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Product Specification Sheet HD30.13
Answers for industry.
Heavy Duty Double Throw
Safety Switch
Type VBII, 30 Amp, Type 1 (Indoor)
Standards and Ratings
• UL Listed under file #E4776
• Meets UL98 for switches and UL50
for enclosures
• Suitable for use as Transfer
Equipment on optional standby
systems as defined by Article 702
of the NEC
• Meets NEMA Standard KS-1 for
enclosed switches (Type HD)
• Meets NEC wire bending space
requirements
• Suitable for use as Service Equipment
• Rated 10,000 AIC with Class H or
200,000 AIC when used with or
protected by Class R or J fuses (fuse
ampere rating must not exceed
switch ampere rating)
Features
• Quick-make and break switching
action
• Visible blade, double break
construction
• Highly visible ON/OFF indication
• Modular design allows quick and
easy replacement of parts
• Front removable lugs which can
easily be converted to copper body
or compression type lugs
• Defeatable dual cover interlock
• All copper current carrying parts
1
• Tangential knockouts
• Handle is padlockable in OFF position
Catalog Max Shipping
Number AC Volts Description Weight (lbs)
DTF321
2
240 Fusible, 3 Pole, 3 Wire 38
DTF361
2
600 Fusible, 3 Pole, 3 Wire 38
DTNF221 240 Non-fusible, 2 Pole, 2 Wire 33
DTNF321 240 Non-fusible, 3 Pole, 3 Wire 34
DTNF361 600 Non-fusible, 3 Pole, 3 Wire 34
Catalog
240V 1Ø 240V 3Ø 480V 3Ø 600V 3Ø 250V DC
Number Std Max Std Max Std Max Std Max Std Max
DTF321 1¹⁄₂ 33 7¹⁄₂ — — — — 5 —
DTF361 1¹⁄₂ 33 7¹⁄₂ 5 15 7¹⁄₂ 20 5 —
DTNF221 — 5 — 10 — — — — — 5
DTNF321 — 5 — 10 — — — — — 5
DTNF361 — 5 — 10 — 20 — 30 — 5
General Information
Horsepower Ratings
3
1
Lugs are aluminum alloy as standard. Optional copper body lugs are available.
2
Fusible switches accept: Class H fuses as standard or Class R fuses with kit.Catalog number DTF361 also
accepts Class J fuses (move load base).
3
Dual horse ratings: Std - applies when non-time delay fuses are installed. Max - applies when time-delay
fuses are installed.
Mechanical Lug Wire Ranges (60/75°C, Cu/Al)
Description Wire Range
Line, Load #12-6 AWG (Al) or
Neutral #14-6 AWG (Cu)
Ground #14-4 AWG