Register to unlock your exclusive B2B prices and start shopping. Sign up now!

Siemens Electric box (breaker panel) - Page 341

ALPHA 400/630 DIN assembly kit front cover for unequipped panel 40 mm deep-drawn H =
In stock: No
Siemens
ALPHA 400/630 DIN assembly kit front cover for unequipped panel 40 mm deep-drawn H =
60,77 € per pcs
This price is valid until 01.10.25
EAN: 4001869337340
MPN: 8GK4501-3KK33
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
ALPHA 160 DIN, reserve section cover kit with support, RAL7035 H=600 W=250
In stock: No
Siemens
ALPHA 160 DIN, reserve section cover kit with support, RAL7035 H=600 W=250
30,14 € per pcs
This price is valid until 01.10.25
EAN: 4001869258065
MPN: 8GK4501-4KK11
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
Similar figure
In stock: No
Siemens
ALPHA 400/630 DIN, kit, reserve section cover with support H=450 W=750
57,85 € per pcs
This price is valid until 01.10.25
EAN: 4001869288338
MPN: 8GK4501-3KK32
Box: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
Similar figure
In stock: No
Siemens
ALPHA 400/630 DIN, kit, reserve section cover with support H=600 W=750
92,85 € per pcs
This price is valid until 01.10.25
EAN: 4001869288345
MPN: 8GK4501-4KK32
Box: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
ALPHA 400/630 kit H=450 W=250 1x 3NP1143 (NH1) on support plate
In stock: No
Siemens
ALPHA 400/630 kit H=450 W=250 1x 3NP1143 (NH1) on support plate
55,42 € per pcs
This price is valid until 01.10.25
EAN: 4001869403717
MPN: 8GK4550-3KK12
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
ALPHA 400/630 assembly kit H=450 W=250 2x 3NP1123./3NP1133. (NH00/000)
In stock: No
Siemens
ALPHA 400/630 assembly kit H=450 W=250 2x 3NP1123./3NP1133. (NH00/000)
45,45 € per pcs
This price is valid until 01.10.25
EAN: 4001869403779
MPN: 8GK4650-3KK12
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
ALPHA 400/630 DIN, assembly kit for fuse switch disconnector 3NP4010, 2x NH000
In stock: No
Siemens
ALPHA 400/630 DIN, assembly kit for fuse switch disconnector 3NP4010, 2x NH000
36,95 € per pcs
This price is valid until 01.10.25
EAN: 4001869259932
MPN: 8GK4552-2KK12
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
ALPHA 400/630 kit H=450 W=250 1x 3NP1153 (NH2) on support plate
In stock: No
Siemens
ALPHA 400/630 kit H=450 W=250 1x 3NP1153 (NH2) on support plate
56,88 € per pcs
This price is valid until 01.10.25
EAN: 4001869403731
MPN: 8GK4551-3KK12
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
ALPHA 400/630 assembly kit H=450 W=250 1x 3NP1143 (NH1) on busbar 60 mm
In stock: No
Siemens
ALPHA 400/630 assembly kit H=450 W=250 1x 3NP1143 (NH1) on busbar 60 mm
61,25 € per pcs
This price is valid until 01.10.25
EAN: 4001869403793
MPN: 8GK4651-3KK12
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
ALPHA 400/630 assembly kit H=300 W=250 2x 3NP1123./3NP1133. (NH00/000)
In stock: No
Siemens
ALPHA 400/630 assembly kit H=300 W=250 2x 3NP1123./3NP1133. (NH00/000)
41,08 € per pcs
This price is valid until 01.10.25
EAN: 4001869403755
MPN: 8GK4650-2KK12
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
ALPHA 400/630 assembly kit H=300 W=250 1x 3NP4075/3NP4076 on busbar
In stock: No
Siemens
ALPHA 400/630 assembly kit H=300 W=250 1x 3NP4075/3NP4076 on busbar
41,91 € per pcs
This price is valid until 01.10.25
EAN: 4001869397740
MPN: 8GK4663-2KK12
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
ALPHA 400/630 assembly kit H=300 W=250 1x 3NP4015/3NP4016 on busbar
In stock: No
Siemens
ALPHA 400/630 assembly kit H=300 W=250 1x 3NP4015/3NP4016 on busbar
41,91 € per pcs
This price is valid until 01.10.25
EAN: 4001869397719
MPN: 8GK4661-2KK12
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
ALPHA 400/630 assembly kit H=450 W=500 4x 3NP4015/3NP4016 on busbar
In stock: No
Siemens
ALPHA 400/630 assembly kit H=450 W=500 4x 3NP4015/3NP4016 on busbar
75,35 € per pcs
This price is valid until 01.10.25
EAN: 4001869395999
MPN: 8GK4662-3KK22
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
ALPHA 400/630 assembly kit H=450 W=250 2x 3NP4015/3NP4016 on busbar
In stock: No
Siemens
ALPHA 400/630 assembly kit H=450 W=250 2x 3NP4015/3NP4016 on busbar
47,16 € per pcs
This price is valid until 01.10.25
EAN: 4001869395906
MPN: 8GK4665-3KK12
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
Similar figure
In stock: No
Siemens
ALPHA 400/630 DIN, assembly kit for 3/4-pole circuit breaker 3VL160X, 3VL160
75,35 € per pcs
This price is valid until 01.10.25
EAN: 4001869260549
MPN: 8GK4701-3KK12
Box: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
ALPHA 630 DIN assembly kit for 3 and 4-pole circuit breaker 3VL630, H=600
In stock: No
Siemens
ALPHA 630 DIN assembly kit for 3 and 4-pole circuit breaker 3VL630, H=600
114,24 € per pcs
This price is valid until 01.10.25
EAN: 4001869272436
MPN: 8GK4704-4KK13
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
ALPHA 630 DIN, cover, height=600 mm, width=500 mm, cutout 8x 12 MW
In stock: No
Siemens
ALPHA 630 DIN, cover, height=600 mm, width=500 mm, cutout 8x 12 MW
46,18 € per pcs
This price is valid until 01.10.25
Subtotal: 461,80 € MOQ: 10
EAN: 4001869304410
MPN: 8GK9601-4KK21
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
ALPHA 630 DIN, cover, height=600 mm, width=250 mm, cutout 4x 12 MW
In stock: No
Siemens
ALPHA 630 DIN, cover, height=600 mm, width=250 mm, cutout 4x 12 MW
38,16 € per pcs
This price is valid until 01.10.25
Subtotal: 381,60 € MOQ: 10
EAN: 4001869303956
MPN: 8GK9601-4KK11
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
ALPHA 630 DIN, cover, height=600 mm, width=750 mm, cutout 12x 12 MW
In stock: No
Siemens
ALPHA 630 DIN, cover, height=600 mm, width=750 mm, cutout 12x 12 MW
79,24 € per pcs
This price is valid until 01.10.25
Subtotal: 792,40 € MOQ: 10
EAN: 4001869304083
MPN: 8GK9601-4KK31
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
ALPHA, Section cover, Closed, H: 300 mm, W: 250 mm
In stock: No
Siemens
ALPHA, Section cover, Closed, H: 300 mm, W: 250 mm
14,15 € per pcs
This price is valid until 01.10.25
EAN: 4001869336800
MPN: 8GK9602-2KK10
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
ALPHA, Section cover, Closed, H: 450 mm, W: 250 mm
In stock: No
Siemens
ALPHA, Section cover, Closed, H: 450 mm, W: 250 mm
19,25 € per pcs
This price is valid until 01.10.25
EAN: 4001869336817
MPN: 8GK9602-3KK10
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
Basic module separation rear H: 200 mm, W: 600 mm
In stock: No
Siemens
Basic module separation rear H: 200 mm, W: 600 mm
28,40 €
This price is valid until 24.12.25
EAN: 4001869560953
MPN: 8PQ5000-4BA74
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
Separation coupling panel 3WL size I, W: 600 mm D: 400 mm
In stock: No
Siemens
Separation coupling panel 3WL size I, W: 600 mm D: 400 mm
381,89 €
This price is valid until 24.12.25
EAN: 4001869555157
MPN: 8PQ5000-5BA12
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
Mounting plate 3NP1123 (NH000 up to 160 A), 3NP1133 (NH00 up to 160 A), H:
In stock: No
Siemens
Mounting plate 3NP1123 (NH000 up to 160 A), 3NP1133 (NH00 up to 160 A), H:
44,66 €
This price is valid until 24.12.25
EAN: 4042948183328
MPN: 8PQ6000-3BA78
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
Mounting plate 3NP1143 (NH1 up to 250 A), 3NP1153 (NH2 up to 400 A), H:
In stock: No
Siemens
Mounting plate 3NP1143 (NH1 up to 250 A), 3NP1153 (NH2 up to 400 A), H:
44,66 €
This price is valid until 24.12.25
EAN: 4042948183304
MPN: 8PQ6000-3BA75
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
Cable connection rear circuit breaker 3VL3 up to 250 A 4-pole H: 200 mm
In stock: No
Siemens
Cable connection rear circuit breaker 3VL3 up to 250 A 4-pole H: 200 mm
206,21 €
This price is valid until 24.12.25
EAN: 4042948181157
MPN: 8PQ6000-5BA17
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
Cable connection rear circuit breakers 3VL1 and 3V2 up to 160 A 3-pole H: 150 mm
In stock: No
Siemens
Cable connection rear circuit breakers 3VL1 and 3V2 up to 160 A 3-pole H: 150 mm
71,15 €
This price is valid until 24.12.25
EAN: 4042948181126
MPN: 8PQ6000-5BA13
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
Similar figure
In stock: No
Siemens
Mounting plate 3WA size 1, 3 or 4-pole, H: 550 mm W: 600 mm
95,62 € per pcs
This price is valid until 24.12.25
EAN: 4042948182024
MPN: 8PQ6000-5BA26
Box: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
Connection vertical busbar 3WA size 1, fixed-mounted, W: 400 mm for compartment door The SIVACON
In stock: No
Siemens
Connection vertical busbar 3WA size 1, fixed-mounted, W: 400 mm for compartment door The SIVACON
389,10 €
This price is valid until 24.12.25
EAN: 4042948182307
MPN: 8PQ6000-5BA48
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
Vertical busbar connection 3WA size I (1,600 A), fixed mounting, withdrawable
In stock: No
Siemens
Vertical busbar connection 3WA size I (1,600 A), fixed mounting, withdrawable
415,22 €
This price is valid until 24.12.25
EAN: 4042948182284
MPN: 8PQ6000-5BA46
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
Connection vertical busbar 3WA size 1, fixed-mounted, covered by: compartment door W: 600 mm The
In stock: No
Siemens
Connection vertical busbar 3WA size 1, fixed-mounted, covered by: compartment door W: 600 mm The
418,58 €
This price is valid until 24.12.25
EAN: 4042948182321
MPN: 8PQ6000-5BA51
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
Vertical busbar connection 3WA size II (3,200 A), fixed mounting, withdrawable
In stock: No
Siemens
Vertical busbar connection 3WA size II (3,200 A), fixed mounting, withdrawable
462,49 €
This price is valid until 24.12.25
EAN: 4042948182291
MPN: 8PQ6000-5BA47
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
Cable connection 3WA size I, 3/4-pole, withdrawable, W: 400 mm
In stock: No
Siemens
Cable connection 3WA size I, 3/4-pole, withdrawable, W: 400 mm
354,09 €
This price is valid until 24.12.25
EAN: 4042948182765
MPN: 8PQ6000-5BA80
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
Similar figure
In stock: No
Siemens
Cable connection 3WA size I, 3/4-pole, withdrawable, W: 600 mm
398,02 €
This price is valid until 24.12.25
EAN: 4042948182789
MPN: 8PQ6000-5BA82
Box: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
SIVACON S4 DIN rail for modular door, W: 800mm
In stock: No
Siemens
SIVACON S4 DIN rail for modular door, W: 800mm
19,07 €
This price is valid until 24.12.25
EAN: 4042948183748
MPN: 8PQ6000-6BA53
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
Similar figure
In stock: No
Siemens
Mounting plate 3VA20 (100 A), 3VA21 (160 A), 3VA22 (250 A), 3 or 4-pole, fixed-mounted,
46,09 € per pcs
This price is valid until 24.12.25
EAN: 4001869561097
MPN: 8PQ6000-8BA08
Box: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
Cable connection 3VA22 (250 A) H: 200 mm fixed mounting, plug-in socket
In stock: No
Siemens
Cable connection 3VA22 (250 A) H: 200 mm fixed mounting, plug-in socket
153,98 €
This price is valid until 24.12.25
EAN: 4001869561165
MPN: 8PQ6000-8BA16
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
Similar figure
In stock: No
Siemens
Cable connection 3VA22 (250 A) H: 200 mm fixed mounting, plug-in socket
153,98 € per pcs
This price is valid until 24.12.25
EAN: 4001869561172
MPN: 8PQ6000-8BA17
Box: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
Mounting plate 3VA13 (400 A), 3VA14 (630 A), 3VA23 (400 A), 3VA24 (630 A), 4-pole,
In stock: No
Siemens
Mounting plate 3VA13 (400 A), 3VA14 (630 A), 3VA23 (400 A), 3VA24 (630 A), 4-pole,
57,81 €
This price is valid until 24.12.25
EAN: 4001869561240
MPN: 8PQ6000-8BA26
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
Similar figure
In stock: No
Siemens
Mounting plate 3VA13 (400 A), 3VA14 (630 A), 3VA23 (400 A), 3VA24 (630 A), 4-pole,
57,81 €
This price is valid until 24.12.25
EAN: 4001869561233
MPN: 8PQ6000-8BA25
Box: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
Mounting plate 3VA20 (100 A), 3-pole, plug-in socket, 8US setup, H: 400 mm W: 600
In stock: No
Siemens
Mounting plate 3VA20 (100 A), 3-pole, plug-in socket, 8US setup, H: 400 mm W: 600
68,93 €
This price is valid until 24.12.25
EAN: 4001869561356
MPN: 8PQ6000-8BA38
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
Mounting plate 3VA20 (100A), 3VA21 (160A), 3VA22 (250A), 3 or 4-pole, RCD: with, fixed-mounted, H:
In stock: No
Siemens
Mounting plate 3VA20 (100A), 3VA21 (160A), 3VA22 (250A), 3 or 4-pole, RCD: with, fixed-mounted, H:
68,93 €
This price is valid until 24.12.25
EAN: 4001869561349
MPN: 8PQ6000-8BA37
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
Mounting plate 3VA12 (250A), 3-pole, fixed-mounted, RCD: with, H: 400mm W: 800mm
In stock: No
Siemens
Mounting plate 3VA12 (250A), 3-pole, fixed-mounted, RCD: with, H: 400mm W: 800mm
81,16 €
This price is valid until 24.12.25
EAN: 4001869561394
MPN: 8PQ6000-8BA43
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
Mounting plate 3VA20 (100 A), 3VA21 (160 A), 3VA22 (250 A), 3-pole, plug-in design, RCD:
In stock: No
Siemens
Mounting plate 3VA20 (100 A), 3VA21 (160 A), 3VA22 (250 A), 3-pole, plug-in design, RCD:
93,40 €
This price is valid until 24.12.25
EAN: 4001869561462
MPN: 8PQ6000-8BA51
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
Mounting plate 3VA10 (100A), 3VA11 (160A), 4-pole, fixed-mounted, plug-in socket, RCD: with, H: 350mm W:
In stock: No
Siemens
Mounting plate 3VA10 (100A), 3VA11 (160A), 4-pole, fixed-mounted, plug-in socket, RCD: with, H: 350mm W:
81,16 €
This price is valid until 24.12.25
EAN: 4001869561448
MPN: 8PQ6000-8BA48
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
Mounting plate 3VA20 (100 A), 3VA21 (160 A), 3VA22 (250 A), 4-pole, plug-in design, RCD:
In stock: No
Siemens
Mounting plate 3VA20 (100 A), 3VA21 (160 A), 3VA22 (250 A), 4-pole, plug-in design, RCD:
93,40 €
This price is valid until 24.12.25
EAN: 4001869561486
MPN: 8PQ6000-8BA53
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
Mounting plate 3VA13 (400 A), 3VA14 (630 A), 3VA23 (400 A), 3VA24 (630 A), 4-pole,
In stock: No
Siemens
Mounting plate 3VA13 (400 A), 3VA14 (630 A), 3VA23 (400 A), 3VA24 (630 A), 4-pole,
93,40 €
This price is valid until 24.12.25
EAN: 4001869561578
MPN: 8PQ6000-8BA63
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
Cable connection N / PEN 3WA1363 (6.300A)
In stock: No
Siemens
Cable connection N / PEN 3WA1363 (6.300A)
223,56 €
This price is valid until 31.12.35
EAN: 4001869605982
MPN: 8PQ6000-8BA80
Package: 1
Estimate delivery time at our warehouse (approx.): 1-4 weeks
3WA connection main busbar - main busbar rear single 3/4-pole size III (6,300 A)
In stock: No
Siemens
3WA connection main busbar - main busbar rear single 3/4-pole size III (6,300 A)
1 325,03 €
This price is valid until 31.12.35
EAN: 4001869606422
MPN: 8PQ6001-0BA76
Package: 1
Estimate delivery time at our warehouse (approx.): 1-4 weeks
Similar figure
In stock: No
Siemens
DIAZED bus-mounting base SR60 3-pole, DIII, 63 A, 500 V for 5/10 mm busbars
18,03 € per pcs
This price is valid until 24.12.25
Subtotal: 72,12 € MOQ: 4
EAN: 4001869392479
MPN: 5SF6220
Package: 1
Box: 4
Estimate delivery time at our warehouse (approx.): 4-6 weeks
Siemens
In stock: No
Siemens
Mounting plate, 3VA27 (1600 A), H: 550 mm W: 400 mm
151,19 €
This price is valid until 24.12.25
EAN: 4047624387809
MPN: 8PQ6001-5BA74
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
Mounting plate 3VA12 (250 A), 3 or 4-pole, 8US setup, RCD: without, H: 400 mm
In stock: No
Siemens
Mounting plate 3VA12 (250 A), 3 or 4-pole, 8US setup, RCD: without, H: 400 mm
69,31 €
This price is valid until 31.12.35
EAN: 4047624343072
MPN: 8PQ6001-5BA68
Package: 1
Estimate delivery time at our warehouse (approx.): 1-4 weeks
Siemens
In stock: No
Siemens
SIVACON S4, screw fixation, 3VA27 (1600A)
21,52 €
This price is valid until 24.12.25
EAN: 4047624387823
MPN: 8PQ6001-5BA75
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
SIVACON S4, MBB connection, 3VA27 (1600A), Withdrawable, 3/4-pole, MBB: top rear, W: 400mm
In stock: No
Siemens
SIVACON S4, MBB connection, 3VA27 (1600A), Withdrawable, 3/4-pole, MBB: top rear, W: 400mm
178,71 €
This price is valid until 31.12.35
EAN: 4047624342884
MPN: 8PQ6001-5BA66
Package: 1
Estimate delivery time at our warehouse (approx.): 1-4 weeks
Connection terminal 40x10 mm 1 pack=10 units reference: 8PQ5000-0BA74
In stock: No
Siemens
Connection terminal 40x10 mm 1 pack=10 units reference: 8PQ5000-0BA74
628,13 €
This price is valid until 24.12.25
EAN: 4001869592893
MPN: 8PQ9400-1BA18
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
Locking system profile semicylinder 1 pack = 10 units reference: 8PQ9400-0BA28
In stock: No
Siemens
Locking system profile semicylinder 1 pack = 10 units reference: 8PQ9400-0BA28
195,12 €
This price is valid until 24.12.25
EAN: 4001869593029
MPN: 8PQ9400-1BA33
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
SIVACON S4 Locking bars profile cyl...
In stock: No
Siemens
SIVACON S4 Locking bars profile cyl...
373,55 €
This price is valid until 24.12.25
EAN: 4001869593050
MPN: 8PQ9400-1BA36
Package: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
SIVACON S4 clamping nut M6 , 1 pack = 50 units
In stock: No
Siemens
SIVACON S4 clamping nut M6 , 1 pack = 50 units
115,82 €
This price is valid until 24.12.25
EAN: 4047624576074
MPN: 8PQ9400-1BA54
Package: 1
Estimate delivery time at our warehouse (approx.): 6-10 weeks
Similar figure
In stock: No
Siemens
Busbar system Busbar center-to-center spacing 60 mm Connection module, Width: 18 mm Bar thickness: 5.1
23,16 € per pcs
This price is valid until 24.12.25
EAN: 4011209207530
MPN: 8US1200-0AA00
Box: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks
Similar figure
In stock: No
Siemens
Device adapter, 3-pole, 125 A, without fixing screws for NGG/HGG/LGG/3VA51
96,21 € per pcs
This price is valid until 01.10.25
EAN: 4001869521954
MPN: 8US1211-4SS00
Box: 1
Estimate delivery time at our warehouse (approx.): 4-6 weeks