Miniature Overvoltage Limiter for 24V DC Power Line

SUG-24VDC, Overvoltage limiter for 24V DC power line in a miniature housing, surge protection for power supplies and industrial automation devices powered by 24V DC voltage

SUG-24VDC is a miniature surge protector used to protect electronic devices powered by 24V DC against atmospheric discharges, voltage surges, and sudden increases in voltage that may occur due to damage to the power supply.

The ability to transmit up to 3A of current allows for use in most industrial automation installations, building automation, and property protection systems.

High-quality window clamps with high current load limit the risk of damage during large shock impulses and momentary current overloads. Thanks to its small size, it does not take up much space and can be hidden in small enclosures or electrical boxes.

The device has 2 protected power supply tracks and a protected screen circuit. This solution can be used in installations where it is necessary to shield the power supply from electromagnetic interference.

The product is recommended for installation at the boundary between LPZ0 and LPZ1 zones or higher. It can only be used for transmitting 24V DC voltage, without any AC component - for example, for fast data transmission. It is connected between the power source (power supply, battery) and the receiving device.

24VDC power supply protection

Simplified internal diagram.

 

To ensure proper surge protection, it is recommended to use limiters at both ends of the power line and properly ground them.

 

24VDC Power Line Protection Method

Proper use of the product for protection of shielded 24V DC power line.

 

Short technical specification

PARAMETER NAME
VALUE
Number of protected channels 3
Input / output connector
Screw
DC rated voltage (Un)
24V
Maximum DC voltage (Uc)
27V
Maximum AC voltage (Uc) 19V
Nominal current (In)
3A
C1: Line-line discharge current 8/20µs (In)
0.25kA
C2: Line-ground discharge current 8/20µs (In) 10kA
C2: Maximum line-ground discharge current 8/20µs (Imax) 20kA
D1: Maximum lightning current 10/350µs (Iimp)
3.5kA
Protection level 1kV/μs (line-line) Up 40V DC
Series resistance
~70mΩ / line
Dimensions 57 x 32 x 28 (mm)
Mounting method Freestanding housing
Grounding method
Wire
Housing tightness IP20
Operating temperature -40ºC~80ºC