ARCO Zeus A275L Single Foot Alternator, Terminal Block

The ARCO Zeus A275L Single Foot Alternator has a terminal block, for conventional 1-inch or 2-inch single-foot mountings.

Single foot comes in 1-inch and 2-inch widths, and this unit covers both conventional arrangements. That is worth checking rather than assuming, since a foot that is close but not right leaves the alternator sitting at an angle and the belt running off true.

This is the terminal block version of the single foot A275L, against the one supplied with a regulator. The terminal block handles the output connection, so the cable lugs have to suit a block rather than a stud.

Sustained high output without overheating is the design intent, using heat-shedding E-Coat or Cerakote, an external rectifier and dual cooling fans. Heat is what limits an alternator's real output, so a cooler unit delivers its rating for hours rather than derating after the first twenty minutes. Explore more marine alternators.

• Single foot in 1-inch and 2-inch widths
• A foot that is close but wrong runs the belt off true
• Terminal block version, not the regulator one
• Heat is what limits real alternator output