At first glance the Breeze can be mistaken for the more common Air Ministry
10H series. They both have an aluminium diecast body and a square four hole
The design using an internal thread prevents damage to the threads on the
connector caused by external careless blows to the equipment. Replacing
fixed connectors is a lot more difficult than rewiring a free lead.
The Breeze connector does not have a keyway, relying on the contacts for
mating. Hence polarisation is not possible as in the pattern 104 range.
The Breeze have rigid contacts in a moulded contact block which is
independent of the housing.
Front housings have the internal thread. Rear housings are also used for
screening and protection.
The internal thread is very close to the thread on the 10H. The
10H/391 shown in the top picture can be screwed into the Breeze but is
Some examples of the range.
Plessey literature states:
"There are 23 contact configurations from 1 to 27 ways.
Styles available are:
Pressurised bulkhead plugs
Detachable lead plugs
Short reach sockets
Quick release plugs/sockets"
"Although used in many aircraft today, this range was first used in WW II
under the trade name "Breeze". It replaced point-to-point wiring systems and
opened the way for mass aircraft production. These connectors allowed
the prefabrication of complete wiring systems which were then fitted at any
convenient assembly stage.
Extensive development was carried out to improve temperature conditions,
altitude and electrical characteristics with the result the range is capable
of operating over the range -65oC to +150oC. "
Comparison between an Air
Ministry 10H series Connector on the left and the Breeze 5X/33 on the
The 10H/391 is 39.45mm square with holes on 30.5mm centres. Mass
The Breeze is 36.4mm square with holes on 30.5mm centres. Mass 36g
The guide pins are some 1mm above the housing.
Moulding Detail - Smart & Brown Manufacture Silver-plated
pins, S&B 126