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RZ3A48D75P – RZ 75A 480V DC IP + OVER TEMP PROTECTION
Carlo Gavazzi RZ3A48D75P solid state relay, a three-phase 75 A zero-cross switching relay with thermal protection designed for industrial automation and AC load control applications.
£258.03
Why Choose the Carlo Gavazzi RZ3A48D75P Solid State Relay?
The Carlo Gavazzi RZ3A48D75P is a high-performance three-phase solid state relay (SSR) designed for reliable switching of industrial AC loads including heating elements, motors and process equipment. As part of the advanced Carlo Gavazzi RZ3A solid state relay series, it provides dependable semiconductor switching technology with integrated thermal protection for demanding automation and power control applications.
This panel-mounted SSR delivers efficient, silent and maintenance-free switching while eliminating the mechanical wear associated with traditional contactors and electromechanical relays. The RZ3A48D75P features zero-cross switching, built-in overvoltage protection and an integrated over-temperature protection system with alarm output to improve monitoring and operational safety.
With a rated current of 75 A AC, a 42–530 V AC operating voltage range and a 4–32 V DC control input, the RZ3A48D75P is ideal for high-power three-phase applications including industrial heating, plastic processing machinery and automated production systems.
Key Advantages
- Advanced three-phase solid state relay with integrated over-temperature protection.
- 75 A AC rated current for high-power industrial load switching.
- Zero-cross switching technology reduces electrical noise and improves switching reliability.
- 4–32 V DC control input enables easy integration with PLCs and automation controllers.
- Integrated overvoltage protection and alarm output for enhanced system protection.
- Reliable panel-mounted construction for industrial control cabinets.
Key Features
- Carlo Gavazzi RZ3A solid state relay series.
- Three-pole AC solid state switching.
- Zero-cross switching mode.
- 75 A AC-51 rated operational current.
- 20 A AC-53a rated operational current.
- 42–530 V AC operating voltage range.
- 4–32 V DC control voltage.
- Integrated over-temperature protection with alarm output.
- Built-in overvoltage protection using integrated varistor technology.
- LED indication for control input and thermal alarm status.
Reliable Solid State Switching for Industrial Automation
Solid state relays such as the Carlo Gavazzi RZ3A48D75P use semiconductor technology to provide fast, silent and reliable switching of electrical loads. The zero-cross switching function helps reduce electrical interference, making the relay suitable for sensitive industrial control environments.
The RZ3A series is designed for automation engineers, machine builders and industrial equipment manufacturers requiring dependable three-phase load control. The integrated thermal protection and alarm output of the P version provide additional protection against overheating conditions during operation.
Typical Applications
- Industrial heating systems and electrical ovens.
- Plastic extrusion and thermoforming machinery.
- Blow moulding and processing equipment.
- Packaging and production machinery.
- Dryers and climatic chambers.
- Industrial automation and process control systems.
Technical Specifications
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| Device Type | Solid State Relay | |
|---|---|---|
| Terminal Type | Screw | |
| Switching Current (A) | 75 A | |
| Mounting Type | Panel | |
| Coil / Supply Voltage | 12 V DC, 24 V DC, 5 V DC | |
| Manufacturer | Carlo Gavazzi | |
| Series | RZ3A Solid State Relays | |
| Model | RZ3A48D75P | |
| Product type | Three-phase solid state relay | |
| Switching mode | Zero cross switching | |
| Number of poles | 3 | |
| Rated operational current AC-51 | 75 A | |
| Rated operational current AC-53a | 20 A | |
| Operating voltage | 42–530 V AC | |
| Control voltage | 4–32 V DC | |
| Operating frequency | 45–65 Hz | |
| Power connection | Screw terminals with captive clamp | |
| Mounting type | Panel mounting | |
| Dimensions | Approx. 103 × 73.5 × 47.6 mm | |
| Weight | Approx. 380 g |
Frequently Asked Questions
What is the Carlo Gavazzi RZ3A48D75P used for?
This solid state relay is used for switching three-phase AC loads in industrial automation, heating and process control applications.
What current rating does the RZ3A48D75P support?
The relay supports a rated operational current of 75 A AC for AC-51 applications.
What control voltage is required?
The RZ3A48D75P operates with a 4–32 V DC control input, allowing connection to industrial controllers and PLC outputs.
What protection features are included?
The relay includes overvoltage protection and over-temperature protection with alarm output to improve operational reliability.
Where is this solid state relay installed?
The RZ3A48D75P is designed for panel mounting inside industrial control cabinets and automation systems.
Trusted by Industrial Automation Engineers Worldwide
Carlo Gavazzi RZ3A solid state relays are trusted by automation engineers and machine builders for reliable three-phase load switching, efficient operation and long service life in demanding industrial environments.
