Type: ESS30-S


60 mm
Typ ESS30-S von E-T-A: mit galvanischer Trennung; einzigartige Elektronischer Überstromschutz für DC 24 V Anwendungen

The electronic circuit protector ESS30-S with physical isolation is the globally unique electronic overcurrent protection for DC 24 V applications as a “low energy breaker”. For the use in decentralised and centralised power supply units, it meets the requirements to DIN EN 60934, to UL1077 as a Supplementary Protector and to UL 1310 as “Class2 power unit” (NEC class2). The compact device can be plugged into the terminal blocks 17plus and 18plus and into the SVS power distribution systems and ensures quick and easy installation.

New! Now also adjustable versions available!

operating voltage DC 24 V (18...30 V)
Voltage rating
  • DC 24 V
Current ratings 0.5 A
1 A
1 A/2 A adjustable
2 A
3 A
3 A/6 A adjustable
3,6 A
4 A
6 A
8 A
10 A
Number of poles 1-pole
Load disconnection with physical isolation
trip times:
short circuit: typically 150 ms...500 ms
overload: typically 500 ms
Current limitation typically 1,2 x IN
Status indication 1 LED green/orange/red: status/fault
Temperature range
Terminal design blade terminals 6.3 mm
Mounting method plug-in type,
Certificates UL 1077 DC 24 V, UL 2367 DC 24 V, UL1310 (NEC Class 2) DC 24 V, VDE IEC/EN 60934 DC 24 V


  • Automation
  • Automobile production
  • Chemical, Oil & Gas
  • Power Engineering DC 24 V


Improve Plant Production by Addressing 24VDC Switch-Mode Power Supply Issues

For most industries, the accepted norm for unplanned downtime is 5% of operating time, which represents a direct, significant loss of revenue and therefore profit. But have you ever stopped to consider the true cost of downtime?  Read the latest white paper from E-T-A to see how the integration of electronic circuit control technology can reduce the downtime of your 24VDC system designs.

Read White Paper

Utilizing Class I Div. 2 Circuit Breakers in Liquid Natural Gas Applications

An increase in the demand for energy worldwide has driven the search for alternative primary sources of energy, even to the most remote locations of the globe.  Natural gas is considered the cleanest burning fossil fuel with minimal environmental impact.   This white paper shares a real world example of how the integration of electronic circuit protection eliminates the need for widely used NEMA 7 enclosures.

Read White Paper

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