Product Overview
Over 100 years of design experience has produced Sprecher + Schuh’s seventh generation contactor line. Te CA7 represents the most modern and fexible power contactor available today, meeting the highest industrial application requirements.
A wide selection of 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 efciency, including high contact pressure and “bouncefree” contacts, allowing the devices to handle the high starting currents typical of modern motors.
Whether you’re designing motor circuits for use in North America, Europe or any other part of the world, all CA7 contactors have been designed and tested with respect to Type 1 and Type 2 short circuit coordination. Find out more in the CA7 Technical Information section in this chapter.
Te entire 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. Tis is a requirement in safety circuits per IEC 60947-5-1. Reliability is further assured by “crosss-stamped” auxiliary contacts, which provide multi-point reliability in low current, low voltage applications.
CA7-9E through CA7-55E are provided with DC coils that dramatically decrease wattage consumption during pull-in. Tis allows the use of smaller power supplies. Te electronic DC coil design allows the height of the contactor to be the same size as the AC version. Larger CA7 contactors are available with a two-winding DC coil that also reduces the size of the contactor as well as the hold-in values.
Please see the data sheet for specific product details.
Over 100 years of design experience has produced Sprecher + Schuh’s seventh generation contactor line. Te CA7 represents the most modern and fexible power contactor available today, meeting the highest industrial application requirements.
A wide selection of 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 efciency, including high contact pressure and “bouncefree” contacts, allowing the devices to handle the high starting currents typical of modern motors.
Whether you’re designing motor circuits for use in North America, Europe or any other part of the world, all CA7 contactors have been designed and tested with respect to Type 1 and Type 2 short circuit coordination. Find out more in the CA7 Technical Information section in this chapter.
Te entire 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. Tis is a requirement in safety circuits per IEC 60947-5-1. Reliability is further assured by “crosss-stamped” auxiliary contacts, which provide multi-point reliability in low current, low voltage applications.
CA7-9E through CA7-55E are provided with DC coils that dramatically decrease wattage consumption during pull-in. Tis allows the use of smaller power supplies. Te electronic DC coil design allows the height of the contactor to be the same size as the AC version. Larger CA7 contactors are available with a two-winding DC coil that also reduces the size of the contactor as well as the hold-in values.
Please see the data sheet for specific product details.
