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Specifications:
Max. Current: 175A
Voltage Range: 600V
Wire Size Range: 1/0 AWG
Terminal Pin Width: 0.35 in
Voltage Current: rated at 600 volt DC or AC
Contacts material: copper silver
Package Includes:
2 x 175 Amp housing
4 x terminals
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Reviewed in the United States on February 23, 2025
I turned an APC SMT1500 into an SMT1500XL! Ok, there are no SMT1500XLs but there used to be APC XL UPS' using SUA24XLBPs and I have three. Installed this Y splitter into the UPS and used one side for the internal battery and the other through an insulated hole (made a ~1/2" hole with tape on the edges) out the back to connect to the battery packs (BPs). Note it can take the current - max load of SMT1500 plus UPS internal loads consumes ~1000W while on battery. At 24 VDC the max current is 42.6A. These are 50A plugs and 40A (when warm and a UPS gets warm) cables, similar to the cables in the UPS itself . The nice part is the battery connect/disconnect (triangular plug in the back) works in isolating all batteries, even the BPs. You must use the grey connectors because with APC's setup, they are the 24 VDC batteries the UPS needs. The Anderson plugs to the splitter are crammed in the space front of the transformer but it only gets warm in my experience and there is a fan. The UPS firmware doesn't have configuration input asking for the amount of BPs connected like real XLs but once a runtime calibration is run and passed, the firmware can predict runtime accurately enough. With Network Monitoring Cards (NMC2 - AP9630, AP9631) Smart cards being old but still a good, cheap thing, you can monitor your UPS through a wired network. I suggest updating all firmware, three in the NMC2, one in the UPS. Imagine a 2 step per half cycle inverter UPS now with lots of battery storage and web monitoring (I never trust the cloud) for about $150 used (about $600 new!) which makes it a bargain!Of course your warranty is negated but in old units, who still has one? A little secret of mine, semiconductors last longer than batteries so don't immediately buy a new UPS if the batteries go. Another reason to buy a used UPS. I have a 25 year old UPS on it's fourth set of batteries. And FYI, I used to work for APC with Smart-UPS so I know a thing or two. :]
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