B737 Captain reported 3 of the ramp personnel were displaying hand signals for brake fire on the left side of the aircraft during arrival to the gate. The passengers and crew deplaned normally through the L1 door and jet way. The fire had extinguished with minimal damage to the aircraft.

Narrative

After completing the parking check on Aircraft X; I noticed 3 of the ramp personnel displaying the hand signals for Brake Fire on the left side of the aircraft. After a short discussion with the crew I opened the window and asked the Jet bridge driver to stop moving the bridge any closer; which he did. The First Officer confirmed the Fire Department was notified. I told the Purser and all FAs to re-arm the doors and prepare for an emergency egress but to wait until I could confirm the status of the fire.Through the open window; the ramp personnel immediately notified me that the fire had gone out and I asked the jet way driver to continue to move the jet way to the entrance door; and wait for my direction to open the door as they were still armed. I directed the Flight Attendants to disarm the entrance door and deplane normally; and to keep all other doors armed and to be ready for an immediate egress should the fire return. The passengers egressed; and then the crew egressed through the entrance door. The approach/landing was ZZZ Auto brakes 3. Auto brakes were disarmed below 80 knots when I took control of the aircraft. SOPs were normal and the exit was as planned on the high speed. Normal two engine taxi (ramp was wet) to the gate.The Ground Crew's keen awareness of the situation; and their textbook knowledge of the fire hand signals; and the fact that ALL of the ramp personnel were displaying the signals in unison make for a quick analysis for the crew and fire department response time.Fire department personnel advised me that the left outermost brake (#1) was 1;200 degrees; and the inboard pad (#2) was over 600 degrees. Upon visual inspection of the tires; the fuse plugs did not appear to release; and the tires appeared to remain inflated.