NOTE: The circuit breaker may bounce back to the off (O) position if you
move the breaker too quickly.
Observe the status LEDs on the power supply faceplate. If the power supply is correctly
installed and functioning normally, the PWR OK, BRKR ON, and INPUT OK LEDs light
green steadily.
Related
Documentation
• Preventing Electrostatic Discharge Damage to an MX240 Router on page 444
• DC Power Cable Specifications for the MX240 Router on page 160
• DC Power Disconnection Warning for M Series, MX Series, and T Series Routers
• DC Power Wiring Sequence Warning for M Series, MX Series, and T Series Routers
• MX240 DC Power Electrical Safety Guidelines
Copyright © 2017, Juniper Networks, Inc.346
MX240 3D Universal Edge Router Hardware Guide