Double-Throw Safety Switches

30-100 A Types DT, DTU (Series F)


30–100 A DT, DTU (Series F) Type 1

Fusible (DT) and non-fusible (DTU) switches available
Manual transfer of a load between two power sources (or one power source between two loads on series A, F DT & DTU only)
Standards: UL 98, Type KS1, CSA C22.2 No. 4
Modular design–switch handle, lock-plate, switch mechanism; line and load bases are field replaceable.
Load make/break rated
Horsepower rated
Dual cover interlock
May be padlocked ON (I) or OFF (O)
Lock-off accepts up to three padlocks
Padlock provisions in the center “OFF” position.
Padlock provisions in the “ON” positions
Side-opening door
Quick make / quick break mechanism
Meets NEMA requirements as heavy duty switch
Field-installed electrical interlock kits
Field-installed neutral assembly kits (Two–pole and three–pole switches)
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 Type 1

Non-fusible
Designed for manual transfer of one load between two power sources
82,000 and DTU double throw switches are continuous duty rated for their nameplate ampere rating.
The 82,000 and DTU (Series E, A) switches are load make/break rated
Horsepower rated only as footnoted.

Field-Installable Accessories

Neutral
Interlock
Grounding Terminals

Double–Throw Fusible and Non-Fusible 240 Vac

Double Throw–Fusible and Non-Fusible 240 Vac, Two-Pole and Three-Pole and Four-Pole

System	Amperes	Series	Type 1	Type 3R	Type 12	Horsepower Ratings* *
						240 Vac				250 Vdc*
						Std.		Max		Std.	Max.
						1Ø	3Ø	1Ø	3Ø	Std.	Max.
Fusible Two–Pole, 240 Vac–250 Vdc
	100	F	DT223	DT223RB	–	7-1/2	15*	15	30*	–	20
Non-Fusible Two–Pole, 240 Vac
	30	T4	C92251 240 Vac only, not Vdc rated.* *	–	–	–	–	–	–	–	–
	200	E	–	DTU224NRB240 Vac only, not Vdc rated.* *	–	15	–	–	–	–	–
	400	A	DTU225240 Vac only, not Vdc rated.*	DTU225R240 Vac only, not Vdc rated.*	–	–	–	–	–	50	–
	60	F	DTU222	–	–	–	–	10	15	–	10
	100	F	DTU223	DTU223RB	–	–	–	15	–	–	20
Fusible Three–Pole, 240 Vac–250 Vdc
	30	F	–	DT321RB	–	1.5Use outer switching poles.*	3*	3Use outer switching poles.*	7-1/2*	–	5
	60		DT322	DT322RB	–	3Use outer switching poles.*	7-1/2*	10Use outer switching poles.*	15*	–	10
	100		DT323	DT323RB	–	7-1/2Use outer switching poles.*	15*	15Use outer switching poles.*	30*	–	20
Non-Fusible Three–Pole, 240 Vac–250 Vdc
	30	F	DTU321	–	–	–	3	5Use outer switching poles.*	10*	–	5
	60		DTU322	–	–	–	–	10Use outer switching poles.*	15*	–	10
	100		DTU323	DTU323RB	–	–	–	15Use outer switching poles.*	–	–	20
	30	T4	C92351240 Vac only, not Vdc rated.* *	–	–	–	–	–	–	–	–
	200	E	DTU324N240 Vac only, not Vdc rated.* Neutral included with device.*	DTU324NRB240 Vac only, not Vdc rated.* *	H82354240 Vac only, not Vdc rated.*	–	15	–	–	–	–
	400	A	DTU325	DTU325R	–	–	125	–	–	50	–
	600	A	DTU326	DTU326R	–	–	125	–	–	50	–
Non-Fusible Four–Pole, 240 Vac
	600	A	DTU426	DTU426R	–	–	125	–	–	50	–

Double–Throw Fusible and Non-Fusible 600 Vac

Fusible Three–Pole, 600 Vac–600 Vdc

Amperes	Series	Type 1	Type 3R	Type 4,4X,5 304 Stainless Steel	Type 12 Gasketed	Horsepower Ratings* *
						240 Vac		480 Vac		600 Vac		Vdc *
						Std.	Max.	Std.	Max.	Std.	Max.	250	600
						3Ø	3Ø	3Ø	3Ø	3Ø	3Ø	250	600
30	F	DT361	DT361RB	–	–	3	7-1/2	5	15	7-1/2	20	–	–
60	F	DT362	DT362RB	–	–	7-1/2	15	15	30	15	50	–	–
100	F	DT363	DT363RB	–	–	15	30	25	60	30	75	20	5040 Std, 50 Max.*

Non-Fusible Three–Pole, 600 Vac–600 Vdc

Amperes	Series	Type 1	Type 3R	Type 4,4X,5 304 Stainless Steel	Type 12 Gasketed	Horsepower Ratings* *
						240 Vac		480 Vac		600 Vac		Vdc *
						Max.	Max.	Max.	Max.	Max.	Max.	250
						1Ø*	3Ø	1Ø*	3Ø*	1Ø*	3Ø	250
30	F	DTU361	DTU361RB	–	–	5	10	7-1/2	20	10	30	–
60	F	DTU362	DTU362RB	DTU362DS	DTU362AWK*	10	20*	25	50*	30	60*	–
100	F	DTU363	DTU363RB	DTU363DS	DTU363AWK*	20	40Use 75°C #1 Cu conductors only.*	40	75Use 75°C #1 Cu conductors only.*	40	75Use 75°C #1 Cu conductors only.*	–
200	E	C82344480 Vac, 250 Vdc maximum*	C82344RB480 Vac, 250 Vdc maximum*	–	–	–	–	–	–	–	–	–
400	A	DTU365	DTU365R	DTU365DS	DTU365AWK	–	125Standard rating.*	–	250Standard rating.*	–	350Standard rating.*	50*
600	A	DTU366250 Vdc maximum.*	DTU366R250 Vdc maximum.*	–	DTU366AWK250 Vdc maximum.*	–	125Standard rating.*	–	250Standard rating.*	–	350Standard rating.*	50*

Non-Fusible Four–Pole, 600 Vac–600 Vdc

Amperes	Series	Type 1	Type 3R	Type 4,4X,5 304 Stainless Steel	Type 12 Gasketed	Horsepower Ratings* *
						240 Vac		480 Vac		600 Vac		Vdc *
						Max. 2Ø	Max. 3Ø	Max. 2Ø	Max. 3Ø	Max. 2Ø	Max. 3Ø	250	600
60	F	DTU462	Use Type 12	DTU462DS	DTU462AWK*	20	20	40	50	50	60	10	30
100	F	DTU463	Use Type 12	DTU462DS	DTU463AWK*	30	40	50	75	50	75	20	50
400	A	DTU465250 Vdc maximum.*	DTU465R250 Vdc maximum.*	–	–	–	125Standard rating.*	–	250Standard rating.*	–	350Standard rating.*	–	–
600	A	DTU466250 Vdc maximum.*	DTU466R250 Vdc maximum.*	–	–	–	125*	–	250*	–	350*	–	–

Non-Fusible Six–Pole, 600 Vac–600 Vdc

Amperes	Series	Type 3R	Type 4,4X,5 304 Stainless Steel	Type 12 Gasketed	Horsepower Ratings* *
					240 Vac		480 Vac		600 Vac		Vdc *
					Std. 2Ø	Max. 3Ø	Std. 2Ø	Max. 3Ø	Std. 2Ø	Max. 3Ø	250	600
60	F	–	–	DTU662AWK*	20	20	40	50	50	60	10	30
100	F	–	–	DTU663AWK*	30	40	50	75	50	75	20	50

Accessories and Lug Data

Electrical Interlocks

EIK1

Electrical interlocks for Double Throw Safety Switches are available in kit form for field installation. Each kit contains instructions for proper field mounting.

For Electrical Interlock Contact Ratings, see Electrical Interlock Contact Ratings .

Electrical Interlocks

Switch	Field-Installed Electrical Interlock Kit Cat. No. *
30–100 A Type DT, DTU (Series F)	EIK1, EIK2 *
200 A 4P–Type 82000 * and DTU (Series E)	– *
400–600 A Type DTU (Series A)	DS200EK2D

Switch

Field-Installed Electrical Interlock Kit Cat. No. *

30–100 A Type DT, DTU (Series F)

EIK1,

EIK2 *

200 A 4P–Type 82000 * and DTU (Series E)

– *

400–600 A Type DTU (Series A)

DS200EK2D

Neutral Assemblies Kits

Neutral Assemblies

Switch	Field-Installed Standard Neutral Kit Cat. No.	Terminal Data AWG / kcmil	Field-Installed Copper only Neutral Kit Cat. No.	Terminal Data AWG / kcmil
30–100 A Type DT, DTU (Series F) (two- and three-pole switches only)	SN0310	(3) 14-1/0 Al / Cu plus (2) 14-6 Al / Cu Svc Ground	SN0310C	(3) 14-1/0 Cu plus
	SN0310	(3) 14-1/0 Al / Cu plus (2) 14-6 Al / Cu Svc Ground	SN0310C	(2) 14-6 Cu Svc Ground
30 A (Series T4) (two- and three-pole switches only)	DT30SN	(3) 14-4 Al / Cu plus (2) 14-4 Al / Cu Svc Ground	–	–
200 A Type 82000 (Series E) (two- and three-pole switches only)	225SNA	(3) 6-300 Al / Cu (1) 6-2/0 Al or 10-2/0 Cu Svc Ground
400 A Type DTU (Series A)	DT400NKD	(1) 1/0-720 Al / Cu or (2) 1/0-300 Al / Cu plus (2) 6-250 Al / Cu Svc Ground
600 A Type DTU (Series A)	DT600NKD	(6) 250-500 Al / Cu plus (1) 6-250 Al / Cu Svc Ground

Grounding Kits

DS468GKD

Grounding Kits

Switch	Grounding Lug Kit Cat. No.	Terminal Data AWG / kcmil
30–60 A Type DT, DTU (Series F)	Included	(3) 14-2 Al / Cu or (6) 14-10 Al / Cu
100 A Type DT, DTU (Series F)	Included	(3) 14–1/0 Al / Cu
30 A Type 92,000 (Series T4)	DT30SG	(4) 14-4 Al / Cu
200 A Type 82000 and DTU (Series E)	DT100SG	(3) 14–1/0 Al / Cu
400–600 A Type DTU (Series A)	DS468GKD	(2) 6–250 Al / Cu*

Class R Fuse Kits

RFK06

RFK10

When installed, this kit rejects all but Class R fuses. Kits are available for field installation.

Class R Fuse Kits

Switch	Series Number	Class R Fuse Kit Cat. No.
Class R Fuse Kits–240 V (two kits per three–pole switch)
30 A	F5	RFK03
60 A		RFK06
100 A		RFK10
Class R Fuse Kits–600 V (two kits per three–pole switch)
30 A	F5	RFK06
60 A		RFK06H
100 A		RFK10

Viewing Windows

Viewing window is not an offer in all double throws, consult with your local distributor to obtain more information.

Lock-ON Provisions

Lock-ON provisions are a standard feature on 30–100 A type DT and DTU (Series F), and type 92000 switches.

Rainproof Bolt-On Hubs for Double Throw Safety Switches

All hubs are for indoor or rainproof applications.

Suitable for use with conduit having ANSI standard taper pipe thread.

Type 3R switches with catalog number ending in RB have a bolt-on closing cap factory installed:

Accepts 3/4 in. through 2-1/2 in. bolt-on hubs
No gaskets required

Type 3R switches with R suffix have blank top endwalls:

Accepts 3 in. through 4 in. bolt on hubs
Gaskets provided
Conduit entry holes must be cut in the field

Rainproof Bolt-On Hubs

Conduit Size	3/4	1	1-1/4	1-1/2	2	2-1/2	3	3-1/2	4	Closing Cap
Hub Cat. No	B075	B100	B125	B150	B200	B250	B300	B350	B400	BCAP

Water Resistant Hubs

Suitable for use with conduit having ANSI standard taper pipe thread
Water resistant hubs are field installed on Type 4 / 4X / 5 stainless steel and Type 12 / 3R and 12K enclosures
Water resistant hubs are available in zinc or chrome plated finish
Gaskets provided

Water Resistant Hubs

Conduit Size	1/2	3/4	1	1-1/4	1-1/2	2	2-1/2	3	3-1/2	4
Standard- Zinc Hub Cat. No.	H050	H075	H100	H125	H150	H200	H250	H300	H350	H400
Chrome Plated Hub Cat. No.	H050CP	H075CP	H100CP	H125CP	H150CP	H200CP	–	–	–	–

Application Data for Double Throw Safety Switches

Diagram 1

Diagram 2

Situations Requiring Fuses

30–100 A Type DT (Series F): Select DT switches from 240 Volt Double-Throw Safety Switches and 600 Volt Double Throw Safety Switches which have provisions for accepting fuses.
30 A, 200–600 A Type 82,000 (Series E, T4, A), DTU devices: Use the non-fusible double throw switches from 240 Volt Double-Throw Safety Switches, and 600 Volt Double Throw Safety Switches, in conjunction with standard fusible devices, and install them according to diagram 1 or diagram 2.

Maximum Short Circuit Current Ratings

Switch Type	Amperes	Voltage Rating	UL Listed Fuse Class	Short Circuit Current Rating * (A)
Type 92000	30	240 V	H, K	10,000 *
Type DT (Series F)	30–100	240 V – 600 V	H, K	10,000
Type DT (Series F)	30–100	240 V – 600 V	R, J	200,000
Type DTU * (Series F)	30–100	240 V – 600 V	H or K	10,000 *
Type DTU * (Series F)	30–100	240 V – 600 V	R, J or T	200,000
DTU224NRB and DTU324NRB (Series E)	200	240 V	H, K	10,000 *
DTU324N (Series E)	200	240 V	R, J	10,000
Type 82,000	All	240 V – 600 V	H, K	10,000 *
Type DTU (Series A)	400–600	240 V – 600 V	H, K	10,000
Type DTU (Series A)	400–600	240 V – 600 V	R, J or T	100,000

Terminal Lug Data for Double Throw Safety Switches

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

Switch Type	Wires per Phase	Type 1, 3R, 4, 4X, 12
Switch Type	Wires per Phase	Standard Lug Wire Range AWG/kcmil
30–60 A Type DT, DTU (Series F)	1	12–2 Al or 14–2 Cu
100 A Type DT, DTU (Series F)	1	12–1/0 Al or 14–1/0 Cu

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	Lug Wire Range AWG/kcmil
Amperes	Wires per Phase	AWG/kcmil	Lug Wire Range AWG/kcmil
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
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

Dimensions for Double Throw Safety Switches

Series F Devices 30–100 A

30–100 A Type DT, DTU (Series F)–Approximate Dimensions

Cat. No.	Series	H		W		W/H		D
Cat. No.	Series	in.	mm	in.	mm	in.	mm	in.	mm
DT223	F5	38.00	965	9.88	251	11.13	283	6.75	171
DT223RB	F5	38.00	965	6.87	174	8.12	206	6.60	168
DT321RB	F5	38.00	965	10.25	260	11.80	300	6.60	168
DT322	F5	38.00	965	10.25	260	11.50	292	6.75	171
DT322RB	F5	38.00	965	10.25	260	11.80	300	6.60	168
DT323	F5	38.00	965	9.88	251	11.13	283	6.75	171
DT323RB	F5	38.00	965	6.87	174	8.12	206	6.60	168
DT361	F5	38.00	965	10.25	260	11.50	292	6.75	171
DT361RB	F5	38.00	965	10.25	260	11.80	300	6.60	168
DT362	F5	38.00	965	10.25	260	11.50	292	6.75	171
DT362RB	F5	38.00	965	10.25	260	11.80	300	6.60	168
DT363	F5	38.00	965	9.88	251	11.13	283	6.75	171
DT363RB	F5	38.00	965	6.87	174	8.12	206	6.60	168
DTU222	F5	29.94	760	10.25	260	11.96	304	6.93	176
DTU223	F5	29.94	760	10.25	260	11.96	304	6.93	176
DTU223RB	F5	30.50	775	10.25	260	11.96	304	6.93	176
DTU321	F5	29.94	760	10.25	260	11.96	304	6.93	176
DTU322	F5	29.94	760	10.25	260	11.96	304	6.93	176
DTU323	F5	29.94	760	10.25	260	11.96	304	6.93	176
DTU323RB	F5	30.50	775	10.25	260	11.96	304	6.93	176
DTU361	F5	29.94	760	10.25	260	11.96	304	6.93	176
DTU361RB	F5	30.50	775	10.25	260	11.96	304	6.93	176
DTU362	F5	29.94	760	10.25	260	11.96	304	6.93	176
DTU362AWK	F6	29.94	760	10.25	260	11.96	304	6.93	176
DTU362DS	F6	30.26	769	10.25	260	11.50	292	7.12	181
DTU362RB	F5	30.50	775	10.25	260	11.96	304	6.93	176
DTU363	F5	29.94	760	10.25	260	11.96	304	6.93	176
DTU363AWK	F6	29.94	760	10.25	260	11.96	304	6.93	176
DTU363DS	F6	30.26	769	10.25	260	11.50	292	7.12	181
DTU363RB	F5	30.50	775	10.25	260	11.96	304	6.93	176
DTU462	F5	29.94	760	10.25	260	11.96	304	6.93	176
DTU462AWK	F6	30.26	769	15.50	394	16.75	425	7.12	181
DTU462DS	F6	30.26	769	15.50	394	16.75	425	7.12	181
DTU463	F5	29.94	760	10.25	260	11.96	304	6.93	176
DTU463AWK	F6	30.26	769	15.50	394	16.75	425	7.12	181
DTU463DS	F6	30.26	769	15.50	394	16.75	425	7.12	181
DTU662AWK	F6	30.26	769	15.50	394	16.75	425	7.12	181
DTU663AWK	F6	30.26	769	15.50	394	16.75	425	7.12	181

Series A, E, and T4 Devices

200–600 A Types 82,000 and E-Series DTU and 30 A devices–Approximate Dimensions

Cat. No.	Series	H		W		W/H		D
Cat. No.	Series	in.	mm	in.	mm	in.	mm	in.	mm
DTU224NRB	E1	32.50	826	20.63	524	24.00	610	10.63	270
CD82344	E2	30.88	784	20.00	508	23.88	607	11.75	298
C82344RB	E1	32.50	826	20.63	524	24.00	610	10.63	270
C82344DS	E1	30.88	784	20.00	508	23.88	667	11.75	298
DTU324N	E1	32.50	826	24.50	622	26.25	667	10.63	270
DTU324NRB	E1	32.50	826	24.50	622	26.25	667	10.63	270
H82344	E2	32.50	826	24.50	622	26.25	667	10.63	270
DTU326	A1	63.31	1608	23.66	601	24.46	621	8.88	226
DTU426	A1	63.31	1608	27.00	686	27.80	706	8.88	226
DTU366	A1	63.31	1608	23.66	601	24.46	621	8.88	226
DTU466	A1	63.31	1608	27.00	686	27.80	706	8.88	226
DTU326R	A1	63.76	1619	23.66	601	24.46	621	8.88	226
DTU426R	A1	63.76	1619	27.00	686	27.80	706	8.88	226
DTU366R	A1	63.76	1619	23.66	601	24.46	621	8.88	226
DTU466R	A1	63.76	1619	27.00	686	27.80	706	8.88	226
DTU366AWK	A1	63.76	1619	23.66	601	24.46	621	8.88	226
DTU225	A1	53.81	1367	23.13	588	23.88	607	7.25	184
DTU225R	A1	53.81	1367	23.13	588	23.88	607	7.25	184
DTU325	A1	53.81	1367	23.13	588	23.88	607	7.25	184
DTU325R	A1	53.81	1367	23.13	588	23.88	607	7.25	184
DTU365	A1	53.81	1367	23.13	588	23.88	607	7.25	184
DTU325R	A1	53.81	1367	23.13	588	23.88	607	7.25	184
DTU365AWK	A1	57.50	1461	23.00	584	23.75	603	7.25	184
DTU365DS	A1	57.50	1461	23.00	584	23.75	603	7.25	184
DTU465	A1	53.81	1367	23.13	588	23.88	607	7.25	184
DTU465R	A1	53.81	1367	23.13	588	23.88	607	7.25	184

Double-Throw Safety Switches

30-100 A Types DT, DTU (Series F)

30 (Series T4), 200–600 A Types 82,000 and 200 A DTU (Series E, A)

Double–Throw Fusible and Non-Fusible 240 Vac

Double Throw–Fusible and Non-Fusible 240 Vac, Two-Pole and Three-Pole and Four-Pole

Double–Throw Fusible and Non-Fusible 600 Vac

Fusible Three–Pole, 600 Vac–600 Vdc

Non-Fusible Three–Pole, 600 Vac–600 Vdc

Non-Fusible Four–Pole, 600 Vac–600 Vdc

Non-Fusible Six–Pole, 600 Vac–600 Vdc

Accessories and Lug Data

Electrical Interlocks

Electrical Interlocks

Neutral Assemblies Kits

Neutral Assemblies

Grounding Kits

Grounding Kits

Class R Fuse Kits

Class R Fuse Kits

Viewing Windows

Lock-ON Provisions

Rainproof Bolt-On Hubs for Double Throw Safety Switches

Rainproof Bolt-On Hubs

Water Resistant Hubs

Water Resistant Hubs

Application Data for Double Throw Safety Switches

Maximum Short Circuit Current Ratings

Terminal Lug Data for Double Throw Safety Switches

Terminal Lug Data for Type DT, DTU (Series F) Double Throw Safety Switches 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 Types 82,000 and for A and E-Series DTU devices 30-100 A switches suitable for 60°C or 75°C conductors. 200–600 A switches suitable for 75° C conductors.*

Dimensions for Double Throw Safety Switches

Series F Devices 30–100 A

30–100 A Type DT, DTU (Series F)–Approximate Dimensions

Series A, E, and T4 Devices

200–600 A Types 82,000 and E-Series DTU and 30 A devices–Approximate Dimensions

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

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