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Motor Protection + Control Consultants

Sprecher + Schuh / Auer Signal offer a wide range of low voltage industrial control products designed to exceed industry standards.  Founded in 1903 by two Swiss engineers S+S continues to produce innovative control products to provide you quality, reliability and a name you can trust.

 Contactors and Relays

Sprecher + Schuh / Auer Signal’s broad line of IEC contactors combined performance and reliability is a space saving design that is well proven.

  • The most modern and flexible IEC contact available today
  • Rugged Performance in a Extremely small footprint
  • Type 1 and Type 2 Coordination
  • Mechanically Linked  (Positively Guided) Safety Rated Up to 75Hp
  • New DC Electronic Coils have Low Inrush and Low Consumption in Same Height as AC Version
  • Reversible Coil Connections for Flexibility


S+S’s Second generation of solid state overload offers leading edge technology and improved features.

  • Selectable Trip Class
  • Wide (5:1) current range
  • Jam Protection , Ground Fault and Remote Reset Modules
  • Superior Phase Fault Protection
  • Communication of Motor Status Over Ethernet IP and Profibus
  •  Integrated Web and E-Mail Server (Text Messages)


Motor Circuit Controllers

Save panel space and enhance protection and safety with the KT7 motor circuit protection.  Limiting damaging short circuit energy is what these devises are all about.  Sprecher + Schuh / Auer Signal offers the fastest trip time in the industry, substantially reducing the let through energy on a short circuit.

  • Type E Rated (Self Protected Type E Manual Combination Starter)
  • Trip Time Approaching 3/1000 of a Sec (Achieve up to 65 KAIC)
  •  Superb Thermal Overload Characteristics
  • Units for High Efficiency Motors (with Magnetic trip settings 16-20X)
  • Use as a  Manual Motor Starter and in Group Motor Applications


Disconnect Switches

Whether your application calls for a motor disconnect switch or a fusible or none fusible service entrance (UL98) disconnect,  Sprecher + Schuh / Auer Signal has just the right switch for you.

  • Compact and Reliable Motor Rated Disconnect Switches up to 315 Amps
  • Service Entrance Disconnect (Fusible and Non-Fusible) up to 400 Amps
  • New 30 A and 60 A version Complies with NFPA 79
  • Removal Fuse Carriers for Dead Front Protection During Fuse Change Out


Push Buttons and Pilot Devises

D7 pilot devises are the economical solution for high performance control and switching applications.

  • Aesthetically pleasing with a low profile and stylish design
  • Full Metal Body Option
  • Wide Choice and Maximum Flexibility
  • Selector Switches and Multi-Function Push Buttons
  • Mounting is quick, reliable and strong



Sprecher + Schuh / Auer Signal offers a full line of softstarter controllers that utilize reliable solid state electronics to soft start single and three phase induction motors.

  • Reduce Inrush and Mechanical Shock
  • Silent and smooth starting
  • Reduce wear on belt, chains and gear boxes
  • From Fraction to 1000 Hp
  • Soft Stop and Breaking Options


Enclosed Controls and Custom Panels

S+S is your go to builder for enclosed and custom motor controls.  Our knowledgeable team can design your panel for the custom applications to meet UL/CSA ATEX and CE standards.

  • 508A, ATEX, ISO 9001
  • Explosion Proof Starter and Custom Controls
  • Pump Panels
  • 100% tested
  • No Job To Small or To Big


Control Devises

Complete offering for your control panel needs

  • Stack Lights
  • Power Supplies
  • Mini Circuit Breakers (UL1077 and UL489)
  • Solid State Relays
  • Timers and Relays
  • Terminal Blocks
  • Fuse Holders

Auer Signal, founded in 1910, is a manufacturer of visual and audible signaling equipment for standard and explosion proof applications. Auer is truly your signaling solution

 Visual Signaling

  • Steady Beacons
  • Flashing Beacons
  • Strobe Beacons
  • Multicolor Beacons
  • Rotating Beacons
  • Mirror Beacons
  • LED Worklights

Visual Signal Towers

  • Modular
  • Compact
  • Half Dome
  • 30, 50, 70 and 90 mm


Audible Signaling

  • Signal Horns
  • Bells
  • Sirens
  • Multi-tone Sirens
  • Buzzers
  • Ex-proof



  • Weatherproof Phones
  • Ex-proof Telephones
  • Accessories


At Trapp Industrial Sales we are your local motor control and protection experts.  All are staff has experience to provide you the answers you are looking for.  Whether you require UL 508 support, clarification on Type E and F applications or anything in between we are here to help.  Please give us a call!

Trapp Industrial Sales Engineers have the experience and the training to help you with all of your Sprecher + Schuh / Auer Signal product line applications.

Please visit the “Meet our Reps” page to find your local contact.