3UG4622-1AA30

The Siemens SIRIUS 3UG4622-1AA30 features a fixed 24V AC/DC power supply, an LCD digital current monitoring relay with a measurement range of 0.05 to 15A, adjustable hysteresis from 0.01 to 5A, IP20 protection rating, and a compact size of only 22.5mm.

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The 3UG4622-1AA30 is a Siemens SIRIUS current monitoring relay that uses 24V AC/DC as a fixed control power supply and features an LCD display for direct digital setting of operating parameters.

Core Product Advantages and Features
24V fixed power supply design
The control power supply voltage is fixed at 24V AC/DC (20.4 to 26.4V), which is suitable for direct integration into systems that already use a 24V control circuit.
LCD digital display settings
Equipped with an LCD display interface, overcurrent and undercurrent action values can be set directly on the panel, making operation intuitive.
Overcurrent and undercurrent bidirectional detection
It can simultaneously monitor single-phase overcurrent and undercurrent conditions, with adjustable hysteresis from 0.01 to 5A, reducing the probability of malfunction.
Compact 22.5mm installation width
With an external width of only 22.5mm and an IP20 protection rating, it is suitable for installation on control panels with limited space.
project Specification
Model (MLFB) 3UG4622-1AA30
Monitoring function Single-phase overcurrent/undercurrent monitoring, LCD digital setting
Current measurement range 0.05~15A (Action value adjustable from 0.05~10A)
Hysteresis Adjustable from 0.01 to 5A
Control power supply voltage 24V AC/DC (20.4~26.4V)
Output contacts 1 set of changeover contacts (CO)
Contact Rating AC-15 3A/250V, 400V
Delay time Adjustable from 0.1 to 20 seconds
Operating temperature -25°C ~ +60°C
Protection level IP20
Installation width 22.5mm, DIN rail mounting