CPC order no. SW02707 is similar but operating point is about 4mm lower. If the fixing is adjustable then it could be used.
This RS part appears to be equivalent but has extra NC contact.
https://uk.rs-online.com/web/p/micro-switches/8207460
The Honeywell part YE2RBA2 appears to be the same part. Unfortunately it is a USA part and the minimum order from Farnell is 200 pieces. Otherwise available from Amazon.com at $25 plus shipping!
Best deal at Ebay uk...
FWIW If you are happy to overate the LEDs by 20% there is a unit availableon ebay under item no.
164886581739 (12W 34 - 46V 240mA). If the LEDs are only running at 50% rating then no harm should occur except for a slight reduction in lifetime.
The Tridonic unit (100V 200mA) will do the job too...
FWIW I found this gem on the Proteus website under technical info.
"Adjacent MCBs, RCBOs or MCB/RCD combinations should
not be continuously loaded at, or approaching, their normal
rated currents when mounted in enclosures. It is also good
engineering practice to make provisions for adequate...
Not an easy task! You may be able to gather some clues by powering up slowly using a variable DC power supply.
A dead short would not power up at all so this can be discounted as most of the LEDs flash. If you can raise the voltage to a point where most of the LEDs glow dimly it should be...
Jim asked "How can I tell of those cables which is live to go into the bottom of the new transformer?"
Apologies if I have mis-understood the question.
I have a similar bell box originally powered by 2 x 4.5V batteries which are difficult to obtain now.
My assumption was that someone has...
That wiring made me wince! So dangerous not to identify the live and neutral wires. I hope Jim has isolated the mains supply before touching any of the wires. It seems that Jim's knowledge of electricity is not even at DIY level. Without a voltmeter he could invest in a neon screwdriver to...