CA7-9-01-240

A wide selection of eleven contactors in four frame sizes covers the entire CA7 horsepower range (up to 75HP @ 460/575V). Six of the contactors are only 45mm wide, an extremely small footprint for such rugged performance. A number of design features account for this efficiency, including high contact pressure and “bouncefree” contacts, allowing the devices to handle the high starting currents typical of modern motors.

The entire Sprecher and Schuh CA7 line features mechanically linked contacts, sometimes referred to as “positively guided contacts” or “force guided contacts”. If a main power pole welds, adequate clearances exist (≥0.3mm) to ensure that the auxiliary contacts do not change state when coil power is removed and the device tries to open. This is a requirement in safety circuits per IEC 60947-5-1. Reliability is further assured by “crossstamped” auxiliary contacts, which provide multi-point reliability in low current, low voltage applications.