Product description
Panasonic AQA411VL – Compact Zero-Cross Solid State Relay (SSR). The Panasonic AQA411VL is a compact and robust solid state relay (SSR) of zero-cross type with screw terminals. It can replace mechanical relays in industrial applications where silent operation, high durability, and fast switching are desired. The relay offers a wide AC load voltage range, zero-cross switching functionality, and LED status indication.
Zero-cross switching in solid state relays means that the relay switches the load on or off when the alternating (AC) drive voltage crosses zero volts—i.e., at the lowest point of the sinusoidal waveform. This provides several technical advantages, especially when controlling resistive or moderately inductive loads. It significantly reduces EMI, increases the service life of connected loads, decreases thermal stress on the relay, and improves inrush current control.
Specifications:
- Control voltage: 4–32 VDC (compatible with 5 V logic levels)
- Load current (max): 25 A (heat sink required)
- Load voltage: 75–250 VAC
- Phases: Single-phase
- Zero-cross switching: Yes
- LED indicator: Shows relay activation status
- Connection type: Screw terminals
- Frequency range: 45–65 Hz
- Weight: 66 g
- Operating temperature range: –20 °C to +80 °C
Applications:
- Industrial control systems: Especially where silent and fast AC switching is critical
- Automation & machinery: For example, pump control, heating, or lighting systems
- Retrofits: An efficient upgrade for systems using mechanical relays
