Gefran GRZ-H Three-phase solid-state relays, 10 A to 75A

Product Overview:

• Two or three-leg control
• Zero-crossing voltage switching
• Input command: DC/AC signals
• Operating range 0°C-70°C/32°F-158°F (derating curves)
• Load voltage 480V AC or 600V AC
• Status monitoring and five diagnostic LEDs
• Compact sizes to fit in electrical panels.
• Push-in connectors
• Cage clamps for power cables
• Smart fan options (Vdc/Vac)

Electrical heating control

The current range for the GRZ-H series is 10A to 75A, and this controller has an efficient zero-crossing (ZC) mode.

Two or three-leg load control

The GRZ-H series is configured to control two or three legs of a heating circuit. While three-leg breaks are commonly used, the two-leg option generates less heat in the electrical panel.

Diagnostics

The GRZ-H series monitors and prevents system failures, and it reduces the risk of costly downtime and material waste. To improve uptime, this controller has a silicon-controlled rectifier (SCR) over-temperature alarm, it monitors line voltage for failures, it has fuse break protection, and load interruptions are monitored and displayed clearly for users.

Further infomation:

https://www.gefran.com/products/power-control/solid-state-relays-with-without-heatsink/grz-h-three-phase-solid-state-relays-10-a-to-75a/