Description
The Siemens SIRIUS 3UG4513-1BR20 is a legacy phase monitoring relay designed for three-phase system protection. This device provides comprehensive monitoring functions including phase failure detection, phase sequence monitoring, and adjustable undervoltage protection. With a wide operating voltage range of 160-690V AC and fixed 20% phase asymmetry detection, it ensures reliable protection for three-phase equipment. The relay features adjustable delay time (0-20 seconds) and two changeover contacts for flexible control applications. Important Notice:This product has been phased out and is available only as a spare part. The recommended successor is the 3UG5514-1BR20, which offers improved performance and features.
Product phase-out– Legacy phase failure and sequence monitoring relay Adjustable undervoltage monitoring Phase asymmetry monitoring: 20% fixed Voltage range: 3×160 to 690V AC Frequency range: 50 to 60Hz Hysteresis: 5% fixed Adjustable delay time: 0-20 seconds 2 changeover contacts Screw terminal connections Successor Product:3UG5514-1BR20
Warranty & After-Sales
Limited availability as discontinued spare part Technical support for legacy system compatibility Successor product migration assistance
Delivery Time
Subject to availability – please inquire
Why Choose Our Store
Genuine Siemens legacy components Global supply network for obsolete parts Expertise in motor protection systems
Applications
Legacy three-phase system protection Motor protection against phase failures Phase sequence monitoring in existing installations Voltage monitoring in three-phase networks Equipment retrofit planning
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