Support / FAQs / About techtown

Home Forums General Rocker switch on VHFA18 keep melting

  • Rocker switch on VHFA18 keep melting

    Posted by Anonymous on May 7, 2024 at 1:50 pm

    I have a VHFA18 heated holding cabinet , have gone thru several rocker switches that melt down anywhere from 2 days to 3 mo. Solutions?

    fixbear replied 1 month, 1 week ago 3 Members · 2 Replies
  • 2 Replies
  • Tito

    May 7, 2024 at 2:37 pm

    Are you Using an OEM switch? If not did you compare the amp rating on the switches? I have had this happen on Vulcan, cres core and a few other proofers/holding cabinets. Usually its the wrong switch or the wires and connectors need to be replaced.

  • fixbear

    May 9, 2024 at 1:16 pm

    Holding Cabinets have both a heating element and a humidification element. As well as circulating fans. So it will be in the 1500 to 1800 watt range. That means you will be over 15 amps if your power is below 115 volts. So it will need a 20 amp switch. (always rate at 80% load) But the secondary problem is resistance. This makes heat at the terminal that then transfers into the switch. That means you need to replace the spade connectors and maybe cut back the wires to bright copper. But also, use a good crimper and high current quality terminals. AMP makes good ones. Generally, if they have a Mil Spec, you’ll be ok. The market is flooded with garbage crimp terminals.

    Quality crimpers start at about $80 for reference.

Log in to reply.