Isolation and Reversing Switched
Our Isolation Switches allow safe disconnecting of a motor or other device for service or other use.  The Reversing Switches allow controlled reversing of motors, etc. by changing the power phases.  They are heavy-duty devices used primarily for mining applications.  They are designed for low maintenance, long operating life and have low operating torque.  They have flame retardant, non-tracking insulation and all current carrying parts are of silver plated copper.  Ratings on Isolation Switches are 600 Ampers at 5000 VAC.  Reversing Switches are rates at 400 Amps at 1000 VAC and 1000 Amps at 2400 VAC.  Pre-opening de-energizing interlocks and auxiliary contacts are available options.

Centrifugal Switches
Our Wheel Type Centrifugal Switches are designed for use on belt conveyors or similar applications.  The switches help prevent slippage and belt fires by automatically shutting off motors when a belt jams.  They operate on either AC or DC power and can operate in forward or reverse direction.  When connected in series the can sequence start belts and trip speeds can be adjusted in the field with only a screwdriver.  Our Wheel Type Centrifugal Switch is compact and easy to mount and is available in two configurations, both with a rugged drive wheel, a Dust-tight or MSHA enclosure, and an adjustable speed range from 50 FPM to 1880 FPM.

Pushbutton Switches
Our Pushbutton Switches, used for various applications including “Emergency Stop”, are MSHA approved for explosion-proof equipment use in hostile environments where gaseous or other hazardous elements may be present.  They are electrically rated up to 20 A at 600 VAC and are available with various N.O. and N.C., maintained or momentary contact configurations.  The switches are available with a maximum of four glands in various sizes and configurations.  The standard housings are aluminum, but are available in bronze for special applications  Sealed contacts are available for use in Intrinstcally Safe circuits.

Pull Cord Switches
SMC’s Pull Cord Switches are generally uses along conveyor belt lines to allow stopping from any position and are available for both explosion-proof or dust-tight applications.  The explosion -proof enclosure is MSHA approved for operation in hostile environments where there are gaseous or other hazardous elements present.  The switches have normally closed contacts at open when pulled and two directional pull allows coverage of long belt lengths.  Mechanical lockout prevents accidental start-up as they must be manually reset and the switches provide visual indication of a trip condition.  They are available with one or two glands and the contacts are rated at up to 20 A at 600 VAC as either SPDT or DPDT.  Sealed contacts are available for use in Intrinsically safe circuits.

Wobble Switches
Our Dust-tight or MSHA approved Wobble Switches are used where a quick opening switch can be tripped by physical contact.  A typical application is alongside a conveyor belt to shut down the line if the spring mounted shaft is tripped by belt alignment, too large loads, belt sagging. ect.  These switches have one N.O. and one N.C. contact with a rating of 10 A at 600 VAC: they can handle 1/2 horsepower at 120 VAC and 1 horsepower at 240 VAC.  They come with two rubber cord grips, an 18” contact hose, a maximum of two glands, and the straight through wiring allows easy installation.
 
 

Lever Action, Low Voltage:
Provide quick connect/disconnect of AC or DC line or switchgear from equipment or machinery.  Our low voltage, non-explosive proof connectors are available in models rated up to 1200A/600 VDC and 800A/1000 VAC and wire sizes up to 500 MCM, with 300 A and 600 A being the most common.  The housings are built of rugged cast aluminum and they are compatible with other existing connectors.  SMC’s Low Voltage Connectors are available as a plug or receptacle type and line or gear mounted.  They are supplies in various contact configurations, all of which are designed to provide a ground circuit that makes first and breaks last and control or pilot contacts that make last and break first.  Special keying is available to control interchangeability.

600V “B” Series
1000V “C & D” Series
2300V “E” Series
SMC’s explosion proof  (X/P) connectors are approved by MSHA and PA.  They are rated up to 600 VAC, 60 A, and #6 cable sizes for the “B”; 1000 VAC, 200A and 1/0 cable sizes for the “C”; 1000 VAC 400 A, and 350 MCM cable  sizes for the “D” and 2300 VAC, 400 A, and 350 MCM cable sizes for the “E” Series.  The are available as a plug or receptacle type, with male or female pins, and as line or gear mounted.  To assure safe operation, the ground pin makes firs and the pilot pin makes last.  Brass construction means inherent strength, durability, corrosion resistance, and non-arcing characteristics.  Our molded fiberglas, track resistant polyester, high impact insulators provide superior dielectric strength and Beryllium alloy MULTI-LAM® female contacts assure high conductivity

5000V “F” Series:
Available in either “open” (non-explosive proof) or explosion proof models, the X/P versions are approved by both MSHA and PA.  They are rated up to 5000 VAC (specify 1 KV, 2.3 KV or 5 KV), 500 A, and for cable sizes up to 500 MCM.  These connectors are available as a plug or receptacle type, with male or female pins, and as line or gear mounted to assure safe operation, the ground circuit makes first and the pilot pin makes last.  The anodized aluminum housing is larger than comparable connectors to make cable installation much easier and the reversible, insulated strain clamp accepts various cable sizes to reduce the need for stocking multiple parts.  Our molded fiberglass, track resistant polyester, high impact insulators provide superior dielectric strength.  Special keying is available for specific applications.

15000 “G” Series:
SMC’s three-phase, high-voltage connectors are rated up to 15,000 VAC, and cable sizes up to 5000 MCM.  They are available with Standard or Quick-Lock threads, as a plug or receptacle type, with male or female pins, and as lone or gear mounted.  The ground circuit makes first and breaks last as required in mining regulations.  The aluminum housing is lightweight and rugged and it features a one-piece, rigid non -breakable high track resistant, molded EPDM insulator.  Shield terminations use stress relieving instead of bulky stress cones and EZ pot insulating and sealing compound (easily applied or removed) is available.

Glands Kits
SMC offers a compresenive range of glands kits for use with various connectors and many other type of products with a choice of straight, 90°, or bellmouth hose tupec\s in either brass or aluminum.  Tube sizes are from 1/2” ro 3” for thread sizes from 11/8” - 12 to 31/4” - 12.  Kits are available for cable sizes up to 250MCM and with either 3/8” of 1/2” packing.  These components come in either removable or weld in configerations.