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E-T-A Elektrotechnische Apparate GmbH

Postfach 1061, 90514 Altdorf
Industriestr. 2-8, 90518 Altdorf
Telephone +49 9187 10-776, +49 171 3335633, +49 171 3335633
Fax +49 9187 933-776

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Hall map

CARAVAN SALON 2021 hall map (Hall 13): stand A94

Fairground map

CARAVAN SALON 2021 fairground map: Hall 13

Our range of products

Product categories

  • 07  Energy supply / Electrical installations / Electrical appliances
  • 07.10  Installation material (Electrical)

Installation material (Electrical)

Our products

Product category: Installation material (Electrical)


Single-pole, thermal automotive circuit breaker with screw mounting and manual release. Reliable switching behaviour due to snap-action switching mechanism and uninfluenced free tripping.

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Product category: Installation material (Electrical)


The ESS22-T device extends the "Electronic Circuit Breakers" product group for DC 24 V applications. It is a two-pole version with galvanic isolation. The ESS22-T thus complies with the requirements of the Machinery Directive 2006/42/EC and the associated standard EN 60204-1 "Safety of machinery, Electrical equipment of machines", Paragraph

The combination of active electronic current limiting in the event of a short circuit and an overload cut-off from 1.1 x IN selectively and bipolarly protects the DC 24 V load circuits. The ESS22-T can be snapped directly onto the top-hat rail and thus offers fast and flexible mounting for groups of devices with several DC 24 V circuits supplied by switched-mode power supplies or transformer power supplies.

DC 24 V switched-mode power supplies are used very frequently in automation technology. However, in the event of an overload, they regulate the output voltage to supply all connected loads. So if a fault occurs in a single load in the system, the voltage also drops in all the other load circuits. This often results not only in an undefined fault condition, but even in a standstill of the machine or system.

This is exactly where the ESS22-T intervenes by reacting faster than the switching power supply to the overload condition. The maximum possible overcurrent is always limited to the typical 1.4 times the selected rated current. This allows capacitive loads up to 20,000 µF to be switched on, but they are only switched off in the event of an overload or short circuit. For adaptation to the load conditions, the rated current is available in fixed values from 0.5 A...10 A. Operating and fault conditions are indicated by a visual display and via signal contacts. Remote control is optionally possible via a galvanically isolated control input. The manual ON/OFF switch directly on the device allows targeted commissioning of individual load circuits.

As soon as the ESS22-T detects an overload or short-circuit in its load circuit, it blocks the load output transistor and thus interrupts the current flow in the faulty circuit; in addition, the load output is galvanically isolated on two poles by a mechanical switching element. After the fault has been rectified, the load output of the ESS22-T is reactivated manually by actuating the ON/OFF switch directly on the device or by means of the galvanically isolated reset input.

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Product category: Installation material (Electrical)


The E-T-A battery circuit breaker E-1073-...-437 enables a remotely controllable on/off switching function between battery and vehicle electrical system. In addition, the E-T-A battery circuit breaker protects the vehicle electrical system, the battery and the vehicle wiring against overload and short circuit. The battery and the vehicle electrical system are disconnected if the battery's polarity is reversed. The battery is also protected against deep discharge by the undervoltage monitoring.

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About us

Company portrait

Every E-T-A product contains competence, know-how and decades of reliability. At the same time, our focus is always on one thing: E-T-A products protect lives and values.

Because with everything we do, with every single device and system we deliver, we protect our customers and their buyers and users from the dangerous consequences of overcurrent and short circuits. This is a task we take great pride in.