主電路是給異步電動機提供調壓調頻電源的電力變換部分，變頻器的主電路大體上可分為兩類：電壓型是將電壓源的直流變換為交流的變頻器，直流回路的濾波是電容。鄭工19959281761Cool Muscle KH42KM2B036
COOL MUSCLE KH56QM2B048
MUSCLE KH56QM2B048
BECKHOFF KL3403-0010
倍福 KL9528
YOKOGAWA KM13-1S下載線KM11-2T
MELEC KP1305-2 C-872
weishaupt KS40-108-9090M-D35
KUKA KSD1-08
KUKA KSD1-16
KUKA KSD1-32
KUKA KSD1-48
KUKA KSD1-48 E93DA12314B531
KUKA KSD1-64
Culter-Hammer KT3400TA
SICK KT5W-2P1116
KUKA KUKA KCP2 00-130-547
KVH KVH DSP 5000 DSP-5000
R.B DENISON L100W
Denison L100WS
MICRO SWITCH L324
FREEPORT L324 IEC60947-5-1
FREEPORT L324 IEC60947-5-1(1.5A 240VAC)
MICRO SWITCH L324IEC60947-5-11.5A240V
SCHNEIDER LA1-DN13C
SCHNEIDER LA1-DN22C
SCHNEIDER LA1-DN40C
APT LA38-11/209\10A
JKL Components LAMP 120M
POWER METER LASERSTAR-R
SMC L-B32H
海德漢 LC 183/10NM ID 557679-09
Sencore LC103
海德漢 LC183ML240 ID557679-02
施耐德 LC1D150R7
SCHNEIDER LC1D17000M7C 170安培 220V
SCHNEIDER LC1D17000M7C 170安培，220V
施耐德 LC1D38M7C
SCHNEIDER LC1D4011
SHNEIDER LC1D50M7
SCHNEIDER LC1-D50M7C LADN22C
施耐德 LC1F185
SCHNEIDER LC1F225BD
SCHNEIDER LC1F265動靜觸點
CLOVER LCD4000RX
Invensys LCM-84210
Invensys LCMA-116
