Terminal Lug Data for Double Throw Safety Switches

These terminal lug and conductor connection tables for double-throw safety switches used in commercial and industrial electrical systems cover multiple switch series and ampere ratings ranging from 30 A to 600 A. The tables provide wire capacity and conductor range information, terminal lug configurations, wire-bending space requirements, and optional compression lug kits, supporting installation flexibility and code-compliant electrical connections.

Terminal Lug Data for Double Throw Safety Switches

note

30–100 A switches suitable for 60 °C or 75 °C conductors. 200–600 A switches suitable for 75 °C conductors.

Terminal Lug Data for Type DT, DTU (Series F) Double Throw Safety Switches

Switch Type	Wires per Phase	NEMA Type 1, 3R, 4, 4X, 12	Optional Copper Only Lug
30–60 A Type DT, DTU (Series F)	1	12–2 Al or 14–2 Cu	12–2 Al or 14–2 Cu	C10-14, D8-14-SK, or E6-14 ^[1]	See Copper Only Lug Kits for Heavy Duty Switches and Load Side Double Lug Kits for Heavy Duty Switches for appropriate kit. Order two kits per switch.
100 A Type DT, DTU (Series F)	1	12–1/0 Al or 14–1/0 Cu	12–1/0 Al or 14–1/0 Cu	VCEL02114S1 ^[2]

Switch Type

Wires
per
Phase

NEMA Type 1, 3R, 4, 4X, 12

Optional Copper Only Lug

Wire Range Wire Bending Space
Per NEC Table 373-6
AWG/kcmil

Standard Lug
Wire Range
AWG/kcmil

Optional
Compression Lug
Field-Installed

30–60 A
Type DT, DTU
(Series F)

12–2 Al

or
14–2 Cu

12–2 Al

or
14–2 Cu

C10-14,
D8-14-SK,

or E6-14 ^[1]

See Copper Only Lug Kits for Heavy Duty Switches and Load Side Double Lug Kits for Heavy Duty Switches for appropriate kit.

Order two kits per switch.

100 A
Type DT, DTU
(Series F)

12–1/0 Al

or
14–1/0 Cu

12–1/0 Al

or
14–1/0 Cu

VCEL02114S1 ^[2]

Terminal Lug Data for Types 82,000 and for A and E-Series DTU devices

Amperes	Wires per Phase	Wire Range Wire Bending Space Per NEC Table 373-6 AWG/kcmil	Lug Wire Range AWG/kcmil	Optional Compression Lugs Field-Installed
30 A (Series T4)	1	14–8 Al/Cu	12–2 Al or 14–2 Cu	—
200	1	6–300 Al/Cu	6–300 Al/Cu	VCEL030516H1 ^[2]
400	1 or 2	1/0–600 Al/Cu or 1/0–300 Al/Cu	1/0 - 750 Al/Cu or 1/0 - 300 Al/Cu	—
600	2	250–500 Al/Cu	250–500 Al/Cu	—

Section 3: Safety Switches

Section 3: Safety Switches

Terminal Lug Data for Double Throw Safety Switches