Back to overview

Links and downloads

Product configurator

Find the right product for your application using the product configurator.

Tasks required:

  • Power supply for the planned application
  • Number of current paths
  • Nominal current
  • Cable length

Configuration matrix

The configuration matrix can help with the secondary-side planning of your power supply unit. It describes the maximum cable lengths depending

  • on the device circuit breaker
  • on the conductor cross section
  • on the performance class of the power supply unit

The values of the cable lengths specified relate to the distance (l) from the power supply unit to the load.

Boundary parameters for the calculation:

  • CB TM1 x A SFB P device circuit breaker
  • Electromagnetic tripping
  • at the latest at 10 times the rated current
  • Ambient temperature: +20°C

The internal resistance of the device circuit breakers is taken into account. In addition to the short-circuit current, the relevant power supply unit also supplies half the nominal current for paths connected in parallel.

Description Language Updated
Configuration matrix for CB TM1 SFB device circuit breakers [PDF, 0.2 MB]
Planning assistance
German 18.06.2013
Configuration matrix for CB TM1 SFB device circuit breakers [PDF, 0.2 MB]
Planning assistance
English 18.06.2013

PHOENIX CONTACT Ltd

8240 Parkhill Drive
Milton, Ontario L9T 5V7
1-800-890-2820

This website uses cookies, by continuing to browse, you agree to our cookie policy. Read our privacy policy for more information.

Close