IP20 Junction Box, 4-Channel. FOUNDATION Fieldbus and PROFIBUS-PA. Ident. no.: 6611451. Junction box for DIN rail mounting. Short-circuit protection per drop line/spur . Switch-in terminating resistor. Cable shielding: Capacitive or direct connection with housing potential selectable via switch. aluminium housing. Entity and FISCO compliant according to IEC 60079-11