Switch Box Relay Wiring Instructions

This guide covers the installation of the Mixmate Switch Box Relay system for controlling heavy-duty contactors.

1. Grounding and Neutral

• Ground: Connect your ground wire to the Green Terminal Block.

• Neutral: A neutral wire is not needed for this system. If your supply cable includes a neutral, cap the end of the wire securely.

2. 120V Input Power

• Connection: Connect the 120V input power to the Blue Terminal Block.

• Access: You must remove the yellow warning label to access the terminal screw.

• Three-Phase Warning: Do not use the "high leg" (Stinger leg) of a three-phase system for this supply.

3. High Voltage (230V) Considerations

[!WARNING] 230V Contactor Coils: These require two separate phases to operate. This box provides Phase A. Phase B must be connected directly to the other terminal on the 230V contactor coil.

4. Relay Configuration (Jumper vs. Individual)

If you are unable to switch the same phase on all contactors, you must isolate the relays. If you can switch the same phase, skip to Step 7.

To Isolate Relays (Remove Jumper):

• Step 4: Remove the blue jumper link from the Common (11) terminal on the relays using a flat-blade screwdriver.

• Step 5: Remove the jumper wire connecting the Blue Terminal Block to the relay.

To Wire Individual Inputs/Outputs:

• Step 6 (Input): Connect the supply side power to the Common (11) terminal on each individual relay.

• Step 7 (Output): Connect the Output (14) on each individual relay to the coil supply wire for its corresponding contactor.