Yes, looks to be about that size but I doubt that you'd get rating that unless it is mounted on a heatsink rather than the back panel. The ones we used were IR, usually 26MB120. Shows the chamfer corner.I've been into electronics since I was a kid (physically, I mean). I recognized the full-wave bridge rectifier immediately, probably with a 25-amp rating.
The wires do have identification ferrules. That's how we did small wiring in our control panels. Black 1.0mm^2 with wires numbered as per the schematic.Another clue includes 4 wires/terminals (Although I'm not sure who made them all black - bad planning on the part of whoever assembled this panel, IMO.)