Part Number	3LD2003-0TK53	3LD2103-0TK53	3LD2203-0TK53	3LD2504-0TK53	3LD2704-0TK53
product brand name	SENTRON	SENTRON	SENTRON	SENTRON	SENTRON
product designation	3LD Switch disconnector	3LD Switch disconnector	3LD Switch disconnector	3LD Switch disconnector	3LD Switch disconnector
design of the product	EMERGENCY-STOP switch	EMERGENCY-STOP switch	EMERGENCY-STOP switch	EMERGENCY-STOP switch	EMERGENCY-STOP switch
display version for switch position indicator manual operation	1 ON – 0 OFF	1 ON – 0 OFF	1 ON – 0 OFF	1 ON – 0 OFF	1 ON – 0 OFF
type of switch	front mounted	front mounted	front mounted	front mounted	front mounted
design of the actuating element	Short rotary knob	Short rotary knob	Short rotary knob	Short rotary knob	Short rotary knob
color of the actuating element	red	red	red	red	red
design of handle	rotary operating mechanism, red/yellow	rotary operating mechanism, red/yellow	rotary operating mechanism, red/yellow	rotary operating mechanism, red/yellow	rotary operating mechanism, red/yellow
type of the driving mechanism motor drive	No	No	No	No	No
General technical data
number of poles	3	3	3	3	3
size of switch disconnector	1	2	2	2	4
mechanical service life (operating cycles) typical	100 000	100 000	100 000	100 000	100 000
electrical endurance (operating cycles)
● at AC-23 A at 690 V	6 000	6 000	6 000	6 000	6 000
operating frequency maximum	50 1/h	50 1/h	50 1/h	50 1/h	50 1/h
degree of pollution	3	3	3	3	3
Voltage
insulation voltage rated value	690 V	690 V	690 V	690 V	690 V
surge voltage resistance rated value	6 kV	6 kV	6 kV	6 kV	6 kV
operating voltage
● at AC rated value	690 V	690 V	690 V	690 V	690 V
operating frequency rated value
● minimum	50 Hz	50 Hz	50 Hz	50 Hz	50 Hz
● maximum	60 Hz	60 Hz	60 Hz	60 Hz	60 Hz
Protection class
protection class IP	IP65	IP65	IP65	IP65	IP65
degree of protection NEMA rating	1, 3R, 4X, 12	1, 3R, 4X, 12	1, 3R, 4X, 12	1, 3R, 4X, 12	1, 3R, 4X, 12
protection class IP on the front	IP65	IP65	IP65	IP65	IP65
Dissipation
power loss [W] for rated value of the current at AC in hot operating state per pole	0.5 W	1.1 W	1.8 W	4.5 W	7.5 W
	0.5 W	1.1 W	1.8 W	4.5 W	7.5 W	operational current
● at 40 °C rated value	16 A	25 A	32 A	63 A	100 A
● at 45 °C rated value	16 A	25 A	32 A	63 A	100 A
● at 50 °C rated value	16 A	25 A	32 A	63 A	100 A
● at 55 °C rated value	16 A	25 A	32 A	63 A	100 A
● at AC rated value	16 A	25 A	32 A	63 A	100 A
Main circuit
operational current
● at AC-21 at 690 V rated value	16 A	25 A	32 A	63 A	100 A
● at AC-21 A at 240 V rated value	16 A	25 A	32 A	63 A	100 A
● at AC-21 A at 400 V rated value	16 A	25 A	32 A	63 A	100 A
● at AC-21 A at 440 V rated value	16 A	25 A	32 A	63 A	100 A
● at AC-23 A at 400 V rated value	16 A	20 A	22 A	43 A	70 A
operating power
● at AC-23 A at 240 V rated value	4 kW	5 kW	6 kW	11 kW	18.5 kW
● at AC-23 A at 400 V rated value	8 kW	10 kW	12 kW	22 kW	37 kW
● at AC-23 A at 440 V rated value	7.5 kW	9.5 kW	11.5 kW	22 kW	37 kW
● at AC-23 A at 690 V rated value	8 kW	10 kW	12 kW	19 kW	30 kW
● at AC-3 at 240 V rated value	3 kW	4 kW	5.5 kW	11 kW	18.5 kW
● at AC-3 at 400 V rated value	6 kW	8 Kw	10 kW	19 kW	30 kW
● at AC-3 at 690 V rated value	5.5 kW	7.5 kW	9.5 kW	15 kW	22 kW
Auxiliary circuit
number of CO contacts for auxiliary contacts	0	0	0	0	0
number of NC contacts for auxiliary contacts	0	0	0	0	0
number of NO contacts for auxiliary contacts	0	0	0	0	0
operating voltage of auxiliary contacts at AC maximum	500 V	500 V	500 V	500 V	500 V
continuous current of the auxiliary contact rated value	10	10	10	10	10
insulation voltage of the auxiliary switch rated value	500 V	500 V	500 V	500 V	500 V
Suitability
suitability for use
● main switch	Yes	Yes	Yes	Yes	Yes
● switch disconnector	Yes	Yes	Yes	Yes	Yes
● EMERGENCY OFF switch	Yes	Yes	Yes	Yes	Yes
● safety switch	Yes	Yes	Yes	Yes	Yes
● maintenance/repair switch	Yes	Yes	Yes	Yes	Yes
Product details
product feature can be locked into OFF position	Yes	Yes	Yes	Yes	Yes
accessories
product extension optional
● motor drive	No	No	No	No	No
● voltage trigger	No	No	No	No	No
number of connectable NC contacts for auxiliary contacts attachable maximum	3	3	3	3	3
number of connectable NO contacts for auxiliary contacts attachable maximum	3	3	3	3	3
number of connectable CO contacts for auxiliary contacts attachable maximum	0	0	0	0	0
number of bracket locks maximum	3	3	3	3	3
hasp thickness of the bracket locks	4 … 8 mm	4 … 8 mm	4 … 8 mm	4 … 8 mm	4 … 8 mm
Short circuit
conditional short-circuit current with line-side fuse protection
● at 690 V by gG fuse rated value	50 kA	50 kA	50 kA	50 kA	50 kA
let-through current with closed switch
● at 240 V for combination switch + gG fuse maximum	3 kA	3.5 kA	4.5 kA	6 kA	10 kA
● at 440 V for combination switch + gG fuse maximum 3 kA	3 kA	3.5 kA	4.5 kA	6 kA	10 kA
● at 690 V for combination switch + gG fuse maximum permissible	3 kA	4 kA	5 kA	6 kA	10 kA
I2t value with closed switch
● at 240 V for combination switch + gG fuse maximum	2.5 kA2.s	4 kA2.s	9 kA2.s	21 kA2.s	64 kA2.s
● at 440 V for combination switch + gG fuse maximum	2.5 kA2.s	4 kA2.s	9 kA2.s	21 kA2.s	64 kA2.s
● at 690 V for combination switch + gG fuse maximum	3 kA2.s	4 kA2.s	9 kA2.s	21 kA2.s	64 kA2.s
design of the fuse link
● for short-circuit protection of the main circuit required	fuse gL/gG: 20 A	use gL/gG: 25 A	fuse gL/gG: 40 A	fuse gL/gG: 63 A	fuse gL/gG: 100 A
● for short-circuit protection of the auxiliary switch required	fuse gL/gG: 10 A	fuse gL/gG: 10 A	fuse gL/gG: 10 A	fuse gL/gG: 10 A	fuse gL/gG: 10 A
operational current of upstream fuse rated value	20 A	25 A	40 A	63 A
according UL
operational current at AC according to UL 508/UL 60947-4-1 rated value	16 A	25 A	32 A	63 A	100 A
operating voltage at AC at 50/60 Hz according to UL 508/UL 60947-4-1 rated value	600 V	600 V	600 V	600 V	600 V
active power [hp] at AC at 480 V according to UL 508/UL 60947-4-1 rated value	7.5	10	20	40	60
active power [hp] at AC at 600 V according to UL 508/UL 60947-4-1 rated value	10	15	20	50	75
short-time withstand current (SCCR) at 600 V according to UL 508/UL 60947-4-1	5 Ka	5 Ka	5 Ka	5 Ka	10 kA
continuous current of upstream fuse according to UL rated value	50 A	50 A	80 A	175 A	200 A
type of fuse according to UL	RK5	RK5	RK5	RK5	RK5
Connections
AWG number as coded connectable conductor cross section solid
● maximum	10	8	8	6	1
● minimum	18	14	14	14	12
type of connectable conductor cross-sections for copper conductor
● solid	1x (1…6mm²)	1x (1,5…16mm²)	1x (1,5…16mm²)	1x (2,5…35mm²)	1x (4…50mm²)
● finely stranded with core end processing	1x (1…4mm²)	1x (1,5…10mm²)	1x (1,5…10mm²)	1x (2.5…16 mm²)	1x (4…35mm²) 1x (4…35mm²) 1x (4…35mm²)
● stranded	1x (1..6mm²)	1x (1,5…16mm²)	1x (1,5…16mm²)	1x (2,5..35mm²)	1x (4…50mm²)
type of connectable conductor cross-sections for auxiliary contacts
● solid	lateral auxiliary switch 2x (0,75 … 2,5mm²), 1x 4mm²; front auxiliary switch 1x (0,75 … 2,5mm²)	lateral auxiliary switch 2x (0,75 … 2,5mm²), 1x 4mm²; front auxiliary switch 1x (0,75 … 2,5mm²)	lateral auxiliary switch 2x (0,75 … 2,5mm²), 1x 4mm²; front auxiliary switch 1x (0,75 … 2,5mm²)	lateral auxiliary switch 2x (0,75 … 2,5mm²), 1x 4mm²; front auxiliary switch 1x (0,75 … 2,5mm²)	lateral auxiliary switch 2x (0,75 … 2,5mm²), 1x 4mm²; front auxiliary switch 1x (0,75 … 2,5mm²)
● finely stranded with core end processing	lateral auxiliary switch 2x (0,75 … 1,5mm²), 1x 2,5mm²; front auxiliary switch 1x 2,5mm²	lateral auxiliary switch 2x (0,75 … 1,5mm²), 1x 2,5mm²; front auxiliary switch 1x 2,5mm²	lateral auxiliary switch 2x (0,75 … 1,5mm²), 1x 2,5mm²; front auxiliary switch 1x 2,5mm²	lateral auxiliary switch 2x (0,75 … 1,5mm²), 1x 2,5mm²; front auxiliary switch 1x 2,5mm²	lateral auxiliary switch 2x (0,75 … 1,5mm²), 1x 2,5mm²; front auxiliary switch 1x 2,5mm²
● stranded	lateral auxiliary switch 2x (0,75 … 2,5mm²), 1x 4mm²; front auxiliary switch 1x (0,75 … 2,5mm²)	lateral auxiliary switch 2x (0,75 … 2,5mm²), 1x 4mm²; front auxiliary switch 1x (0,75 … 2,5mm²)	lateral auxiliary switch 2x (0,75 … 2,5mm²), 1x 4mm²; front auxiliary switch 1x (0,75 … 2,5mm²)	lateral auxiliary switch 2x (0,75 … 2,5mm²), 1x 4mm²; front auxiliary switch 1x (0,75 … 2,5mm²)	lateral auxiliary switch 2x (0,75 … 2,5mm²), 1x 4mm²; front auxiliary switch 1x (0,75 … 2,5mm²)
type of electrical connection
● for main current circuit	box terminal	box terminal	box terminal	box terminal	box terminal
● for auxiliary contacts	connection terminals	connection terminals	connection terminals	connection terminals	connection terminals
Mechanical Design
height	84 mm	84 mm	83 mm	106 mm	107 mm
width	67 mm	67 mm	67 mm	90 mm	90 mm
depth	92.5 mm	92.5 mm	92.5 mm	110.5 mm	112.5 mm
type of device	fixed mounting	fixed mounting	fixed mounting	fixed mounting	fixed mounting
fastening method	Built-in unit fixed-mounted version	Built-in unit fixed-mounted version	Built-in unit fixed-mounted version	Built-in unit fixed-mounted version	Built-in unit fixed-mounted version
fastening method
● 4-hole front mounting	Yes	Yes	Yes	Yes	Yes
● front mounting with central attachment	No	No	No	No	No
● rail mounting	No	No	No	No	No
net weight	203 g	187 g	205 g	420 g	497 g
Environmental conditions
ambient temperature during operation
● minimum	-25 °C	-25 °C	-25 °C	-25 °C	-25 °C
● maximum	55 °C	55 °C	55 °C	55 °C	55 °C
ambient temperature during storage
● minimum	-25 °C	-25 °C	-25 °C	-25 °C	-25 °C
● maximum	55 °C	55 °C	55 °C	55 °C	55 °C