What this 100 A 4-pole MCCB brings to the panel
The Siemens 3VA1110-3GD42-0AA0 is a SENTRON 4-pole molded case circuit breaker rated for 100 A continuous, line-protection duty, with a TM210 thermal-magnetic release. It holds full 100 A up to 50 °C ambient, then derates to 91 A at 70 °C — useful when the panel runs hot near other gear. Interrupting capacity runs from 75.6 kA at 240 V down to 11.9 kA at 690 V, so it handles high-fault service entrances on the low-voltage side and still clears moderate faults at 690 V. The 4-pole design covers three-phase plus neutral, common for North American and European distribution panels where the neutral needs switching.
Footprint and panel fit
At 70 mm deep, 101.6 mm wide, and 130 mm tall, this breaker fits standard SENTRON 3VA panel cutouts. IP40 on the front means it's fine for enclosed distribution boards but not washdown zones. The 4-pole width is the same as the 3-pole sibling — just longer — so panel layouts already gapped for a 3VA 3-pole will accept this one with no rework on the DIN rail or busbar positions.
How it compares to the 3VA1110-5ED36-0AC0
The 3VA1110-5ED36-0AC0 is the closest functional sibling — same 4-pole, same 100 A frame, same TM release family. The difference is in the interrupting rating curve and accessory options. If your panel was specced around the -5ED36 variant, this -3GD42 will drop into the same footprint and busbar layout without rewiring, but verify the interrupting capacity at your fault level matches: the -3GD42 carries 75.6 kA at 240 V versus the -5ED36's higher-end rating. For most 240 V distribution boards, the -3GD42 is a straight swap.