Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
RZ3A40A25P – SSR 3 POLE ZS 24-440V 25A 24-275VAC +OTP
Carlo Gavazzi RZ3A40A25P three phase solid state relay with 25 A AC rating, zero-cross switching and integrated over-temperature protection for industrial automation applications.
£183.45
Why Choose the Carlo Gavazzi RZ3A40A25P Solid State Relay?
The Carlo Gavazzi RZ3A40A25P is a high-performance three-phase solid state relay (SSR) designed for reliable switching of industrial AC loads in automation, heating and process control applications. As part of the advanced Carlo Gavazzi RZ3A solid state relay series, it combines zero-cross switching technology with integrated over-temperature protection for dependable operation in demanding industrial environments.
This panel-mounted semiconductor relay provides fast, silent and wear-free electronic switching compared with conventional electromechanical contactors. The integrated protection function helps improve system reliability by monitoring thermal conditions and providing an alarm output when required.
With a rated load current of 25 A AC, an operating voltage range of 24–440 V AC and a 24–275 V AC / 24–50 V DC control input, the Carlo Gavazzi RZ3A40A25P is ideal for three-phase industrial switching applications requiring reliable and efficient power control.
Key Advantages
- Compact three-phase solid state relay for industrial automation applications.
- 25 A AC load current rating for industrial switching requirements.
- Zero-cross switching technology reduces electrical noise and switching stress.
- Integrated over-temperature protection with alarm output function.
- 24–440 V AC operating voltage range for industrial power systems.
- Long service life with silent semiconductor switching operation.
Key Features
- Carlo Gavazzi RZ3A solid state relay series.
- Three-phase SSR design.
- 25 A rated current at AC-51 duty.
- 5 A rated current at AC-53a duty.
- Zero-cross switching output mode.
- 24–275 V AC / 24–50 V DC control voltage.
- Integrated over-temperature protection.
- Alarm signal output for thermal monitoring.
- Panel mounting design with screw terminals.
Reliable Solid State Switching for Industrial Automation
Solid state relays such as the Carlo Gavazzi RZ3A40A25P provide dependable electronic switching for industrial loads without mechanical contact wear. Zero-cross switching helps minimise electrical interference while improving the operational life of connected equipment.
The RZ3A series is designed for automation engineers requiring robust three-phase switching solutions. The integrated thermal protection, wide voltage range and semiconductor switching technology allow reliable operation in modern industrial control systems.
Typical Applications
- Industrial heating and temperature control systems.
- Three-phase motor switching applications.
- Industrial automation control panels.
- Process equipment and machinery.
- OEM electrical control systems.
- Power switching applications requiring silent operation.
Technical Specifications
Tick the specs you need, then view products that match.
| Device Type | Solid State Relay | |
|---|---|---|
| Terminal Type | Screw | |
| Mounting Type | Panel | |
| Coil / Supply Voltage | 110 V AC, 115 V AC, 120 V AC, 208 V AC, 220 V AC, 230 V AC, 24 V AC, 240 V AC, 380 V AC, 400 V AC, 415 V AC, 440 V AC, 48 V AC | |
| IP Rating | IP10 | |
| Manufacturer | Carlo Gavazzi | |
| Series | RZ3A | |
| Model | RZ3A40A25P | |
| Product type | Three-phase solid state relay | |
| Switching mode | Zero-cross switching | |
| Number of phases | 3-phase | |
| Rated operating current AC-51 | 25 A | |
| Rated operating current AC-53a | 5 A | |
| Operating voltage | 24–440 V AC | |
| Control voltage AC | 24–275 V AC | |
| Control voltage DC | 24–50 V DC | |
| Additional protection | Integrated over-temperature protection | |
| Output monitoring | Alarm signal output | |
| Mounting type | Panel mounting | |
| Connection type | Screw terminals with clamp | |
| Protection rating | IP10 | |
| Operating temperature | -30 °C to +80 °C |
Frequently Asked Questions
What is the Carlo Gavazzi RZ3A40A25P used for?
The Carlo Gavazzi RZ3A40A25P is a three-phase solid state relay used for reliable electronic switching of industrial AC loads in automation and control systems.
What load current can the RZ3A40A25P handle?
The relay supports a rated operating current of 25 A AC for AC-51 duty applications.
What voltage range does the solid state relay support?
The RZ3A40A25P operates with loads from 24–440 V AC and accepts control voltages of 24–275 V AC or 24–50 V DC.
What additional protection is included?
The relay includes integrated over-temperature protection with an alarm output signal for improved system monitoring.
Where is this solid state relay typically installed?
The relay is typically installed inside electrical control panels and industrial automation systems using panel mounting.
Trusted by Industrial Automation Professionals
Carlo Gavazzi RZ3A solid state relays are widely used in industrial automation applications to provide reliable, efficient and long-life electronic switching solutions.
