Flight Crew flying Hawker 4000 aircraft reported loss of multiple electronics and avionics failures inflight.

Narrative

During Cruise Flight at FL430 the aircraft experienced multiple electronics and avionics failures. Crew responded via maintaining control of the aircraft and running the appropriate checklists and after a brief discussion we [advised ATC] and asked to divert. Checklist final item was 'land nearest suitable'.We were closest to ZZZ but due to loss of anti-icing controls and the multiple overcast freezing layers over ZZZ we asked ATC for weather at nearby airports. We chose ZZZ1 due to its proximity and higher ceilings as well as broken layers; not overcast so we could avoid icing conditions during the descent as well as the lack of significant crosswind for Runway XX.ATC vectored us to the RNAV XX approach and we landed without incident.The root cause was a loss of MAU2A (Modular Avionics Unit) due to CB failure. Significant items lost included anti-ice control; AT; AP; Spoiler Control; MCDU2; FMS1; AHRS2 and ADC2; Gear Status Indication. The aircraft was flying fine; however the computer systems were no longer able to verify the accuracy of data input so many systems were considered 'unreliable'. For example; engine anti-ice fails to on; but we have no way of knowing if they were working or not. The same for gear. We lost gear indication and despite feeling and hearing the gear deploy; we asked ZZZ1 Tower to confirm gear down while on 3 mile final. Given confirmation; we continued with the landing in lieu of a fly-by.Things that went right: The Pilot Flying did an excellent job maintaining control of the aircraft at all times; freeing me up to concentrate completely on checklists; navigation; and setting up for the approach and landing. ATC provided excellent services giving our arrival priority and providing any information we requested. One significant bonus to [advising ATC] was that ATC knew I would not be able to answer radio calls immediately. This relieved a major stress factor (distraction) in a near task saturated environment. Thank you ZZZ Center; Approach and ZZZ1 Tower! In addition; company X has done an excellent job training us for this particular situation. Aside from a dual generator failure; this particular failure may be one of the most stressful. FS ZZZ2 did an excellent job of preparing us for this exact situation.Things that went wrong: One of the things we lost was Gear Status indication. The checklist says that lack of an aural warning after gear down and flaps 35 indicates that the gear is properly deployed. In the simulator; this makes perfect sense. However; in the actual airplane on final for an actual landing; it does not feel quite as comfortable. Pilots are used to a positive indication of gear down. In this case; it was a lack of negative indication that we needed to rely on. These are not the same thing. I am not sure what the solution would be; but during the entire event - the gear situation was the one we were most uncomfortable with.In 30 years of flying; this was the first time I ever [requested priority handling]. Due to excellent assistance from ATC; excellent training; and a professional calm response from both crew members - it was a non-event.