http://www.google.co.uk/search?hl=en&as_q=two metal terminal...

judging from the last reference I provided in the ref. box, puente = connector

at 0.59 cents/pence or whatever, they must be rather small!

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Note added at 31 mins (2010-02-15 13:50:38 GMT)
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NNOVISION - Industrial Electronic, Electrical & Elevator Components
Search our site for specific items, in either sensors, Switches, Connectors, or any Electronic & Elevator components. Switches · Sensors · Connectors ...
www.innovision.us/ - Cached - Similar
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Page 4 electrical connectors, omron relay Supplier, Manufacturer ...
Page 4 electrical connectors, omron relay Suppliers and buyers marketplace. ... elevator parts:thyssenkrupp elevator MC2 PCB original from thyssenkrupp ...
www.tradekey.com/selloffer_list/cid/0486/page_no/4.htm - Cached
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Anti-Static Bags,Buzzers: Electric,Connectors: Board to Board ...
... D Type Connectors, Sealed Micro Switches, Power Sockets, Elevator Car Operating ... Reed Relays, Solid State Relays, Electrical & Elevator Components, ...
www.thomex.com/innovision/control-signalling-devices.html - Cached

or elevator component

Good luck!

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Note added at 34 mins (2010-02-15 13:53:36 GMT)
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the only other thing I found was:

Puente H (electrónica) - Wikipedia, la enciclopedia libre
- [ Translate this page ]
Un Puente H o Puente en H es un circuito electrónico que permite a un motor eléctrico DC girar en ambos sentidos, avance y retroceso. ...
es.wikipedia.org/wiki/Puente_H_(electrónica) - Cached – Similar

Elevator Control Technology - Short Course
Individuals involved in testing, inspecting, and maintaining elevator relay logic control circuits. Participants should be well-grounded in electrical ...
catalog.asme.org/home.cfm?itemnumber=344 - Cached


as I said, not my field, so hope I am not putting my big foot in it!