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Green rectangular PCB with eight relay blocks and blue terminal strips

Alphacool

Alphacool 8-Channel Relay Module 24V 2 in 1 accessory

SKU CH-NNRQ-7EBQ8

Eight-channel relay module with optocoupler isolation, selectable high or low trigger, and LED status per channel

  • Optocoupler isolation on every channel reduces electrical interference
  • Switchable high or low level trigger suits diverse control logic
  • Eight independent relays handle up to 30 A at AC 250 V or DC 30 V
  • Compatible with 5 V, 12 V and 24 V DC supply voltages
  • Industrial grade PCB with 9.5 mm barrier terminals ensures stable connections

8-Channel Relay Module for Automation

This 8-channel relay module switches loads up to 30 A at DC 30 V or AC 250 V. It is built for PLC automation equipment, industrial control systems, IoT projects and experimental circuit development. Each channel includes optocoupler isolation for anti-interference performance.

Switching Capacity and Trigger Flexibility

The module handles resistive loads rated at 30 A with a relay life exceeding 100,000 cycles. Users can select high-level or low-level trigger modes per channel, with defined voltage thresholds for 5 V, 12 V and 24 V supply options. The load terminals use 9.5 mm barrier connectors for secure wiring.

Power Draw and Thermal Behaviour

Quiescent current is 5 mA, rising to a maximum operating current of 190 mA at 5 V, 80 mA at 12 V or 50 mA at 24 V. The industrial-grade PCB and optocoupler isolation maintain stable operation under continuous switching. Each channel provides an on-board LED indicator for immediate status verification.

Highlights

  • Optocoupler isolation on every channel reduces electrical interference
  • Switchable high or low level trigger suits diverse control logic
  • Eight independent relays handle up to 30 A at AC 250 V or DC 30 V
  • Compatible with 5 V, 12 V and 24 V DC supply voltages
  • Industrial grade PCB with 9.5 mm barrier terminals ensures stable connections

Specifications

No published specifications for this item yet.

Questions about this item

Will the 24 V DC supply I already use for other PLC gear power this 8-channel relay module directly?

Yes. The module accepts DC 24 V as its supply voltage, and the supply voltage must match the relay coil voltage, so your existing 24 V rail can drive it without an extra converter.

How can I confirm each channel is switching correctly once I wire it up?

Every channel has an on-board LED that lights when the relay is energised, giving immediate visual confirmation of high- or low-level trigger operation.

Which terminals and jumpers are on the board, and do I need to buy any separate connectors?

The board provides DC+, DC-, IN, NO, COM and NC screw terminals with 9.5 mm pitch; all connections are made to those terminals, so no extra plugs or cables are required.

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