SENTRON 3VA2 MCCB with ETU550 Trip Unit
The 4-pole configuration and electronic ETU550 trip unit make it suitable for applications requiring adjustable protection curves and communication capability.
Breaking capacity is rated at 330 kA at 240 V AC, dropping to 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V. These figures give the panel designer substantial headroom for high-fault-current scenarios typical in industrial main feeders.
Communication and Monitoring
This MCCB includes a communication function, enabling integration with higher-level energy management or SCADA systems via the SENTRON portfolio's communication modules. The ETU550 trip unit provides electronic overcurrent protection with adjustable settings, though this variant does not include a ground-fault monitoring version or undervoltage release.
Physical Dimensions and Installation
Dimensions are 181 mm height, 140 mm width, and 86 mm depth. The 4-pole width of 140 mm fits standard Siemens 3VA2 panel cutouts and busbar arrangements. No trip indicator or voltage trigger is fitted on this variant — the ETU550's electronic status is read via the communication interface.