The Siemens SENTRON 3VA1132-4EF36-0AB0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current of 32 A at 40 °C ambient with no derating needed up to that point. The TM240 thermal-magnetic release handles overload and short-circuit protection within a single unit. Breaking capacity is the headline figure here: 121 kA at 240 V AC, stepping down to 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. That 121 kA at 240 V means this breaker can safely interrupt a fault current up to that level without rupturing — critical for high-fault-capacity service-entrance or distribution panels where available fault current is high. Insulation voltage rated 800 V. Footprint: 76.2 mm wide, 130 mm tall, 70 mm deep.
Thermal derating and power loss
Current rating holds flat at 32 A from 40 °C through 50 °C, then drops to 31 A at 55 °C and 60 °C, and 30 A at 65 °C and 70 °C. That's a 6.25% derating from 50 °C to 70 °C — predictable and linear enough to factor into a panel thermal budget. Maximum power loss is 10.6 W per pole, so total dissipation across three poles is roughly 32 W at full load. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. The storage minimum is the more restrictive shipping limit — relevant if the breaker sits in an unheated warehouse.
Auxiliary switching and configuration
This variant ships with two factory-installed high-performance auxiliary switches (designated HP). No undervoltage release, no ground-fault monitoring, no communication module, no voltage trip indicator — it's a straight thermal-magnetic breaker with basic status signaling. The supplied basic switch order code is 3VA11324EF360AA0.