Often the fan unit will be wired into the lighting circuit for convenience and efficiency. With this kind of installation there is often a need to leave the lighting circuit live whilst isolating the fan for maintenance.
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4 Pin 1 To 1/2/3/4 Motherboard CPU Fan Computer Case Fan Extension Adapter Cable PWM Female To 4 Pin Splitter Cable
Aliexpress UK
Included components 10A 1-GANG 3-POLE FAN ISOLATOR SWITCH WHITE;instuction leaflet;fixings. Fan isolator switch can be locked in the off position. Lisse White Moulded. Mounting type Pole. Plug profile Pole.
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12V PWM Fan Controller 3/4 Pin CPU Cooler Speed Governor, Auto Temp Control for PC Computer Case & Server Fans
Aliexpress UK
Single white moulded square edge fan isolator wall switch. 10 amp 3 pole plate switch BSEN60669-1 Triple pole fan control unit socket - 8.5cm x 8.5cm square. LG208 Supplied with fixing screws.
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Single 12V 0.8A DC PWM 2-3 Wire Fan Temperature Control Speed Controller Chassis Computer Noiseor PC CPU Cooler Fan Alarm STK IC
Aliexpress UK
Product Category: Fan Isolating Rocker Switch. Features: Triple pole switching. Wide rocker for easy operation. Bevelled edge faceplate. Finish: Victorian Brass. Insert/Rocker Colour: White Insert.
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12v IDE Male Port TO 3Pin Power Fan Cable Molex D Plug to 4 Ways 3 Pin Cooler Y Splitter Fan Cooling Power Supply Cable 22AWG
Aliexpress UK
Matt Black. Hidden screws. Antique Gold. Antique Brass. An alternative to the high-end Soho Lighting ‘The Sloane Collection’ switches and sockets. Available in 3 different finishes Conforms to British testing standards.
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Lian Li UNI Fan AL120 ARGB Cableless Fan Support L-Connect 3 PWM Silent Low Noise High RPM MB SYNC/Controller, V1 Triple Pack
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Eaton P048 10a 3 pole fan isolator switch.
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SATA to 3 Pin 4 Pin Fan Sleeved Power Splitter Cable Adapter,Molex to TX3 / TX4 (PWM) 12V PC Case Fan Cooler Y Splitter Cord
Aliexpress UK
This screw less design is a high gloss finish, is clean, simple and uncomplicated.
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SATA to 3 Pin / 4 Pin Fan Adapter 15 Pin SATA to 12V PC Case Fan Splitter Extension Power Cable Adapter
Aliexpress UK
BG 815 Nexus 3 Pole Fan Isolator 10 AX Switch. The BG 815 3 pole fan isolator does exactly as it says it does, manufactured to IEC 60669-2-4 regulations, it provides a functional and attractive looking choice for this essential job.
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12cm fan position to 3.5-inch mechanical hard drive transfer bracket chassis fan to HDD adapter bracket rack
Aliexpress UK