Thermal-magnetic protection with a width of just 8 mm

(See Phoenix Contact at Machine Building North, 13 May 2026, on stand 23)

The thermal-magnetic circuit breakers have been specially developed for industrial applications with high inrush currents and, with their narrow design of just 8 mm, save a considerable amount of space in the control cabinet. The entire PTCB TM series can be bridged to the Clipline complete terminal block range and enables intuitive integration into existing applications.

The circuit breakers are available in finely graduated nominal currents from 0.5 A to 16 A and cover a wide range of applications with the characteristic curves F2 and M1. These applications range from sensitive electronic components right through to power-intensive loads such as motors and transformers.

One special feature is the alignable current monitoring with adjustable signalling threshold, which provides transparency on the actual load status - both locally and via remote signalling. The simple PLC integration via digital outputs supports consistent system diagnostics and increases system availability. The circuit breakers are operated using an intuitive tilting lever that clearly visualises the switching status - even when the power is off. This reduces the amount of training required and minimises operating errors.

With the launch of the PTCB TM series, Phoenix Contact is underlining its expertise in the development of holistic solutions for electrification, automation, and system integration. The new product family complements the existing portfolio with robust, space-saving, and intelligent protective components for state-of-the-arts control cabinet concepts.