Hong Kong Airport express
MTR corporation experienced in the airport express many intermittend failures with ‘industrial’ type miniature contactors / block relays.
Due to the open construction of these relays dust collected inside the relay causing intermittend contact failure. Mors Smitt developed, based on its high quality 8 pole railway relay, a form, fit and function replacement.
The Mors Smitt solution fitted exactly in the space envelope of the old relays and the existing wiring could be identically connected to the Mors Smitt solution.
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