PAC PAC-200 200 Amp Power Relay

• The Pac-200 handles 200 continuous amps and 300 amp surges for switching power sources and systems with heavy currents.
• Useful for switching power sources and systems with heavy currents

So far I have 4 of these in 4 ea. 1 year old trucks running optima D31 batteries and inverters inside, along with this isloator model to prevent load on the truck's starting battery. One truck is equipped with dual D31's for extended inverter runtime.

With 48 truck-months of usage we've had no failures or trouble of any kind, if you are interested we also wired two trucks with the ability to jumpstart themselves using this (it's rated for 300A surge). It does mean an extra wire and switch inside the cab but beats bringing the jumper cart out in the weather.

During the year of use, there have been no more emergency jump starts, no more dead trucks on monday, and the inverter systems have run fine. With the extra current from the alternator we can run the inverters (I'll admit a hodgepodge of models purchased at different times) for extended periods of time as needed to support heavy power tools to cell phone chargers.

Drivers do appreciate the "clunk" this isolator makes when engaged. The audible noise lets you know the two electrical systems are tied.

I would recommend a shunt style ampmeter if room permits.

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Install as described, No worries...Koool to hear switch clunk when you turn on accessory! Solid sounding, well made...

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You need one of these for that second battery install. Easy to install, no worries...

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When this product was first received, it was noted that the connections on top were too close together for easy connection. The high amperage (200) needs a substantial connection and it it difficult to do so with this configuration. I would have sent it back, except all the competitive units look similar. I finally designed a connection which would be reliable and not stress the connection points. The item was used for about 30 days with loads up to about 150 amps and then failed when the microwave oven was turned on. (This had been used many times before.) At that time the Inverter drew about 120 amps through this unit. I had the device for several months at that time, so it was too late to return it to the vendor and it was impossible to find the route to the manufacturer to get anything done that way. The coil appears OK, the thing makes the normal snap sound when it operates, but the contacts do not make up.

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Huge fan of the relay. Not only does it save the battery up front from dying out on me, but if the battery up front ever dies, it's a flip of a switch and boom! Jump start with no cables. Little extra wiring, but so worth it. I use it to isolate three commercial grade batteries from my optima red top up front, and it works wonders!