Overview Note
IMPORTANT SELECTION INFORMATION: Whenever adding or replacing QMR and THFP panel mounted switches it is important that you provide us with these four bits of information:
1 The overall WIDTH of the paneboard or switchboard enclosure or box.
2 The WIDTH of the actual opening where the doors of the switches can be
seen. This determines if switch side fillers or "wings" will be needed,
3 If removing an existing switch and replacing with a switch of a higher
ampacity, or removing a blank cover plate above or below existing
switches to add switch(es), we will need the total available vertical space
that is exposed. This determines if blank filler plates will be needed to
completely close off the deadfront opening.
4 Please give us the ampacity of the fuses you will need for the added
switches to complete the installation.
NOTE: 30-100A QMR and QMR/THFP switches were made in both the pistol rotary handle AND the red slide handle versions and are COMPLETELY INTERCHANGEABLE. For the sake of asthetics, let us know whether you need ROTARY of SLIDE TYPE operators so that all the switches match.
200A and larger QMR and THFP switches ARE ALL ROTARY HANDLE operated and are interchangeable.
THESE PANELBOARD SWITCHES ACCEPT EDISON 110-200 AMP TYPE ECNR RK5 250V TIME DELAY CARTRIDGE FUSES. THESE FUSES PROVIDE OVER-CURRENT PROTECTION AND 200,000A SHORT CIRCUIT PROTECTION. TO MAKE YOUR FUSE SELECTION PLEASE SEE THE "FUSES & ACCESSORIES" SECTION OF THIS WEBSITE.
