My experience with Schneider has been a mixed bag; I interned with them and had a great experience, but I'm disappointed with their new recruiting strategy.
I interviewed once on-site at the Costa Mesa location for a technical (though non-electrical and non-engineering) internship and had a very positive experience. I was invited a few days after applying and received an offer the following day; everything was very prompt and professional. Moreover, I thoroughly enjoyed my summer there, and the location was full of wonderful people.
After my internship I was invited to a "final-round" general interview for full-time positions, and this is where I was disappointed. The event itself is actually quite enjoyable; they'll put you (and the other hundred and some-odd candidates) up in a nice hotel and put you through a two-day process where you learn about the company, tour a facility, and (at some point) interview with a couple managers. The questions they'll ask are 100% behavioral, which is to be expected since, because you won't know which position you're interviewing for (and the interviewers may not have any expertise in your particular field of expertise anyway), technical questions will be off the table. Which brings me to my next point...
Their system that they're trying out is to simply recruit people that "fit" into the company and match them into spots accordingly. I heard from several reliable places that the majority of said spots were sales jobs, which is probably a big part of why they're running things like this now; it makes it easy to get a bunch of business/marketing majors in the same place (to whom they can lob offers for inside sales jobs) while simultaneously allowing them to be very selective with the few engineering and analytic roles that are open.
If you're invited to a final round interview, be aware that: A. If you're a business major or something like it, you'd be right guess that Schneider is a peculiar place for you to work, and consequently it's likely anything they offer you will have "sales" in the title, or B. If you're an engineer, you're probably up against some stiff competition from all around the country for a very limited number of spots.