Innovative Tmax® XT Molded Case Circuit Breakers from ABB

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The most cost effective, innovative, and productive molded case circuit breakers in the market. These breakers are available up to 250A and come it two categories. The Tmax XT1 & XT3 high performance 480V design with thermal magnetic trip unit makes them the perfect cost savings solution over any 600V rated breaker. Tmax XT2 & XT4 offer advanced features needed for robust applications with interrupt ratings up to 200kA @ 480V AC and available with electronic trip units, all in a compact size. All Tmax XT molded case circuit breakers offer a full line of electronic accessories which install with minimal tools and hardware, they just snap in place.
Cost effective - XT1 & XT3
Innovative - XT2 & XT4
Productive - Across the line!

[@offgridd]

Great devices! Purchased a XT4 with thermal and electromagnetic trip unit, installed the shunt trip coil and closed the case.
All neatly explained, kudo's!
Maybe kind of stupid question: How do I arm (switch on) this XT4 unit?
Getting it in the test mode: no problem.
The XT4 unit doesn't allow me to arm it however.
Should I remove a safety/transport component first to arm the unit?
Looking out to installing this device to protect my 48V 200A solar batteries if anything in the system goes wrong but I can't find the documentation how to commission this breaker...
Any help or tips are highly appreciated!

[@mikeromadin8744]

This breaker plastic parts are extremely fragile and mechanically unreliable. A brand new XT2 63A breaker just fell apart. On/Off handle snapped with bare hand, auxiliary contacts bracket broke off and there is no reliable position indication. I expect at least some quality from device which costs 700 Eur.