Contactor Upgraded w/ SureSwitch
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- เผยแพร่เมื่อ 11 ก.ย. 2024
- In this unboxing video w/ SureSwitch, Bryan gives us a look at the Emerson White-Rodgers SureSwitch (49M11-843) and explains why this is a contactor upgraded. He also shows us what the multi-volt contactor comes with and how it works.
The multi-voltage nature of the SureSwitch allows it to be used as a contactor for 24v, 120v, 208v, and 240v applications. So, the SureSwitch can be used for a wide range of residential, commercial, and refrigeration equipment. It has a 1+ pole connection, meaning it has one contact and one connect-through pole.
The SureSwitch has up to 5x the life expectancy of a typical contactor, partially because it has a sealed switch that prevents insects from getting inside. It also has integrated compressor protection for conditions like brownouts and short cycles, and it can replace many types of OEM contactors.
The SureSwitch comes with a sticker that you can place on the electrical panel. This sticker contains guides for equipment testing and flash codes. It primarily exists to notify future technicians that the contactor is NOT an OEM type. “Load out” and “line in” are clearly indicated on the contactor out of the box. The control coil comes with different connections based on the line voltage, mounting screws, and a terminal multiplier flag terminal (for multiple connections). The SureSwitch has a random start delay to prevent current spikes in applications with multiple SureSwitch contactors (such as multi-family residences).
You can run a 5-second compression test by pressing the “test” button for one second. To get an idea of the cycle count, press and hold the “count” button. Compared to a regular contactor, the line and load connections are relatively close together (as opposed to on opposite sides).
Read all the tech tips, take the quizzes, and find our handy calculators at www.hvacrschoo....
Great product. Proved reliable in multiple installations, and completely silent.
You did not mention the feature that it times the snap on at the middle of the a/c wave when there is zero potental across the point thus elemination arcs, metal transfer, and future restance.
Good mention. No more pitted contacts
I like that it's a "no ant" sealed contactor. great job!
This makes it easier than all the cycle timers and under voltage sensors I use to add to units I had at the hospitals I worked at.
Our company been using them for the past two years. They're great. No issues so far.
The SureSwitch works great. I replaced my contactor with the SureSwitch. I didn't have an ant problem but there are plenty of ants near the outside unit. The SureSwitch has a quieter operation than a traditional contactor. The buzz that sometimes happens from the electric coil is eliminated. Good for bedrooms nearby. I use mine on a heat pump. I disabled the delay function as it will interfere with the defrost cycling in heat mode. I left brown out protection on. SureSwitch includes contacts for a crankcase heater which is excellent. Worth the investment for longevity IMHO. Thanks for the video @HVAC School
Great video Bryan, love the content!!
Interesting and most useful as well as practical a must carry and i like the multi voltage coil a sure winner.
oh is a letter, zero is a number!
If it keeps the Copeland scrolls from running in reverse when the power blinks, totally worth it. Never had so many calls with customers with recent installs with the compressor being "noisy" this year.
Hello, what you mean running in reverse when the power blinks?
@@johnconnor7501 If there is a brief power outage (like a fraction of a second) the high pressure can make the scroll move backwards for that one bit. When power is re-energized the motor runs in reverse. This is on single phase compressors.
@@swainer8014 wow! Didn’t know that. That seems like a huge design flaw to me.
@@johnconnor7501 Thankfully it is rare but it does occasionally happen. This scroll design is actually a very good one. it's just been aggravating this summer with the high power demands and the electrical grids being a little crabby.
Great video, Appreciate all you do.
Would love to see you do a video on how a Daiken Quaternity ductless unit splits the coil and heats and cools simultaneously for dehumidification. Love your videos, Thanks
I’ve seen a few of these. I always wondered how u can manually run the system with this
I like that contact or I'm going to purchase one for my AC system it's a very good investment I believe thanks for the video..👍
Top notch 👍🏻
They also make a product called core sense, for copland scroll compressors. I put one on my trane heat pump.
Yes I know this on hvac know it all channel they are great
What about the heater that goes around a compressor? You know when the compressors off not running to keep the compressor warm so the refrigerant doesn’t migrate in that area to flood out the compressor if that becomes a coldest point.
Add a normally closed contact with a 110 coil . Use the leg this still switches to the contractor coil . Simple mechanical thermostat in line , the unstitched load to the other leg of the heater if it is a 220 band or only the one switched line if 120.
@@Garyganeu No need, the SureSwitch has separate terminals for a crankcase heater.
Yes, the SureSwitch has terminals to support a crankcase heater. I use the belly band heater on mine.
There is a crankcase heater terminal on the sureswitch
I wonder if they make a 3-phase contactor like this? That would be nice for larger commercial applications.
I'm constantly replacing pitted contactors in some of my Data Center CRAH's.
Converting a 2 pole contactor gets tricky. I spent hours on a roof trying to figure that shit out. (Not all units are wired as the diagram shows).
Off the top of your head, do they make a 3-phase version of this contractor?
Pretty sure its single phase only.
Well done
These have been available for a few year and haven't taken off like they really wanted them too. Has anyone seen them in new units?
I switched from residential to commercial, but this is the first time I'm seeing them.
Any advantage using this with a soft start?
It does it's own version of a soft start by starting in the middle of the ac wave. A soft start would be redundant.
@@coolhandrob8893 Totally wrong. The contactor does start in the middle of the AC sine wave where voltage is near zero to minimize contact arcing, but once latched an added soft start would ramp up voltage and current in slower manner getting the system up to full speed thus reducing the locked rotor amps that would occur in a traditional system. Using only the sure switch, once the latching occurs, it would still pull the standard number of amps close to the rated locked rotor amps to get the compressor going.
@@TheModelmaker123 So from your first sentence I'm not "totally wrong" You agreed with what I said and then simply described how a soft start works. Essentially adding nothing to the discussion. It wouldn't hurt to add a soft start but you may want to look up the word "redundant".
Those are great investment
Do they have a 3 pole contactor or just single?
Would this work with a Micro-Air soft start?
👍
Don’t like the one through contact.
But it is good temporary “rescue”, until come back with OEM deal.
Many OEM contactors are 1 Plus or single pole, just like this.
These make pump downs annoying
Pumpdowns are on the way out anyways in residential for a couple reasons. For one, you really shouldn't be pumping down with scroll compressors anyways. Two, you CAN'T pump down with microchannel coils. The first of which are pretty much ubiquitous, and the latter of which is becoming unfortunately more common by the day.
“Ubiquitous” : Found Everywhere.
For those of us that talk normal.
It's a fucking relay .
Not for $50.
I will pass. Only for emergency use only. Waste of circuit boards if you ask me. Puting a dress on a pig.
If it last twice as long then it pays for itself. 5x the contact area and not exposed to the weather? I won't be using them on my personal equipment, but if they can prove it last longer definitely worth it in humid areas. Heck down near the sea contactors go out like crazy.
Sounds like one of those upgrades I was pushed to sell doing residential