[Avionics Today 09-12-2014] Peerless Electronics, distributor of switches, circuit breakers, relays and sensors for the aviation industry, has begun distributing the full line of Master Lock ...

S2329’S universal fit accommodates long or short aircraft circuit breakers, with or without collars. In addition Peerless stocks Master Lock S2029 aircraft power receptacle lockouts.

Austin Energy said a circuit lockout is like a safety switch. The utility said the trigger of the lockout was unknown but tweeted that crews were on site making necessary repairs.