in industrial automation, heating and machine control applications.
What voltage can the RZ3A48D55 switch?
The relay is designed for 480 V AC applications with an operational voltage range of approximately 42–530 V AC.
What is the output current rating of this solid state relay?
The RZ3A48D55 provides a 55 A AC operational current rating for three-phase industrial loads.
What control voltage does the relay require?
The relay accepts a 4–32 V DC control input.
What switching technology does this relay use?
The RZ3A48D55 uses zero-cross semiconductor switching to provide reliable and low-wear operation.
Trusted by Industrial Automation Engineers Worldwide
Carlo Gavazzi RZ3A solid state relays are used by automation engineers and machine builders to deliver reliable three-phase switching, efficient control and long-lasting semiconductor-based performance.
Terminal Type
Screw
Load Voltage
480 V AC
Switching Current (A)
55 A
Manufacturer
Carlo Gavazzi
Series
RZ3A Three-Phase Solid State Relays
Model
RZ3A48D55
Product type
Three-phase solid state relay
Switching mode
Zero cross switching
Number of poles
3
Rated operational voltage
480 V AC
Operational voltage range
42–530 V AC
Control voltage
4–32 V DC
Rated operational current
55 A AC
AC-53a motor switching rating
15 A AC
Minimum operational current
250 mA AC
Operational frequency
45–65 Hz
Blocking voltage
1200 Vp
Non-repetitive surge current
600 Ap (10 ms)
I²t for fusing
1800 A²s
Protection rating
IP10
Connection type
Screw terminal with captive clamp
Dimensions (H × W × D)
approx. 103 × 73.5 × 41 mm
Weight
approx. 370 g
Operating temperature
-30°C to +80°C
Coil / Supply Voltage
12 V DC, 24 V DC, 5 V DC
IP Rating
IP10
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UK delivery
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
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