Rated current and thermal derating
The Siemens SENTRON 3VA1132-3EF36-0BC0 is a 3-pole molded case circuit breaker (MCCB) rated 32 A continuous at 40 °C ambient. Per the datasheet, the current rating holds at 32 A through 50 °C, then derates to 31 A at 55 °C and 60 °C, and to 30 A at 65 °C and 70 °C. That means in a warm panel — say 55 °C internal ambient — you lose 1 A of headroom per pole. The 32 A rating is the starting point; the thermal curve governs the real-world limit.
Interrupting capacity across voltages
Breaking capacity is voltage-dependent: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at both 500 V and 690 V. For a 480 V distribution panel (common in North American industrial), the relevant figure is the 440 V rating at 32 kA — that is the closest published point. The 690 V rating at 11.9 kA covers European 400/690 V systems. The rated insulation voltage is 800 V, so the breaker is insulated for the full range.
Auxiliary and release configuration
This variant ships with two auxiliary switches (HQ type) and an undervoltage release (UVR). The auxiliary switches provide status feedback — open/closed indication — for PLC or SCADA monitoring. The UVR trips the breaker when control voltage drops below the dropout threshold, which is standard for safety circuits that need to guarantee a de-energized state on power loss. No communication function or ground-fault monitoring on this order code.
Physical footprint and panel fit
Dimensions: 130 mm height, 76.2 mm width, 70 mm depth. The 70 mm depth is the dimension from the mounting surface to the front of the breaker — relevant when sizing a gland plate or enclosure depth. Width at 76.2 mm (3 inches) is standard for a 3-pole MCCB in this class; it occupies three 25.4 mm module positions on a DIN rail if the mounting adapter is used. The breaker is designed for line protection (feeders, not motor branch circuits per se), so it fits in a distribution panel as a main or sub-feed breaker.