DIYAKY SF419Q 63A 4-Pole Manual Changeover Switch – safely switch between mains and generator, or between two power sources, on a DIN-rail mounted modular switch.
✔ 4 poles (4P) with 16 clearly numbered screw terminals
✔ 63A rated current, 400V AC, 50Hz
✔ Manual changeover for mains / generator / solar-inverter backup
✔ Compact modular DIN-rail design for distribution boards
✔ Suitable for homes, shops, offices, workshops and small industrial sites
DIYAKY SF419Q 63A 4-Pole Manual Changeover Switch
The DIYAKY SF419Q is a 63A 4-pole manual changeover switch designed to transfer a load safely between two power supplies, for example the utility mains and a standby generator. Its modular body fits standard distribution boards, and the clearly numbered terminals (1 to 16) make wiring quick and accurate for three-phase and neutral circuits.
Why choose this changeover switch?
4-pole design – switches all three phases and the neutral together, so the two sources stay fully isolated from each other.
63A rating at 400V AC, 50Hz – suitable for most homes, commercial premises and light industrial loads.
Prevents back-feed – a changeover switch stops generator power from feeding back into the grid, protecting people working on the lines.
Modular DIN-rail format – neat, space-saving installation in a standard distribution board.
Numbered screw terminals – 1/3, 5/7, 9/11, 13/15 on one side and 2/4, 6/8, 10/12, 14/16 on the other, for clear and error-free connections.
Simple manual operation – clear handle positions for mains, off and standby source.
Technical specifications
Brand / Model DIYAKY SF419Q
Type Manual changeover switch
Number of poles 4P
Rated current 63A
Rated voltage / frequency 400V AC, 50Hz
Terminals 16 screw terminals, numbered 1–16
Mounting 35mm DIN rail (modular)
Application Mains / generator or dual-source changeover
Please add any extra figures from the supplier datasheet (number of modules, wire size range, IP rating, standards) before publishing.
Typical applications
Mains-to-generator transfer in homes, shops, offices and hotels
Solar and inverter systems with grid or generator backup
Workshops, farms, clinics and small factories
Distribution boards and standby power installations
Installation notes
Installation and wiring must be done by a qualified electrician, with all supplies isolated.
Match the switch rating to your load. Protect each source with a suitably rated breaker.
Tighten all terminal screws firmly and check each connection against the terminal numbers.
