SENTRON 3VA1132-5GE46-0AA0 — 32 A MCCB with TM220 Release
The Siemens SENTRON 3VA1132-5GE46-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated at 32 A continuous, designed for line protection in distribution panels. Its TM220 thermal-magnetic release provides fixed overload and short-circuit protection without adjustable trip settings — a straightforward choice for standard feeder or branch circuits where coordination studies are already locked. Breaking capacity is the headline spec here: 187 kA at 240 V AC, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 500 V and 690 V. That 187 kA at 240 V is exceptionally high for a 32 A frame — it means this breaker can be applied on high-fault utility services or large transformer secondaries without cascading upstream. At 415 V, the 121 kA rating covers most industrial switchboards in 400 V class networks. Thermal derating is minimal: the breaker holds full 32 A up to 50 °C ambient, then drops only 1 A per 5 °C step to 30 A at 70 °C. That gives panel builders headroom in warm enclosures without oversizing the frame.
Sourcing & Lifecycle — Active Production
Rated insulation voltage is 800 V, and the front face carries IP40 protection — suitable for enclosed panel mounting where the breaker is not exposed to dust or moisture ingress.
Integration — Panel Fit and Wiring
Dimensions are 101.6 mm wide (4 in), 130 mm tall, and 70 mm deep — a standard 4-pole MCCB footprint that fits most Siemens SENTRON distribution boards and third-party enclosures with DIN-rail or screw-mount adapters. Power loss at rated current is 10.6 W, which should be factored into enclosure thermal calculations for multi-breaker assemblies. No undervoltage release, no shunt trip, no communication function, and no ground-fault monitoring on this variant — it is a plain thermal-magnetic breaker for basic overcurrent protection. If auxiliary signaling or remote tripping is needed, a different 3VA variant or external accessories are required.