UAt, UASt, UASNCt three-phase voltage monitor relays with adjustable breaking delay
Complex protection of the loads (mainly motors), connected to three-phase network. Their operation does not require neutral conductor.
A – phase-asimmetry
S – phase sequence
N – line voltage increase
C – line voltage decrease
The operating values can be set by turn-knob.
The type-mark begins with letter U and it consists the versions of protection:
Degree of protection: IP 20
Dimensions: 50×72×111 mm
Mounting: to 35 mm rail or 2 pcs M4 screws
Relevant standard: EN 61010