特价供应ABBVD4-1220-31M

			
F1S1250
F1S1250
F1S1600
F1S2000
F2S2500
F4S3200
F5S4000

F1H1250
F1H1250
F1H1600
F2H2000
F2H2500
F2S2500
F4S3200
F4S3600
F5S4000
F5S5000

F1H1250
F1H1250
F1H1600
F1S1250 R1250 AR1/LI FHR NST
F1S1600 R1250 AR1/LI FHR NST
F1S1600 R1600 AR1/LI FHR NST
F1S2000 R1250 AR1/LI FHR NST
F1S2000 R2000 AR1/LI FHR NST
F2S2500 R2000 AR1/LI FHR NST
F2S2500 R2500 AR1/LI FHR NST
F4S3200 R2000 AR1/LI FHR NST
F4S3200 R3200 AR1/LI FHR NST
F5S4000 R4000 AR1/LI FHR NST

F1S1250 R250 AR1/LS FHR NST
F1S1250 R400 AR1/LS FHR NST
F1S1250 R800 AR1/LS FHR NST
F1S1250 R1250 AR1/LS FHR NST
F1S1600 R1250 AR1/LS FHR NST
F1S1600 R1600 AR1/LS FHR NST
F1S2000 R1250 AR1/LS FHR NST
F2H2500 R2000 AR1/LI FHR NST
F2H2500 R2500 AR1/LI FHR NST

F1H1250 R250 AR1/LS FHR NST
F1H1250 R400 AR1/LS FHR NST
F1H1250 R800 AR1/LS FHR NST
F1H1250 R1250 AR1/LS FHR NST
F1H1600 R1250 AR1/LS FHR NST
F1H1600 R1600 AR1/LS FHR NST
F2H2000 R1250 AR1/LS FHR NST
F2H2000 R2000 AR1/LS FHR NST
F2H2500 R2000 AR1/LS FHR NST
F2H2500 R2500 AR1/LS FHR NST

F1H1250 R250 PR1/P FHR NST
F1H1250 R400 PR1/P FHR NST
F1H1250 R800 PR1/P FHR NST
F1H1250 R1250 PR1/P FHR NST
F2S2500 R2000 AR1/LI WMP NST
F2S2500 R2500 AR1/LI WMP NST
F4S3200 R2000 AR1/LI WMP NST
F4S3200 R3200 AR1/LI WMP NST
F4S3600 R2000 AR1/LI WMP NST
F4S3600 R3600 AR1/LI WMP NST
F5S4000 R3200 AR1/LI WMP NST
F5S4000 R4000 AR1/LI WMP NST
F5S5000 R4000 AR1/LI WMP NST
F5S5000 R5000 AR1/LI WMP NST
F1S1250 R1250 PR1/P WMP NST
F1S1600 R1250 PR1/P WMP NST
F1S1600 R1600 PR1/P WMP NST
F1S2000 R1250 PR1/P WMP NST
F1S2000 R2000 PR1/P WMP NST
F2S2500 R2000 PR1/P WMP NST
F2S2500 R2500 PR1/P WMP NST
F4S3200 R2000 PR1/P WMP NST
F4S3200 R3200 PR1/P WMP NST
F4S3600 R2000 PR1/P WMP NST
F4S3600 R3600 PR1/P WMP NST
F5S4000 R3200 PR1/P WMP NST
F5S4000 R4000 PR1/P WMP NST
F1H1250 R1250 AR1/LI WMP NST
F1H1600 R1250 AR1/LI WMP NST
F1H1600 R1600 AR1/LI WMP NST
F2H2000 R1250 AR1/LI WMP NST
F2H2000 R2000 AR1/LI WMP NST
F2H2500 R2000 AR1/LI WMP NST
F2H2500 R2500 AR1/LI WMP NST

F1H1250 R250 AR1/LS WMP NST
F1H1250 R400 AR1/LS WMP NST
F1H1250 R800 AR1/LS WMP NST
F1H1250 R1250 AR1/LS WMP NST
F1H1600 R1250 AR1/LS WMP NST
F1H1600 R1600 AR1/LS WMP NST
F2H2000 R1250 AR1/LS WMP NST
F2H2000 R2000 AR1/LS WMP NST
F2H2500 R2000 AR1/LS WMP NST
F2H2500 R2500 AR1/LS WMP NST

F1H1250 R250 PR1/P WMP NST
F1H1250 R400 PR1/P WMP NST
F1H1250 R800 PR1/P WMP NST
F1H1250 R1250 PR1/P WMP NST
F1H1600 R1250 PR1/P WMP NST
F1H1600 R1600 PR1/P WMP NST
F2H2000 R1250 PR1/P WMP NST
F2H2000 R2000 PR1/P WMP NST
F2H2500 R2000 PR1/P WMP NST
F2H2500 R2500 PR1/P WMP NST

2007年参考价目表 - Megamax 空气断路器(F型) - 抽出式固定部份
单价包括 ：
1.抽出式断路器-固定部份(抽架)
2.辅助触头(CO) - 10 CO
3.接线形式 - WHR :上下均为水平
                      WRV :上下均为垂直
                      WF    :上下均为前接线
4.*擋板
型号


FP:F1 (10CO) WHR
FP:F2 2000/2500 (10CO) WHR
FP:F4 3200 (10CO) WHR
FP:F4 3600 (10CO) WRV
FP:F5 4000 (10CO) WHR
F1S2000 R1250 AR1/LI WHR NST
F1S2000 R2000 AR1/LI WHR NST
F2S2500 R2000 AR1/LI WHR NST
F2S2500 R2500 AR1/LI WHR NST

F1S1250 R250 AR1/LS WHR NST
F1S1250 R400 AR1/LS WHR NST
F1S1250 R800 AR1/LS WHR NST
F1S1250 R1250 AR1/LS WHR NST
F1S1600 R1250 AR1/LS WHR NST
F1S1600 R1600 AR1/LS WHR NST
F1S2000 R1250 AR1/LS WHR NST
F1S2000 R2000 AR1/LS WHR NST
F2S2500 R2000 AR1/LS WHR NST
F2S2500 R2500 AR1/LS WHR NST
F2H2000 R2000 AR1/LI WHR NST
F2H2500 R2000 AR1/LI WHR NST
F2H2500 R2500 AR1/LI WHR NST

F1H1250 R250 AR1/LS WHR NST
F1H1250 R400 AR1/LS WHR NST
F1H1250 R800 AR1/LS WHR NST
F1H1250 R1250 AR1/LS WHR NST
F1H1600 R1250 AR1/LS WHR NST
F1H1600 R1600 AR1/LS WHR NST
F2H2000 R1250 AR1/LS WHR NST
F2H2000 R2000 AR1/LS WHR NST
F2H2500 R2000 AR1/LS WHR NST
F2H2500 R2500 AR1/LS WHR NST
锁扣 322 405 - F1/2
锁扣 321 3121E - F1/2
锁扣不同钥匙 - F1/2
锁扣 133 3113A - F3/6

简要说明：     PSS 软启动器 
PS 型号 物料号
PS PSS18/30-500L 82000437
PS PSS30/52-500L 82000439
PS PSS37/64-500L 82000441
PS PSS44/76-500L 82000443
PS PSS50/85-500L 82000445
PS PSS60/105-500L 82000447
PS PSS72/124-500L 82000449
PS PSS85/147-500L 82000451
PS PSS105/181-500L 82000433
PS PSS142/245-500L 82000435
PS PSS 175/300-500L 82000472
PS PSS 250/430-500L 82000474
PS PSS 300/515-500L 82000476
PS 
PS 
PS PST 30 … PST 300 / PSTB 370 … PSTB 1050 软启动器 
PS 230 - 600 V 
PS 型号 物料号
PS PST30-600-70 10011520
PS PST37-600-70 10011521
PS PST44-600-70 10011522
PS PST50-600-70 10011523
PS PST60-600-70 10011524
PS PST72-600-70 10011525
PS PST85-600-70 10011526
PS PST105-600-70 10011527
PS PST142-600-70 10011528
PS PST175-600-70 10011529
PS PST210-600-70 10011530
PS PST250-600-70 10011531
PS PST300-600-70 10011532
PS PSTB 370 … PSTB 1050 ( 内置旁路接触器 ) 
PS PSTB370-600-70 10011533
PS PSTB470-600-70 10011534
PS PSTB570-600-70 10011535
PS PSTB720-600-70 10011536
PS PSTB840-600-70 10011537
PS PSTB1050-600-70 10011538
PS 
PS 
PS 
PS PST 30 … PST 300 / PSTB 370 … PSTB 1050 软启动器 
PS 400 - 690 V 
PS 型号 物料号
PS PST30-690-70 10023939
PS PST37-690-70 10023940
PS PST44-690-70 10023941
PS PST50-690-70 10023942
PS PST60-690-70 10023943
PS PST72-690-70 10023944
PS PST85-690-70 10023945
PS PST105-690-70 10023946
PS PST142-690-70 10023947
PS PST175-690-70 10023948
PS PST210-690-70 10023949
PS PST250-690-70 10023950
PS PST300-690-70 10023951
PS PSTB 370 … PSTB 1050 ( 内置旁路接触器 ) 
PS PSTB370-690-70 10023952
PS PSTB470-690-70 10023953
PS PSTB570-690-70 10023954
PS PSTB720-690-70 10023955
PS PSTB840-690-70 10023956
PS PSTB1050-690-70 10023957
PS 
PS 
PS 
PS 软启动器附件 
PS 型号 物料号
PS 熔断器 
PS PS FU-50 82000425
PS PS FU-80 82000426
PS PS FU-125 82000418
PS PS FU-160 82000419
PS PS FU-200 82000420
PS PS FU-250 82000421
PS PS FU-315 82000422
PS PS FU-400 82000423
PS PS FU-450 82000424
PS 1SFA880003-C 82000000
PS 1SFA880003-E 82000001
PS 1SFA880003-F 82000002
PS 1SFA880003-G 82000003
PS 1SFA880003-H 82000004
PS 1SFA880003-J 82000005
PS 1SFA880003-K 82000006
PS 1SFA880003-L 82000007
PS 1SFA880003-M 82000008
PS 1SFA880003-N 82000009
PS 1SFA880003-P 82000010
PS 1SFA880003-R 82000011
PS 1SFA880003-S 82000012
PS 1SFA880003-T 82000013
PS 
PS 熔断器座 
PS 1SFA880004-A 10000954
PS 1SFA880004-B 10000955
PS PS FH-1 82000416
PS PS FH-2 82000417
PS 
PS 用于限流功能的电流互感器 
PS PS CT-60 82000082
PS PS CT-40 82000079
PS PS CT-50 82000081
PS PS CT-75 82000083
PS PS CT-100 82000075
PS PS CT-125 82000076
PS PS CT-150 82000077
PS PS CT-200 82000503
PS PS CT-250 82000078
PS PS CT-400 82000080 
PSS18/30-500L 82000437
PSS30/52-500L 82000439
PSS37/64-500L 82000441
PSS44/76-500L 82000443
PSS50/85-500L 82000445
PSS60/105-500L 82000447
PSS72/124-500L 82000449
PSS85/147-500L 82000451
PSS105/181-500L 82000433
PSS142/245-500L 82000435
PSS 175/300-500L 82000472
PSS 250/430-500L 82000474
PSS 300/515-500L 82000476
PST 30 … PST 300 / PSTB 370 … PSTB 1050 软启动器 
230 - 600 V 
型号 物料号
PST30-600-70 10011520
PST37-600-70 10011521
PST44-600-70 10011522
PST50-600-70 10011523
PST60-600-70 10011524
PST72-600-70 10011525
PST85-600-70 10011526
PST105-600-70 10011527
PST142-600-70 10011528
PST175-600-70 10011529
PST210-600-70 10011530
PST250-600-70 10011531
PST300-600-70 10011532
PSTB 370 … PSTB 1050 ( 内置旁路接触器 ) 
PSTB370-600-70 10011533
PSTB470-600-70 10011534
PSTB570-600-70 10011535
PSTB720-600-70 10011536
PSTB840-600-70 10011537
PSTB1050-600-70 10011538
PST 30 … PST 300 / PSTB 370 … PSTB 1050 软启动器 
400 - 690 V 
型号 物料号
PST30-690-70 10023939
PST37-690-70 10023940
PST44-690-70 10023941
PST50-690-70 10023942
PST60-690-70 10023943
PST72-690-70 10023944
PST85-690-70 10023945
PST105-690-70 10023946
PST142-690-70 10023947
PST175-690-70 10023948
PST210-690-70 10023949
PST250-690-70 10023950
PST300-690-70 10023951
PSTB 370 … PSTB 1050 ( 内置旁路接触器 ) 
PSTB370-690-70 10023952
PSTB470-690-70 10023953
PSTB570-690-70 10023954
PSTB720-690-70 10023955
PSTB840-690-70 10023956
PSTB1050-690-70 10023957
接触器 (交流电操作) 
B , A 型三较交流操作接触器 
型号 线圈电压 V - 50 Hz
B6-30-10 24
B6-30-10 110
B6-30-10 220
B6-30-10 380
B6-30-01 24
B6-30-01 110
B6-30-01 220
B6-30-01 380
B7-30-10 24
B7-30-10 110
B7-30-10 220
B7-30-10 380
B7-30-01 24
B7-30-01 110
B7-30-01 220
B7-30-01 380
A9-30-10 24
A9-30-10 110
A9-30-10 220
A9-30-10 380
A9-30-01 24
A9-30-01 110
A9-30-01 220
A9-30-01 380
A12-30-10 24
A12-30-10 110
A12-30-10 220
A12-30-10 380
A12-30-01 24
A12-30-01 110
A12-30-01 220
A12-30-01 380
A16-30-10 24
A16-30-10 110
A16-30-10 220
A16-30-10 380
A16-30-01 24
A16-30-01 110
A16-30-01 220
A16-30-01 380
接触器 (交流电操作) 
A 型三较交流操作接触器 
型号 线圈电压 V - 50 Hz
A26-30-10 24
A26-30-10 110
A26-30-10 220
A26-30-10 380
A26-30-01 24
A26-30-01 110
A26-30-01 220
A26-30-01 380
A30-30-10 24
A30-30-10 110
A30-30-10 220
A30-30-10 380
A30-30-01 24
A30-30-01 110
A30-30-01 220
A30-30-01 380
A40-30-10 24
A40-30-10 110
A40-30-10 220
A40-30-10 380
A40-30-01 24
A40-30-01 110
A40-30-01 220
A40-30-01 380
A50-30-11 24
A50-30-11 110
A50-30-11 220
A50-30-11 380
A63-30-11 24
A63-30-11 110
A63-30-11 220
A63-30-11 380
A75-30-11 24
A75-30-11 110
A75-30-11 220
A75-30-11 380
接触器 (交流电操作) 
A, AF 型三较交流操作接触器 
型号 线圈电压 V - 50 Hz
A95-30-11 24
A95-30-11 110
A95-30-11 220
A95-30-11 380
A110-30-11 24
A110-30-11 110
A110-30-11 220
A110-30-11 380
A145-30-11 24
A145-30-11 110
A145-30-11 220
A145-30-11 380
A185-30-11 24
A185-30-11 110
A185-30-11 220
A185-30-11 380
A210-30-11 24
A210-30-11 110
A210-30-11 220
A210-30-11 380
A260-30-11 24
A260-30-11 110
A260-30-11 220
A260-30-11 380
A300-30-11 24
A300-30-11 110
A300-30-11 220
A300-30-11 380
AF400-30-11 48-130
AF400-30-11 100-250
AF460-30-11 48-130
AF460-30-11 100-250
AF580-30-11 48-130
AF580-30-11 100-250
AF750-30-11 48-130
AF750-30-11 100-250
AF1350-30-11 100-250
AF1650-30-11 100-250
接触器 (交流电操作) 
B, A 型四较交流操作接触器 
型号 线圈电压 V - 50 Hz
B6-40-00 24
B6-40-00 110
B6-40-00 220
B6-40-00 380
B7-40-00 24
B7-40-00 110
B7-40-00 220
B7-40-00 380
A9-40-00 24
A9-40-00 110
A9-40-00 220
A9-40-00 380
A16-40-00 24
A16-40-00 110
A16-40-00 220
A16-40-00 380
A26-40-00 24
A26-40-00 110
A26-40-00 220
A26-40-00 380
A45-40-00 24
A45-40-00 110
A45-40-00 220
A45-40-00 380
A50-40-00 24
A50-40-00 110
A50-40-00 220
A50-40-00 380
A75-40-00 24
A75-40-00 110
A75-40-00 220
A75-40-00 380
接触器 (交流电操作) 
EK 型四较交流操作接触器 
型号 线圈电压 V - 50 Hz
EK110-40-11 24
EK110-40-11 110
EK110-40-11 220
EK110-40-11 380
EK150-40-11 24
EK150-40-11 110
EK150-40-11 220
EK150-40-11 380
EK175-40-11 24
EK175-40-11 110
EK175-40-11 220
EK175-40-11 380
EK210-40-11 24
EK210-40-11 110
EK210-40-11 220
EK210-40-11 380
EK370-40-11 110
EK370-40-11 220
EK370-40-11 380
EK550-40-11 110
EK550-40-11 220
EK550-40-11 380
EK1000-40-11 110
EK1000-40-11 220
EK1000-40-11 380
接触器 (交流电操作) 
VB6, VB7 三较小型可逆接触器 
型号 线圈电压 V - 50 Hz
VB6-30-10 24
VB6-30-10 110
VB6-30-10 220
VB6-30-10 380
VB6-30-01 24
VB6-30-01 110
VB6-30-01 220
VB6-30-01 380
VB7-30-10 24
VB7-30-10 110
VB7-30-10 220
VB7-30-10 380
VB7-30-01 24
VB7-30-01 110
VB7-30-01 220
VB7-30-01 380
接触器 (直流电操作) 
BC 型三较直流操作接触器 
型号 线圈电压 V DC
BC6-30-10 24
BC6-30-10 110
BC6-30-10 220
BC6-30-01 24
BC6-30-01 110
BC6-30-01 220
BC7-30-10 24
BC7-30-10 110
BC7-30-10 220
BC7-30-01 24
BC7-30-01 110
BC7-30-01 220
接触器 (直流电操作) 
AL 型三较直流操作接触器 
型号 线圈电压 V DC
AL9-30-10 24
AL9-30-10 110
AL9-30-10 220
AL9-30-01 24
AL9-30-01 110
AL9-30-01 220
AL12-30-10 24
AL12-30-10 110
AL12-30-10 220
AL12-30-01 24
AL12-30-01 110
AL12-30-01 220
AL16-30-10 24
AL16-30-10 110
AL16-30-10 220
AL16-30-01 24
AL16-30-01 110
AL16-30-01 220
AL26-30-10 24
AL26-30-10 110
AL26-30-10 220
AL26-30-01 24
AL26-30-01 110
AL26-30-01 220
AL30-30-10 24
AL30-30-10 110
AL30-30-10 220
AL30-30-01 24
AL30-30-01 110
AL30-30-01 220
AL40-30-10 24
AL40-30-10 110
AL40-30-10 220
AL40-30-01 24
AL40-30-01 110
AL40-30-01 220
接触器 (直流电操作) 
AE, AF 型三较直流操作接触器 
型号 线圈电压 V - 50 Hz
AE50-30-11 24
AE50-30-11 110
AE50-30-11 220
AE63-30-11 24
AE63-30-11 110
AE63-30-11 220
AE75-30-11 24
AE75-30-11 110
AE75-30-11 220
AF95-30-11 100-250 VAC / DC
AF110-30-11 100-250 VAC / DC
AF145-30-11 100-250 VAC / DC
AF185-30-11 100-250 VAC / DC
AF210-30-11 100-250 VAC / DC
AF260-30-11 100-250 VAC / DC
AF300-30-11 100-250 VAC / DC
AF400-30-11 100-250 VAC / DC
AF460-30-11 100-250 VAC / DC
AF580-30-11 100-250 VAC / DC
AF750-30-11 100-250 VAC / DC
AF1350-30-11 100-250 VAC / DC
AF1650-30-11 100-250 VAC / DC
接触器 (直流电操作) 
BC, AL, AE, EK 四较直流操作接触器 
型号 线圈电压 V DC
BC6-40-00 24
BC6-40-00 110
BC6-40-00 220
BC7-40-00 24
BC7-40-00 110
AL9-40-00 24
AL9-40-00 110
AL9-40-00 220
AL16-40-00 24
AL16-40-00 110
AL16-40-00 220
AL26-40-00 24
AL26-40-00 110
AL26-40-00 220
AE50-40-00 24
AE50-40-00 110
AE50-40-00 220
AE75-40-00 24
AE75-40-00 110
AE75-40-00 220
EK110-40-21 24
EK110-40-21 110
EK110-40-21 220
EK150-40-21 24
EK150-40-21 110
EK150-40-21 220
EK175-40-21 24
EK175-40-21 110
EK175-40-21 220
EK210-40-21 24
EK210-40-21 110
EK210-40-21 220
EK370-40-21 24
EK370-40-21 110
EK370-40-21 220
EK550-40-21 24
EK550-40-21 110
EK550-40-21 220
EK1000-40-21 110
EK1000-40-21 220
接触器 (直流电操作) 
VBC 三较小型可逆接触器 
型号 线圈电压 V DC
VBC6-30-10 24
VBC6-30-10 110
VBC6-30-10 220
VBC6-30-01 24
VBC6-30-01 110
VBC6-30-01 220
VBC7-30-10 24
VBC7-30-10 110
VBC7-30-10 220
VBC7-30-01 24
VBC7-30-01 110
VBC7-30-01 220
电容器接触器 
UA 接触器, 用于三相电容器 
型号 线圈电压 V - 50 Hz
UA26-30-10 24
UA26-30-10 110
UA26-30-10 220
UA26-30-10 380
UA30-30-10 24
UA30-30-10 110
UA30-30-10 220
UA30-30-10 380
UA50-30-00 24
UA50-30-00 110
UA50-30-00 220
UA50-30-00 380
UA63-30-00 24
UA63-30-00 110
UA63-30-00 220
UA63-30-00 380
UA75-30-00 24
UA75-30-00 110
UA75-30-00 220
UA75-30-00 380
UA95-30-11 24
UA95-30-11 110
UA95-30-11 220
UA95-30-11 380
UA110-30-11 24
UA110-30-11 110
UA110-30-11 220
UA110-30-11 380
电容器接触器 
VD4 12.06.25  VD4-630-25KA
VD4 12.06.32  VD4-630-31.5
VD4 12.12.25  VD4-1250-25
VD4 12.12.32  VD4-1250-31.5
VD4 12.12.40  VD4-1250-40
VD4 12.16.25  VD4-1600-25
VD4 12.16.32  VD4-1600-31.5
VD4 12.16.40  VD4-1600-40
VD4 12.20.25  VD4-2000-25
VD4 12.20.32  VD4-2000-31.5
VD4 12.20.40  VD4-2000-40
VD4 12.25.25  VD4-2500-25
VD4 12.25.32  VD4-2500-31.5
VD4 12.25.40  VD4-2500-40
手车式VD4/Z 12.06.25  VD4-630-25KA
VD4/Z 12.06.32  630   31.5
VD4/Z 12.12.25  1250  25
VD4/Z 12.12.32  1250  31.5
VD4/Z 12.12.40  1250  40
VD4/Z 12.16.25  1600  25
VD4/Z 12.16.32   1600 31.5
VD4/Z 12.16.40   1600  40
VD4/Z 12.20.25   2000  25
VD4/Z 12.20.32  2000 31.5
VD4/Z 12.20.40  2000  40
VD4/Z 12.25.25  2500  25
VD4/Z 12.25.32  2500 31.5
VD4/Z 12.25.40  2500  40VD4 17.06.25
VD4 17.06.32VD4 17.12.25
VD4 17.12.32VD4 17.16.25
VD4 17.16.32VD4 17.20.25
VD4 17.20.32VD4 17.25.25
VD4 17.25.32VD4/Z 17.06.25
VD4/Z 17.06.32VD4/Z 17.12.25VD4/Z 116.25
VD4/Z 17.16.32VD4/Z 17.20.25
VD4/Z 17.20.32VD4/Z 17.25.25VD4/Z 17.25.32
VD4-1206-25MVD4-1206-31MVD4-1212-25M
VD4-1212-31MVD4-1212-40M
VD4-1212-50MVD4-1216-25M
VD4-1216-31MVD4-1216-40M
VD4-1216-50MVD4-1220-25M
VD4-1220-31MVD4-1220-40M
VD4-1220-50MVD4-1225-25M
VD4-1225-31MVD4-1225-40MVD4-1225-50M
VD4-1231-50MVD4-1240-50M
VD4-1206-31M
VD4-1212-31MVD4-1212-40M
VD4-1216-25MVD4-1216-31M
VD4-1216-50M
VD4-1220-31M
VD4-1220-50M
VD4-1225-31M
VD4-1225-50M
VD4-1240-50MVD4-1706-20M