Hach High Output Airblast System Manuel De L'utilisateur page 14

Figure 8 Wiring connections with a local disconnect
1 Label, wiring
2 Protective cover
3 Fuses (3x)
4 Power terminal block
5 Relay terminal block
14 English
6 Strain relief/conduit (AC mains)
7 Strain relief/conduit (relay wiring)
8 Air delivery
9 Relay N/O
10 Relay Com