Carlo Gavazzi - RZ3A40D40 - 3-Phase Solid State Relay, Zero Switching, 40 A

The Carlo Gavazzi RZ3A40D40 is a 3-phase solid state relay designed for industrial applications requiring reliable and efficient switching of high-power loads. This zero-switching relay is rated for an operational current of 3 x 40 A at 400 VAC and is controlled via a 4-32 VDC input. It features integral snubber networks and offers optional over-temperature protection with an alarm output. The relay is suitable for switching various loads, including heating elements, motors, and transformers.  

Key Features:

• Zero Switching: Ensures that the relay switches at the zero-crossing point of the AC load voltage, reducing electrical noise and stress on the load.

• High Operational Current: Rated for 3 x 40 A, making it suitable for demanding industrial applications.

• Wide Control Voltage Range: Accepts a 4-32 VDC control input, providing flexibility in control system design.

• Integral Snubber Networks: Protects the relay from voltage transients, enhancing durability and reliability.

• Optional Over-Temperature Protection: Available with an over-temperature protection feature that includes an alarm output for enhanced safety.

Technical Specifications:

• Model Number: RZ3A40D40

• Rated Operational Voltage: 400 VAC

• Rated Operational Current: 3 x 40 A

• Control Voltage Range: 4-32 VDC

• Switching Mode: Zero Switching

• Non-Repetitive Peak Voltage: 850 Vp

• Operational Frequency Range: 45 to 65 Hz

• Off-State Leakage Current: < 3 mArms

• On-State Voltage Drop: ≤ 1.6 Vrms

• Operating Temperature Range: -30°C to +80°C (-22°F to +176°F)

• Housing Material: Noryl

• Weight: Approximately 380 g

Applications:

• Industrial Heating Systems: Ideal for controlling heating elements in plastic extrusion machines, thermoforming machines, and soldering ovens.

• Motor Control: Suitable for switching motors in various industrial applications.

• Transformer Switching: Capable of handling transformer loads in power distribution systems.