Energy Guide

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3-25
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Fusible and Non-Fusible Overview Double Throw Safety Switches
Class 3110 / Refer to Catalog 3100CT1602
30–100 A Types DT, DTU (Series F)
30–100 A DT, DTU (Series F)
NEMA Type 1
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Fusible (DT) and non-fusible (DTU) switches available
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Manually-operated switch suitable for use in accordance with article 702 of the NEC,
ANSI/NFPA 70
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Standards: UL 98, Type KS1, CSA, and NOM
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Modular design—switch handle, lock-plate, switch mechanism; line and load bases
are field replaceable
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UL Listed short circuit current ratings up to 200 kA (using with (fusible) or protected by
(non-fusible) Class R, J, or T fuses—see table for rating)
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Load make/break rated
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Horsepower rated
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Dual cover interlock
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May be padlocked ON (I) or OFF (O)
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Lock-off accepts up to three padlocks
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Side-opening door
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Quick make / quick break mechanism
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Meets NEMA requirements as heavy duty switch
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Field-installed electrical interlock kits
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Field-installed neutral assembly kits (2P and 3P switches)
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UL Listed as suitable for use as service equipment
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Supplied as standard for switching one load between two power sources, and may be
field-converted to switch one power source between two loads.
30 (Series T4), 200–600 A Types 82,000 and 200 A DTU
(Series E, A)
82,000 Line
NEMA Type 1
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Non-fusible
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Designed for manual transfer of one load between two power sources
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UL Listed switches are suitable for use in accordance with Article 702 of the National
Electrical Code, ANSI / NFPA 70
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All 82,000 and DTU double throw switches are continuous duty rated for their
nameplate ampere rating
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The 82,000 and DTU (Series E, A) switches are load make/break rated
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UL Listed as suitable for use as service equipment
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Horsepower rated only as footnoted
Field-Installable Accessories
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Neutral
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Electrical Interlock
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Grounding Terminals
3
SAFETY SWITCHES
9/13/2019