Description
2.8 Communication and system connection
3WA1 air circuit breaker
Equipment Manual, 02/2023, 92310000002-06
139
The first CubicleBUS
2
module is connected to secondary disconnect terminals X8-1 to
X8-4 of the circuit breaker.
2
modules on the circuit breaker
External CubicleBUS
2
modules
120 Ω terminating resistor of the CubicleBUS
2
2
Guide frame of the 3WA air circuit breaker (optional)
Requirements
• 3WA air circuit breaker
• ETU600 electronic trip unit
• Terminating resistor (120 Ω)
• Optional CubicleBUS
2
module
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