MCCB with ETU550 — 160 A, 4-Pole Line Protection
The Siemens SENTRON 3VA2116-5JP46-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for 160 A continuous current, designed for line protection in industrial power distribution. It carries an ETU550 electronic overcurrent release, which provides adjustable trip curves and communication capability for integration into a plant-wide monitoring system. The interrupting ratings span from 187 kA at 240 V down to 3.7 kA at 690 V, giving selectivity headroom for most low-voltage switchgear.
Interrupting Capacity and Thermal Performance
At 240 V the breaker clears 187 kA; at 415 V and 440 V it holds 121 kA, and at 500 V it still manages 75.6 kA. The 690 V rating drops to 3.7 kA — a known knee on this frame size. For the panel builder: the 160 A rating is flat across 40 °C through 70 °C ambient, meaning no derating curve to calculate in a warm enclosure. Power loss at rated load is 25.5 W maximum, which the enclosure thermal design should accommodate.
Integration Notes
Dimensions are 86 mm deep, 140 mm wide, 181 mm tall. The 4-pole form factor fits standard panel-mount cutouts for SENTRON 3VA2 frames. Front IP40 protection covers the operator interface; the ETU550 allows local adjustment of trip settings and supports communication for remote monitoring. No undervoltage release or ground-fault monitoring is fitted on this variant — those are separate accessory options.