160 A MCCB with TM210 trip — what the ratings mean for your panel
The Siemens SENTRON 3VA1150-5ED32-0DA0 is a 4-pole molded case circuit breaker rated for line protection in distribution panels. Its 160 A continuous current (Iu) holds through 50 °C ambient without derating; at 70 °C it still carries 150 A, so the thermal curve stays usable in a warm enclosure. The TM210 overcurrent release is a thermal-magnetic design — thermal for overloads, magnetic for short-circuits — with a fixed magnetic trip threshold that coordinates with downstream branch breakers. Interrupting capacity is 76 kA at 240 VAC, 53 kA at 415 VAC, and 32 kA at 440 VAC — numbers that matter for SCCR compliance on the line side of a motor control center or switchboard. At 500 V and 690 V the rating drops to 5 kA, so this frame is best applied in 240–480 V systems where the available fault current is known. The breaker includes an undervoltage release (UVR) as the auxiliary release design — it will trip if control voltage drops below a set threshold, which is useful for safety interlock or emergency-stop circuits that need to drop the main breaker on loss of control power. The integrated auxiliary trip order code is 3VA9608-0BB25 if you need a spare or replacement coil module.
Panel fit and integration notes
Height is 130 mm, width is 4 in — standard for a 160 A frame in the 3VA family. The front face carries an IP40 rating, meaning it is protected against tools and wires >1 mm but not against water ingress; mount inside a panel or enclosure that provides the overall IP rating. The 4-pole configuration covers three-phase plus neutral switching, common for main breaker or feeder applications in 3-phase 4-wire systems. No auxiliary contact version is fitted from the factory, so if you need status feedback you will add a separate auxiliary switch block.
Selectivity and coordination — the TM210 trip curve
The TM210 designation indicates a specific thermal-magnetic curve: thermal pickup at 160 A (1× Iu), magnetic pickup at 10× Iu (1600 A) for instantaneous short-circuit protection. This is a standard distribution curve that coordinates well with downstream 15–100 A branch breakers in a selective coordination study. The rated insulation voltage (Ui) is 800 V, so the breaker can be applied in 690 V systems where the interrupting capacity at that voltage is respected.