Registreeru, et avada oma eksklusiivsed B2B hinnad ja alustada ostlemist. Registreeru kohe!

Siemens Mootori kaitselülitid - Lk 10

Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker size S3 for motor protection, Class 10 A-release 45...63 A 3RV1041-4JA15
151,88 €
Hind kehtib kuni 24.12.25
EAN: 4011209392489
MPN: 3RV1041-4JA15
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker size S3 for motor protection, Class 10 A-release 14...20 3RV1042-4BA10
165,01 €
Hind kehtib kuni 24.12.25
EAN: 4011209341968
MPN: 3RV1042-4BA10
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker size S3 Motor protection up to 100 kA,Class 10 A-release 57...75 3RV1042-4KA10
240,63 €
Hind kehtib kuni 24.12.25
EAN: 4011209300408
MPN: 3RV1042-4KA10
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker size S3 A-release 57...75 A Short-circuit release 975 A Motor 3RV1042-4KB10
260,66 €
Hind kehtib kuni 24.12.25
EAN: 4011209300415
MPN: 3RV1042-4KB10
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker size S3 A-release 70...90 A Short-circuit release 1170 A Motor 3RV1042-4LB10
271,41 €
Hind kehtib kuni 24.12.25
EAN: 4011209300439
MPN: 3RV1042-4LB10
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker size S2 for motor protection, Class 10 with overload relay function A-release 3RV1131-4BA10
127,80 €
Hind kehtib kuni 24.12.25
EAN: 4011209409736
MPN: 3RV1131-4BA10
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker size S2 for motor protection, Class 10 with overload relay function A-release 3RV1131-4EA10
133,85 €
Hind kehtib kuni 24.12.25
EAN: 4011209409750
MPN: 3RV1131-4EA10
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker size S2 for motor protection, Class 10 with overload relay function A-release 3RV1131-4HA10
164,16 €
Hind kehtib kuni 24.12.25
EAN: 4011209408104
MPN: 3RV1131-4HA10
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker size S3 for motor protection, Class 10 with overload relay function A-release 3RV1142-4BA10
215,44 €
Hind kehtib kuni 24.12.25
EAN: 4011209414525
MPN: 3RV1142-4BA10
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker size S3 A-release 28...40 A Short-circuit release 520 A with overload relay 3RV1142-4FA10
271,70 €
Hind kehtib kuni 24.12.25
EAN: 4011209414556
MPN: 3RV1142-4FA10
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker size S3 For starter combination Rated current 40 A Short-circuit 3RV1342-4FC10
227,84 €
Hind kehtib kuni 24.12.25
EAN: 4011209304406
MPN: 3RV1342-4FC10
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker size S3 for motor protection, Class 10 with overload relay function A-release 3RV1142-4KA10
284,53 €
Hind kehtib kuni 24.12.25
EAN: 4011209414617
MPN: 3RV1142-4KA10
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker size S3 A-release 70...90 A Short-circuit release 1170 A with overload relay 3RV1142-4LA10
295,36 €
Hind kehtib kuni 24.12.25
EAN: 4011209414624
MPN: 3RV1142-4LA10
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker size S2 For starter combination Rated current 25 A Short-circuit 3RV1331-4DC10
91,86 €
Hind kehtib kuni 24.12.25
EAN: 4011209304222
MPN: 3RV1331-4DC10
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker size S3 For starter combination Rated current 75 A Short-circuit 3RV1342-4KC10
235,73 €
Hind kehtib kuni 24.12.25
EAN: 4011209304437
MPN: 3RV1342-4KC10
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker size S3 For starter combination Rated current 100 A Short-circuit 3RV1342-4MC10
255,89 €
Hind kehtib kuni 24.12.25
EAN: 4011209304451
MPN: 3RV1342-4MC10
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker size S2 For starter combination Rated current 45 A Short-circuit 3RV1331-4GC10
134,36 €
Hind kehtib kuni 24.12.25
EAN: 4011209304253
MPN: 3RV1331-4GC10
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker size S2 For transformer protection A-release 14...20 A 3RV1431-4BA10
99,28 €
Hind kehtib kuni 24.12.25
EAN: 4011209311503
MPN: 3RV1431-4BA10
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker size S3 for system protection with approval circuit breaker UL 489, CSA C22.2 3RV1742-5BD10
176,01 €
Hind kehtib kuni 24.12.25
EAN: 4011209626386
MPN: 3RV1742-5BD10
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker size S3 For starter combination Rated current 100 A Short-circuit 3RV1341-4MC10
185,26 €
Hind kehtib kuni 24.12.25
EAN: 4011209304390
MPN: 3RV1341-4MC10
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker size S3 for system protection with approval circuit breaker UL 489, CSA C22.2 3RV1742-5DD10
190,12 €
Hind kehtib kuni 24.12.25
EAN: 4011209626393
MPN: 3RV1742-5DD10
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker size S3 for system protection with approval circuit breaker UL 489, CSA C22.2 3RV1742-5CD10
176,01 €
Hind kehtib kuni 24.12.25
EAN: 4011209611672
MPN: 3RV1742-5CD10
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker size S3 For starter combination Rated current 20 A Short-circuit 3RV1342-4BC10
159,77 €
Hind kehtib kuni 24.12.25
EAN: 4011209345973
MPN: 3RV1342-4BC10
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker size S3 For starter combination Rated current 25 A Short-circuit 3RV1342-4DC10
172,64 €
Hind kehtib kuni 24.12.25
EAN: 4011209330979
MPN: 3RV1342-4DC10
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker size S3 for system protection with approval circuit breaker UL 489, CSA C22.2 3RV1742-5HD10
243,02 €
Hind kehtib kuni 24.12.25
EAN: 4011209626430
MPN: 3RV1742-5HD10
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker size S3 for system protection with approval circuit breaker UL 489, CSA C22.2 3RV1742-5LD10
243,02 €
Hind kehtib kuni 24.12.25
EAN: 4011209626447
MPN: 3RV1742-5LD10
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker size S3 for system protection with approval circuit breaker UL 489, CSA C22.2 No.5-02 3RV1742-5QD10
255,34 €
Hind kehtib kuni 24.12.25
EAN: 4011209790742
MPN: 3RV1742-5QD10
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker size S2 for motor protection, Class 20 A-release 11...16 3RV1031-4AB10
114,71 €
Hind kehtib kuni 24.12.25
EAN: 4011209348356
MPN: 3RV1031-4AB10
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker size S2 for motor protection, Class 20 A-release 40...50 3RV1031-4HB10
166,97 €
Hind kehtib kuni 24.12.25
EAN: 4011209348417
MPN: 3RV1031-4HB10
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker size S2 for motor protection, Class 20 A-release 36...45 3RV1031-4GB10
162,41 €
Hind kehtib kuni 24.12.25
EAN: 4011209348400
MPN: 3RV1031-4GB10
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker for auxiliary circuits +overload+short-circuit 5SK9011-2KK25
14,30 €
Hind kehtib kuni 24.12.25
Vahesumma: 143,00 € MOQ: 10
EAN: 4001869364377
MPN: 5SK9011-2KK25
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker for auxiliary circuits +overload+short-circuit 5SK9011-2KK26
14,30 €
Hind kehtib kuni 24.12.25
Vahesumma: 143,00 € MOQ: 10
EAN: 4001869364384
MPN: 5SK9011-2KK26
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker for auxiliary circuits 5SK9011-1KK28
11,84 €
Hind kehtib kuni 24.12.25
Vahesumma: 118,40 € MOQ: 10
EAN: 4001869364353
MPN: 5SK9011-1KK28
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker for auxiliary circuits +overload+short-circuit release 5SK9011-4KK28
17,52 €
Hind kehtib kuni 24.12.25
Vahesumma: 87,60 € MOQ: 5
EAN: 4001869364506
MPN: 5SK9011-4KK28
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker for auxiliary circuits +overload+short-circuit 5SK9011-2KK27
14,30 €
Hind kehtib kuni 24.12.25
Vahesumma: 143,00 € MOQ: 10
EAN: 4001869364391
MPN: 5SK9011-2KK27
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker for auxiliary circuits with short-circuit 5SK9011-6KK25
17,30 €
Hind kehtib kuni 24.12.25
Vahesumma: 86,50 € MOQ: 5
EAN: 4001869364421
MPN: 5SK9011-6KK25
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker for auxiliary circuits with short-circuit 5SK9011-6KK26
17,30 €
Hind kehtib kuni 24.12.25
Vahesumma: 86,50 € MOQ: 5
EAN: 4001869364438
MPN: 5SK9011-6KK26
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker for auxiliary circuits +overload+short-circuit 5SK9011-8KK25
19,31 €
Hind kehtib kuni 24.12.25
Vahesumma: 96,55 € MOQ: 5
EAN: 4001869364537
MPN: 5SK9011-8KK25
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
In stock: No Tootmisest väljas
Siemens
Circuit breaker for auxiliary circuits +overload+short-circuit 5SK9011-8KK28
19,31 €
Hind kehtib kuni 24.12.25
Vahesumma: 96,55 € MOQ: 5
EAN: 4001869364568
MPN: 5SK9011-8KK28
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Circuit breaker size S0 for motor protection, Class 10 A-release…3RV2021-4DA10-Z W96
In stock: No
Siemens
Circuit breaker size S0 for motor protection, Class 10 A-release…3RV2021-4DA10-Z W96
52,85 €
Hind kehtib kuni 31.12.35
Vahesumma: 1 268,40 € MOQ: 24
EAN: 4047621083766
MPN: 3RV2021-4DA10-Z W96
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 1-4 weeks
Circuit breaker size S00 for motor protection, Class 10 A-release 9...12 A N-release 163 A Screw terminal Standard switching capacity with transverse auxiliary
In stock: No
Siemens
Circuit breaker size S00 for motor protection, Class 10 A-release 9...12 A N-release 163 A Screw terminal Standard switching capacity with transverse auxiliary
48,70 €
Hind kehtib kuni 31.12.35
Vahesumma: 584,40 € MOQ: 12
EAN: 4047621082769
MPN: 3RV2011-1KA15-Z W97
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 1-4 weeks
circuit breaker size S0 for system protection without phase failure protection A-release 0.28...0.4 A short-circuit release 5.2 A screw terminal standard switching capacity
In stock: No
Siemens
circuit breaker size S0 for system protection without phase failure protection A-release 0.28...0.4 A short-circuit release 5.2 A screw terminal standard switching capacity
37,91 €
Hind kehtib kuni 24.12.25
EAN: 4047621118970
MPN: 3RV2021-0EA10-0DA0
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
circuit breaker size S0 for system protection without phase failure protection A-release 0.35...0.5 A short-circuit release 6.5 A screw terminal standard switching capacity
In stock: No
Siemens
circuit breaker size S0 for system protection without phase failure protection A-release 0.35...0.5 A short-circuit release 6.5 A screw terminal standard switching capacity
37,91 €
Hind kehtib kuni 24.12.25
EAN: 4047621118987
MPN: 3RV2021-0FA10-0DA0
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
circuit breaker size S0 for system protection without phase failure protection A-release 1.1...1.6 A short-circuit release 21 A screw terminal standard switching capacity
In stock: No
Siemens
circuit breaker size S0 for system protection without phase failure protection A-release 1.1...1.6 A short-circuit release 21 A screw terminal standard switching capacity
42,94 €
Hind kehtib kuni 24.12.25
EAN: 4047621119038
MPN: 3RV2021-1AA10-0DA0
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
circuit breaker size S0 for system protection without phase failure protection A-release 0.45...0.63 A short-circuit release 8.2 A screw terminal standard switching capacity
In stock: No
Siemens
circuit breaker size S0 for system protection without phase failure protection A-release 0.45...0.63 A short-circuit release 8.2 A screw terminal standard switching capacity
37,91 €
Hind kehtib kuni 24.12.25
EAN: 4047621118994
MPN: 3RV2021-0GA10-0DA0
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
circuit breaker size S0 for system protection without phase failure protection A-release 0.7...1 A short-circuit release 13 A screw terminal standard switching capacity
In stock: No
Siemens
circuit breaker size S0 for system protection without phase failure protection A-release 0.7...1 A short-circuit release 13 A screw terminal standard switching capacity
40,26 €
Hind kehtib kuni 24.12.25
EAN: 4047621119014
MPN: 3RV2021-0JA10-0DA0
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
circuit breaker size S0 for system protection without phase failure protection A-release 1.4...2 A short-circuit release 26 A screw terminal standard switching capacity
In stock: No
Siemens
circuit breaker size S0 for system protection without phase failure protection A-release 1.4...2 A short-circuit release 26 A screw terminal standard switching capacity
44,62 €
Hind kehtib kuni 24.12.25
EAN: 4047621119045
MPN: 3RV2021-1BA10-0DA0
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
circuit breaker size S0 for system protection without phase failure protection A-release 1.8...2.5 A short-circuit release 33 A screw terminal standard switching capacity
In stock: No
Siemens
circuit breaker size S0 for system protection without phase failure protection A-release 1.8...2.5 A short-circuit release 33 A screw terminal standard switching capacity
44,62 €
Hind kehtib kuni 24.12.25
EAN: 4047621119052
MPN: 3RV2021-1CA10-0DA0
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
circuit breaker size S0 for system protection without phase failure protection A-release 3.5...5 A short-circuit release 65 A screw terminal standard switching capacity
In stock: No
Siemens
circuit breaker size S0 for system protection without phase failure protection A-release 3.5...5 A short-circuit release 65 A screw terminal standard switching capacity
44,62 €
Hind kehtib kuni 24.12.25
EAN: 4047621119076
MPN: 3RV2021-1FA10-0DA0
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
circuit breaker size S3 for system protection without phase failure protection A release 57...75 A short-circuit release 975 A screw terminal standard switching
In stock: No
Siemens
circuit breaker size S3 for system protection without phase failure protection A release 57...75 A short-circuit release 975 A screw terminal standard switching
145,94 €
Hind kehtib kuni 24.12.25
EAN: 4047621119977
MPN: 3RV2041-4KA10-0DA0
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Similar figure
In stock: No
Siemens
Circuit breaker, S00, motor protection, Class 10, A-release 0.11-0.16 A, shor...
26,70 € tk kohta
Hind kehtib kuni 24.12.25
EAN: 4011209712317
MPN: 3RV2011-0AA10
Karp: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Similar figure
In stock: No
Siemens
Circuit breaker, S00, motor protection, Class 10, A-release 0.45-0.63 A, shor...
34,55 € tk kohta
Hind kehtib kuni 24.12.25
EAN: 4011209858527
MPN: 3RV2011-0GA15
Karp: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Similar figure
In stock: No
Siemens
Circuit breaker, S00, motor protection, Class 10, A-release 0.9-1.25 A, short...
37,91 € tk kohta
Hind kehtib kuni 24.12.25
EAN: 4011209841086
MPN: 3RV2011-0KA15
Karp: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Similar figure
In stock: No
Siemens
Circuit breaker, S00, motor protection, Class 10, A-release 1.8-2.5 A, short-...
39,25 € tk kohta
Hind kehtib kuni 24.12.25
EAN: 4011209841147
MPN: 3RV2011-1CA15
Karp: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Similar figure
In stock: No
Siemens
Circuit breaker, S00, motor protection, Class 10, A-release 5.5-8 A, short-ci...
39,25 € tk kohta
Hind kehtib kuni 24.12.25
EAN: 4011209841024
MPN: 3RV2011-1HA15
Karp: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Similar figure
In stock: No
Siemens
Circuit breaker, S0, motor protection, Class 10, A-release 0.45-0.63 A, short...
35,56 € tk kohta
Hind kehtib kuni 24.12.25
EAN: 4047621003177
MPN: 3RV2021-0GA15
Karp: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Similar figure
In stock: No
Siemens
Circuit breaker, S00, motor protection, Class 10, A-release 7-10 A, short-cir...
43,28 € tk kohta
Hind kehtib kuni 24.12.25
EAN: 4011209841185
MPN: 3RV2011-1JA15
Karp: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Similar figure
In stock: No
Siemens
Circuit breaker, S0, motor protection, Class 10, A-release 20-25 A, short-cir...
46,97 € tk kohta
Hind kehtib kuni 24.12.25
EAN: 4011209712546
MPN: 3RV2021-4DA10
Karp: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Similar figure
In stock: No
Siemens
Circuit breaker, S0, motor protection, Class 10, A-release 17-22 A, short-cir...
41,26 € tk kohta
Hind kehtib kuni 24.12.25
EAN: 4011209712539
MPN: 3RV2021-4CA10
Karp: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Similar figure
In stock: No
Siemens
Circuit breaker, S0, motor protection, Class 10, A-release 30-36 A, short-cir...
78,84 € tk kohta
Hind kehtib kuni 24.12.25
EAN: 4011209841376
MPN: 3RV2021-4PA15
Karp: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks