Sprecher + Schuh soft starters

PCS Series to 400 HP

Overview

The PCS Soft starter Controller is one of Sprecher + Schuh's newest solid-state controllers, with rich features at an economical price. This softstarter is specifically designed to start 3-phase motors (up to 400HP @ 460V / 500HP @ 575V), but is very compact, easy to use and DIN-rail mountable for models up to 85A. Four standard starting modes are available with the PCS Controller:

• Soft Start
• Soft Start with Selectable Kick-Start
• Current Limit Starting
• Soft Start with Soft Stop

Extending the PCS Softstarter Controllers, 108...480 Amps

The PCS product offering has been expanded from 85A to 480A (up to 400HP @ 460V). The new range provides a highly accurate and reliable device with increased intelligence in a compact footprint.

Connect to KT7 Motor Circuit Controllers for branch circuit protection.

Self Contained, Ready To Install

In one small package, PCS Controllers offer a built-in overload relay, a bypass contactor and a microprocessor controller that provides soft starting for most industrial applications. The standard Soft Start mode provides a smooth voltage ramp-up to full motor speed, while the Current Limit Starting mode limits inrush in high inertia applications. A Soft Stop feature ramps down high friction loads smoothly, eliminating sudden deceleration in these applications.

For Use Anywhere

Sprecher Schuh PCS Softstarters come in three different frame sizes. The smallest frame is from 3A...37A, the middle size is from 43A...85A and the largest frame size is 108A...135A. These units are available from 200V...600V - 50/60 Hz. This assures the devices can be used anywhere in the world.

Many convenient features

PCS Soft-starters are reliable and easy to use. 

                    Features include:

• Digital rotary switches for precise settings

• LED indication of faults

• Built-in, programmable electronic overload protection

• Selectable trip current

• Bypass contactors for increased life and heat reduction

• Over temperature protection

• Protection against phase reversal, phase imbalance, and single-phasing

• Short and open load detection

Sprecher + Schuh contactors

Series CA7 Contactors: to 60 HP

(Small dimensions as little as 45mm wide).

Providing Big Performance in Small Package

The CA7 represents the most modern and flexible IEC power contactor available today. A wide selection of ten contactors in four frame sizes covers the entire Sprecher + Schuh CA7 horsepower range (up to 60HP @ 460/575V). Six of the contactors are only 45mm wide, an extremely small footprint for such rugged performance.

Advanced safety and reliability features

The entire CA7 line features mechanically linked contacts, such that if a main power pole welds, adequate clearances exist (greater than or equal to 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.

Reversible coil provides total flexibility

When shipped, both coil connections are normally located at the top of the contactor in preparation for mounting an overload relay at the bottom. For multi-starter panels, however, the coil can be reversed. CA7 contactors can either be ordered with the coil reversed or may be easily reversed in the field.

Dual power terminals speed wiring

CA7-30 through 85 contactors are designed with two power terminals for all three poles. This simplifies power wiring of interconnected contactors in reversing, reduced voltage and two-speed applications. Simplified wiring means less labor and less cost.

Ensure reliable protection with current-limiting calibration & ambient temperature compensation.

Sprecher + Schuh has always paid particular attention to the subject of motor protection. This concern is reflected in our CT line of thermal overload relays that include many standard features not available with traditional overload protection devices. And, CT7N overload relays are designed to mount directly to the load side of Sprecher + Schuh CA7 Contactors.

Consistent and reliable protection

The consistent high quality of Sprecher + Schuh thermal overload relays is ensured by a complex current calibration procedure performed after each unit is at full operating temperature. Calibration is performed at the largest and smallest current the overload can handle. The accurate time/current characteristic curve obtained in this manner guarantees reliable motor protection every time.

Superior Class 10 characteristics

Today's T-Frame motors have less copper and iron that the old U-Frame motors that were popular when traditional Class 20 overload relays were designed. For this reason, faster Class 10 overloads like the CT Series have been recognized by many motor manufacturers as the ideal type to assure optimum protection of "T" frame motors.

Protection from single phase conditions

A unique feature not found in traditional thermal overload relays provides accelerated tripping under single phase conditions. This is accomplished with a special "differential tripping" mechanism built into CT7N.

KWIKstarters

Sprecher + Schuh offers a broad selection of pre-assembled or "build-from-stock" starters housed in either a CUL-approved Type 1, 12K enclosure or a UL-Approved Type 4, 4X, 12 enclosure. Built for convenience, space savings and economy, KWIKstarters are efficiently designed to use stock CA7 contactors and CT7K thermal overload relays or the advanced CEP7 solid state overload. Contactor and overload are either prewired and pre-mounted onto the enclosure's built-in DIN-rail or may be ordered as separate components. Ample knockouts and open terminals guarantee quick, no fuss wiring.

KWIK starters are sized for most industrial applications

These starters control motors up to 25HP @ 460V (30HP @ 575V) in an enclosure measuring only 187 x 90mm (7-3/8" x 3-1/2"). This covers over 85% of industrial motor control applications in a very compact package that can be mounted adjacent to or directly on equipment.

Designed for simplicity

The enclosure for the KWIKstarter is designed for simplicity. The START button mechanically interfaces with a special side mounted N.O. auxiliary (Cat.# CA7-PA-H10) with minimal wiring. The STOP button also mechanically interfaces with the N.C. contact on the overload relay, providing STOP and RESET functions with no additional wiring.