Double Throw Safety Switches

Double Throw Safety Switch:

30–100 A Types DT, DTU (Series F) and 400-600 A Type DTU (Series A)

• UL Listed
• 30-100A and 200A, 400A, 600A 240Vac/250Vdc or 600Vac/600Vdc
• Fusible (DT) and non-fusible (DTU) switches 30 -100 A
• Non-fusible (DTU) switches 200-600 A
• NEMA Type 1, 3R, and 12 Enclosures
• NEMA Type 4/4X/5 enclosures
• Stainless Steel Type 304
• Suitable for use as service entrance equipment
• Two, Three, Four and Six Pole configurations
• Up to 200kAIR short current circuit ratings, utilizing appropriately rated Class R, J, or T fuses
• Horsepower rated for motor applications -- 350hp maximum
• Quick-make, quick-break operating mechanism
• Visible blade switches for positive "OFF" indication
• Optional viewing window allows visual verification of blade position without opening door
• Red and black handle indicates the ON (red) or OFF (black) condition of the switch (30-100A)
• Dual cover interlock prevents the cover from being opened when the switch is ON and prevents the switch from being turned ON when the cover is open
• Handle lock-off provision for multiple padlocks -- "OFF" position
• Cover can be padlock closed
• Seismically Qualified to the:
• 2010 ASCE 7
• 2012 International Building Code (IBC)
• 2013 California Building Code (CBC)
• State of California’s Office of Statewide Health Planning and  Development (OSHPD) requirements for seismic certification

Reliable performance

Long term durability

• Mechanical endurance of F series is guaranteed to exceed three times the NEMA requirements
• Enclosed operating mechanism design reduces the amount of dust and other contaminants that shorten the mechanism’s operating life.
• Galvanized Steel with E-Coat on NEMA 1, 3R and 12 Enclosures
• Meets or exceeds NEMA KS1

Efficient Installation

Operation Safety Features

• Two tone color handle clearly shows switch's status (30 - 100A Series F)
• Red ""ON""
• Black ""OFF""
• Dual Cover Interlock (30 -100A Series F and 600A Series A)

Switches are stocked and ready for delivery from our warehouses

Back up power connections

Circuit disconnect

• Service entrance equipment
• Point of load

Circuit protection (fusible switches only)

• Overload or thermal protection
• Short circuit or high fault protection

Environmental protection

Personnel protection

• From live parts
• Arcing during switching
• During maintenance of loads

Customer Locations Switch Is Typically Applied:

• Mining and Mineral
• Commercial Buildings
• Manufacturing
• Industrial Buildings
• Water Wastewater
• Healthcare Facilities
• Educational Campuses