RZ3A40D75P – SSR 3 POLE ZS 24-440V 75A 4-32VDC +OTP
Carlo Gavazzi RZ3A40D75P three phase solid state relay with 75 A load rating, 24–440 V AC operation, 4–32 V DC control input and over-temperature protection for industrial switching applications.
SKU:RZ3A40D75PMPN:RZ3A40D75P
Price
List Price£295.93ex VAT
Your Price (ex VAT)
£295.93
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Why Choose the Carlo Gavazzi RZ3A40D75P Solid State Relay?
The Carlo Gavazzi RZ3A40D75P is a high-performance three-phase solid state relay (SSR) designed for reliable switching of industrial electrical loads including heating elements, motors and transformers. As part of the advanced Carlo Gavazzi RZ3A solid state relay series, it provides zero-cross switching, high electrical isolation and dependable semiconductor-based control for demanding automation and process applications.
This relay uses solid state switching technology to provide silent operation, long service life and reliable performance where frequent switching cycles are required. The RZ3A series incorporates built-in overvoltage protection, an integral snubber network and the P version adds over-temperature protection with alarm output for enhanced system monitoring.
With a 75 A rated operational current, 24–440 V AC operating voltage range and a 4–32 V DC control input, the RZ3A40D75P is ideal for three-phase industrial load switching in heating control, process equipment and automation systems.
Key Advantages
Industrial three-phase solid state relay designed for reliable switching.
75 A load current capability for high-power industrial applications.
Zero-cross switching technology reduces electrical stress during operation.
4–32 V DC control input compatible with PLCs and automation controllers.
Integrated overvoltage protection and snubber network.
Over-temperature protection with alarm output for improved system protection.
Key Features
Carlo Gavazzi RZ3A solid state relay series.
Three-phase panel mount solid state relay.
75 A rated operational current.
24–440 V AC operating voltage range.
4–32 V DC control voltage range.
Zero-cross switching operation.
Built-in varistor overvoltage protection.
Integral snubber network for improved switching reliability.
Over-temperature protection with alarm output.
Screw terminals with captive clamp connection.
Reliable Solid State Switching for Industrial Control
Solid state relays such as the Carlo Gavazzi RZ3A40D75P provide fast, silent and reliable switching for industrial loads. Semiconductor technology eliminates mechanical wear points, making these relays suitable for applications requiring frequent operation and long service life.
The RZ3A series is designed for machine builders and automation engineers requiring dependable three-phase switching performance. Its integrated protection features, zero-cross switching and over-temperature monitoring allow reliable operation in modern industrial systems.
Typical Applications
Industrial heating systems and heating elements.
Plastic processing and extrusion machinery.
Thermoforming and moulding equipment.
Industrial ovens and dryers.
Motors, transformers and process equipment.
Automation and machine control systems.
Technical Specifications
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Terminal Type
Screw
Mounting Type
Panel
Switching Current (A)
20 A
Manufacturer
Carlo Gavazzi
Series
RZ3A
Model
RZ3A40D75P
Product type
Three-phase solid state relay
Number of poles
3
Switching mode
Zero-cross switching
Rated operational current
75 A AC
Rated current AC-53a
20 A
Operating voltage
24–440 V AC
Control voltage
4–32 V DC
Frequency range
45–65 Hz
Protection rating
IP10
Mounting type
Panel mounting
Terminal type
Screw connection with captive clamp
Dimensions (H × W × D)
approx. 103 × 73.5 × 41 mm
Weight
approx. 380 g
Operating temperature
-30 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 RZ3A40D75P used for?
The RZ3A40D75P is a three-phase solid state relay used for switching industrial loads including heating elements, motors and transformers.
What current rating does this solid state relay support?
The relay supports a rated operational current of 75 A AC for suitable industrial applications.
What control voltage does the RZ3A40D75P require?
The relay uses a 4–32 V DC control input suitable for industrial automation controllers.
What switching method does this relay use?
The RZ3A40D75P uses zero-cross switching to reduce electrical stress and improve switching reliability.
What additional protection does the P version provide?
The P version includes over-temperature protection with alarm output to help protect the relay and connected system from excessive temperature conditions.
Trusted by Industrial Automation Engineers
Carlo Gavazzi RZ3A solid state relays are widely used in industrial automation, heating control and machine applications where reliable three-phase switching performance is required.
Terminal Type
Screw
Mounting Type
Panel
Switching Current (A)
20 A
Manufacturer
Carlo Gavazzi
Series
RZ3A
Model
RZ3A40D75P
Product type
Three-phase solid state relay
Number of poles
3
Switching mode
Zero-cross switching
Rated operational current
75 A AC
Rated current AC-53a
20 A
Operating voltage
24–440 V AC
Control voltage
4–32 V DC
Frequency range
45–65 Hz
Protection rating
IP10
Mounting type
Panel mounting
Terminal type
Screw connection with captive clamp
Dimensions (H × W × D)
approx. 103 × 73.5 × 41 mm
Weight
approx. 380 g
Operating temperature
-30 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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