Facilitated soldering

Products07. July 2025 by Thomas Schmid - Reading Time 2 min.

Most design engineers are familiar with circuit breakers for DIN rail-, threadneck- or snap-in mounting. They are less familiar with circuit breakers with soldering pins for direct mounting onto a PCB. The major advantage: Mounting and terminal contacting is done in a single work process. This saves time and money.

Circuit breaker for PCB mounting

The printed circuit board (PCB) is one of the most important inventions of the 20th century. The Austrian, Paul Eisler, is regarded as the inventor. His “process for the production of a printed circuit” patented in Great Britain in 1943, led to modern mass production of radios and televisions just a few years later. Today, it is impossible to imagine devices and machines without printed circuit boards.

E-T-A’s recommendation: If possible, mount the overcurrent protection directly onto the circuit board. As the world market leader, E-T-A offers a versatile range of circuit breakers for PCB mounting. Here is a selection:

1410-L2

E-T-A’s 1410-L2 with lateral reset slide switch, requires less space than a closed fuse holder thanks to its space-saving dimensions of only 28 x 9 x 10 mm. A special hot wire element ensures very fast tripping. This makes it the perfect protection solution for cables and electronic components.

1410-L1 und 1410-G1

These circuit breakers have a hot wire as tripping element, however, the reset buttonis located on the top and is either designed as slide switch (L1 version) or as push button (G1 version).

104-PR

The tripping element of this circuit breaker is a high-quality strip bimetal. It provides a delayed trip curve, which makes the 104-PR the ideal overcurrent protection solution for motors and transformers. In many cases, the circuit board serves as a power distribution unit. The special advantage: Compared to temperature limiters - which must be installed close to the heat-generating loads - E-T-A’s current-carrying 104-PR circuit breaker can be positioned anywhere in the appliance or machine. This means that the mounting PCB can also be installed in any position.

808

With dimensions of only 30 x 20 x 10 mm, E-T-A’s 808 circuit breaker with soldering pins is the smallest magnetic circuit breaker in the world. Despite its small design, it has a manual release button and an integrated auxiliary circuit. Due to its fast tripping, it provides perfect protection for semi-conductors.

2215-L1

The thermal-magnetic 2215-L1 circuit breaker also has an extremely compact design. It is available with a slow, medium or fast characteristic curve, even with integrated auxiliary contact (changeover contact) upon request. This circuit breaker is typically used to protect electronic assemblies.