RS1A23A1-25 – SSR ZS 230V 25A 110VAC LED

Why Choose the Carlo Gavazzi RS1A23A1-25 Solid State Relay?

The Carlo Gavazzi RS1A23A1-25 is a robust single-phase AC solid state relay (SSR) designed for reliable switching of resistive loads in industrial control and automation applications. As part of the Carlo Gavazzi RS1 series, it uses zero-cross switching technology to provide fast, silent and wear-free electronic switching without the moving contacts found in conventional electromechanical relays.

The RS1A23A1-25 incorporates Carlo Gavazzi direct copper bonding (DCB) technology and opto-isolation for dependable operation in demanding industrial environments. An integrated LED provides clear indication of the control input status, while the clip-on protective cover provides IP20 touch protection and the self-lifting terminals simplify electrical installation.

Rated for an operational current of 25 A AC and a nominal operational voltage of 230 V AC, the RS1A23A1-25 accepts a 110 V AC ±15% control signal. Its output operates across 42–265 V AC, making the relay suitable for heaters, resistive loads and numerous industrial switching applications where frequent, reliable operation is required.

Key Advantages

• Industrial single-phase solid state relay with zero-cross switching.
• 25 A AC rated operational current for industrial load switching.
• 230 V AC nominal operational voltage.
• 110 V AC ±15% control input for AC control circuits.
• Zero-cross operation reduces switching disturbances with suitable resistive loads.
• Direct copper bonding (DCB) technology supports efficient thermal performance.
• Integrated LED control-input indication simplifies status monitoring.
• Opto-isolation provides greater than 4000 V AC RMS isolation between input and output.

Key Features

• Carlo Gavazzi RS1 industrial solid state relay series.
• Single-phase AC output.
• Zero voltage switching.
• 25 A AC RMS rated operational current.
• 42–265 V AC RMS operational voltage range.
• 110 V AC ±15% control voltage.
• 45–65 Hz operational frequency range.
• 650 V peak blocking voltage.
• Integrated LED input status indication.
• Clip-on IP20 touch-protection cover.
• Self-lifting power terminals for straightforward wiring.
• Housing constructed without moulding mass.

Reliable Zero-Cross Switching for Industrial Loads

The Carlo Gavazzi RS1A23A1-25 switches its AC output on when the sinusoidal waveform approaches the zero-voltage crossing and switches off when the load current crosses zero. This zero-cross switching principle is particularly well suited to resistive loads and helps reduce electrical disturbances associated with switching.

Unlike an electromechanical relay, the RS1A23A1-25 has no mechanical switching contacts to wear out. This allows silent, rapid and frequent switching, making the RS1 series particularly useful for industrial heating systems, temperature control equipment, packaging machinery and other automated processes requiring high switching endurance. An appropriately selected heatsink should be used where necessary to achieve the required load-current capability.

Typical Applications

• Industrial electric heating systems.
• Resistive heater and heating-element control.
• Temperature regulation equipment.
• Packaging and production machinery.
• Food and beverage processing equipment.
• Industrial ovens and process heating.
• Electrical control panels and automation systems.
• OEM machinery requiring frequent AC load switching.