Should be a double pole fused spur with a fishtail key switch like the ones in emergency light test keys.
Fire alarm key switch spur.
Mk do a spur that does all of that in one.
The fire alarm panel was fed via a switched fused connection unit with a label on it saying.
M2 3a fused spur neon and key switch metal clad red this is a double pole mains safety isolatro switch with a 13a fuse fitted.
Also the spur should be marked as fire alarm some manufacturers don t mark them sme do you can just label it yourself though.
Safe for easy disconnection for maintenance though.
Double pole secret key operated switch fused spur bs complia.
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Te panel is a tate made unit.
Pa 1047 white fire alarm mains isolator c w keyswitch.
I link it below.
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I suppose if the switch was turned off the panel would make a complaining noise until its battery ran down.
Fire alarm panel do not switch off.
Key switch range suitable for fire or burglar alarm panels.
The fire alarm switched fused spur provides a secure method for safely isolating the mains voltage supply to fire systems in accordance with bs 5839.
5 to 40 c 24hour average not exceeding 25 c degree of protection.
This is enclosed in a metal box with knock outs for cable entry.