What is a unifrog turnout?

A unifrog turnout can perform as an electrofrog or an insulfrog turnout, that means that there is no longer a need for two products.

A unifrog turnout works by having a metal frog, but the frog is isolated when in its default setting, this means that out-of-the-box the turnout will behave as a standard insulfrog turnout. However, the turnout comes with pigtails attached should you wish to electrify the frog to make it an electrofrog turnout.

A unifrog turnout has the added advantage of point blades powered by a fixed connection rather than relying on contact with the stock rail (which can become dirty and unreliable after time). Unfortunately that means unifrog turnouts will not isolate a section of track, a problem that can be easily overcome by either severing the point blade's power-feed or installing an isolating-track after the turnout.

Peco unifrog points are identified by the letter U in their part number. For instance ST-U750 is a unifrog turnout.