3UG4825-1CA40

The SIRIUS 3UG4825-1CA40, equipped with a 3UL23 current transformer, monitors residual (leakage) current, supports IO-Link communication, has a measurement range of 10mA to 43A, operates on 24V DC power, and provides two sets of delayed switching contacts.

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Siemens SIRIUS 3UG4825-1CA40 Digital Residual Current Monitoring Relay Product Image

Product Positioning

The 3UG4825-1CA40 is a digital residual current monitoring relay from the Siemens SIRIUS 3UG4 series. It requires an external 3UL23 current transformer and supports IO-Link communication, making it suitable for ground fault monitoring applications.

Core Product Advantages and Features

Residual current monitoring

Equipped with a 3UL23 current transformer, the measurement range is 10mA to 43A, and the adjustable trip value is 30mA to 40A.

IO-Link support

Built-in IO-Link interface (COM2, 38.4kBaud) facilitates data upload and remote monitoring.

Adjustable delay time

The action delay and jump delay are adjustable from 0 to 999.9 seconds, and it also has a shutdown hysteresis function.

Simplified casing

22.5mm standard width housing, DIN rail mounting, suitable for control panels with limited space.

project	Specification
Monitoring function	Residual current (ground fault) monitoring requires a 3UL23 current transformer.
Control power supply voltage	24V DC
Measurable current range	10mA...43A
Adjustable bounce value	30mA...40A (channel-specific setting)
Measurable frequency range	16...400Hz
Output contacts	2 sets of delay switching contacts
Contact Rating	AC-15 at 250V: 3A; DC-13 at 24V: 1A
Delay time	Adjustable from 0 to 999.9 seconds, with a maximum shutdown hysteresis of 50%.
Casing width	22.5mm
Communication Interface	IO-Link (COM2, 38.4kBaud)
Protection level	IP20

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