Back when I was flying gliders,  Neutrik XLR connectors were the standard connector of the battery packs that provided power to the radio/vario/etc. IIRC, the systems were usually fused at 5 A at the main panel and another 10 A fuse at the battery pack itself.

This was an 'official' standard (not something a 'handy member' of the club had installed), the batterypacks were delivered by the German manufacturer that way. It obeyed all the rules and regulations w.r.t. the glider's electrical system. (if not, it would NOT have been installed, I can tell you...)

An important reason for using these connectors was that they were locked yet could be quickly disconnected, taken out of the aircraft and be recharged.

The manufacturer should be able to put your mind even more at ease. I'm sure Neutrik or another manufacturer of these connectors provide the data you are looking for. Anyway I'd feel perfectly safe pushing 5A through these connectors.

I just checked and on their website you can find full technical info on the connectors, including current capability. I've noticed some are rated up to 16A.

http://www.neutrik.com/fl/en/neutrik_productline.aspx

Regards,

These connectors are very reliable, if there is a problem it is almost always something wrong with the wire or the solder connection, but not the connector. I never knew the amp capacity of the pin connections but the PDF I found on the Neutrik.com site that dinges posted has the following information...
 3 pin: 16 amp
 4 pin: 10 amp
 5-6 pin: 7.5 amp

The PDF also says that they are rated to Connect/Disconnect 1000 times. I would say that it is 3 to 5 times better than that. They would not last very long if you plugged them while under load. Arcs will pit them pretty bad. Microphones output millivolts, Sound or Lighting consoles output up to 10 volts, Color Changers output up to 24 volts. The amps on all these outputs is quite low, less than .1 amp. If you tried to disconnect a hot load of 10 amps it would eventually become unusable.

It's in a dry and clean environment.

I figure the arcing will occur at the ends of the terminals and shouldn't have any effect when fully seated.

Neutrik and Switchcraft is what was missing for a decent Google.  
Sorry to say these are silver, came in a plain brown plastic bags, obviously manufactured by the world famous name brand "PUSH", and that's all I know.

G-