MCCB for panel builders — 20 A, 3-pole, TM210 release
The Siemens SENTRON 3VA1120-4ED36-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 20 A continuous current across the 40 °C to 55 °C ambient range, derating to 19 A at 60–70 °C. Breaking capacity is 121 kA at 240 VAC, 75.6 kA at 415 VAC, 52.5 kA at 440 VAC, and 11.9 kA at both 500 VAC and 690 VAC. The 70 mm depth, 76.2 mm width, and 130 mm height fit standard SENTRON 3VA panel cutouts and busbar arrangements.
Sourcing and lifecycle — active, quoted to order
Maximum power loss is 12 W, which factors into panel thermal budgeting when grouping multiple breakers in a confined enclosure.
The 3-pole design connects to three-phase busbars; line and load lugs accept copper or aluminum conductors per the terminal specifications in the device manual. If you need shunt trip, UVR, or auxiliary contacts, those are add-on accessories in the 3VA family.