施耐德电气是全球最大的低压电器供应商,旗下有梅兰日兰、TE电器和美商实快电力三大品牌。 美商实快电力的历史： 1902年：底特律熔断器制造厂成立，该厂主要生产箱式熔断器及盒式熔断器式开关。在公司导管接线盒上的署名《D》拥有很高的声望，因此，公司决定更名为实快电力（Square D）；2002年，实快电力推出了世界上最小的Masterpact NT断路器和PowerBus 225低敏感度布线系统；2003年美商实快电力品牌举办了公司成立100周年庆典。这100年同时也是电力和自动化管理技术发展与创新的100年； 美商实快电力公司作为世界最优秀的电气产品， 服务于美国各大公司及电力设施，并在世界各地遍布企业和销售网络，凭借近百年生产经验的配电设备品牌，它承诺创新和可靠的产品来迎合客户需要。在输配电及工控及自动化，广泛用于商业，建筑及工业各领域。美商实快电力的核心业务是电力与自动化管理。实快电力始终处在创新前沿，能够对全球的市场需求做出迅速反应，为配电和工业控制自动化领域提供符合NEMA标准的产品、系统与服务。 该品牌产品具有5大特点：精巧、创新、优质、可靠、安全。  福州恒拓司是SQUARE-D（方D）美商实快中国地区的一级代理商，已在全国范围内为各种类型的企业供应价格优惠的SQUSRE-D(美商实快)原厂原装的优质产品。
型号如下：
品牌 品名 型号
SQUARE-D 压力开关 9012GAW5
SQUARE-D 脚开关 9002AW132
SQUARE-D 限位开关 9007TUB4
SQUARE-D 限位开关摇臂 9007-B1
SQUARE-D 按钮 9001KR3BH5Y238
SQUARE-D 限位开关 9007-C54D
SQUARE-D 时间继电器 9050-JCK70V24
SQUARE-D 限位开关 9007C54F
SQUARE-D 热继电器 LB1-LB03P13
SQUARE-D 热继电器 LD1-LB030Q
SQUARE-D 限位开关 9007-CR53B2
SQUARE-D 限位开关 XCMA102
SQUARE-D 限位开关 9007C68T10
SQUARE-D 压力开关 9012GDW-5
SQUARE-D 限位开关 9007C62B2
SQUARE-D 压力开关 9007C62B2
SQUARE-D 限位开关 9007CR53B2M11
SQUARE-D 压力开关 CLASS 9012 GAW1
SQUARE-D 阀位开关 9007/CR53E
SQUARE-D 限位开关 9007TUB4+9007DA12
SQUARE-D 皮带跑偏开关 9007CR61B2
SQUARE-D 压力开关 9012GAW4K1
SQUARE-D 压力开关 9012GAW5K1
SQUARE-D 断路器 FAL341001021
SQUARE-D 限位开关 9007FTUB4
SQUARE-D 继电器 8501-KP12V24
SQUARE-D 限位开关 9007FTSB1+9007B9
SQUARE-D 限位开关 9007FTUB3
SQUARE-D 启动器 8536SCO3V02H200S
SQUARE-D 启动器 8536SDO1V02H20S
SQUARE-D 启动器 8536SEO1V02H20S
SQUARE-D 启动器 8536SFO1V02H20S
SQUARE-D 触点 9001KA3G
SQUARE-D 保护继电器 9065SR220
SQUARE-D 保护继电器 9065SR320
SQUARE-D 保护继电器 9065SR420
SQUARE-D 保护继电器 9065SS020
SQUARE-D 变压器 9070EO16D1
SQUARE-D 断路器 EDB14020
SQUARE-D 断路器 EDB24015
SQUARE-D 断路器 FGA34070
SQUARE-D 断路器 FGA34100
SQUARE-D 断路器 FHP36070
SQUARE-D 断路器 GJL36015M03
SQUARE-D 断路器 KAP36125
SQUARE-D 断路器 Q232150
SQUARE-D 压力传感器 9012ADW4M11
SQUARE-D 限位开关附件 9007B1
SQUARE-D 限位开关 9007TUB4M12
SQUARE-D 压力开关 9012GAW4
SQUARE-D 压力开关 9012GAW5
SQUARE-D 限位开关 9007AO36
SQUARE-D 限位开关 9007C62ED
SQUARE-D 限位开关 9007AO12
SQUARE-D 压力开关 9012GAW4
SQUARE-D 压力开关 9012GAW5
SQUARE-D 手臂 9007-B8
SQUARE-D 限位开关 9007-FTSB1
SQUARE-D 限位开关 9007-FTUB4
SQUARE-D 断路器 QOU120
SQUARE-D 断路器 QOU220
SQUARE-D 断路器 QOU280
SQUARE-D 断路器 QOB120
SQUARE-D 限位开关 9007C62B2M11
SQUARE-D 差压开关 9012-GGW21F
SQUARE-D 按钮 9001KR3BH5Y238
SQUARE-D 选择开关 9007AO2
SQUARE-D 断路器 QO120
SQUARE-D 断路器 QO120GFI
SQUARE-D 断路器 QO220
SQUARE-D 断路器 QO220GFI
SQUARE-D 断路器 QO315
SQUARE-D 按钮 QO110EC6
SQUARE-D 按钮 QO116EC6
SQUARE-D 按钮 QO132EC6
SQUARE-D 按钮 QO310EC6
SQUARE-D 按钮 QO320EC6
SQUARE-D 按钮 QO340EC6
SQUARE-D 按钮 SFA3032
SQUARE-D 按钮 SFA3063
SQUARE-D 按钮 SFA3080
SQUARE-D 按钮 SFA3160
SQUARE-D 压力开关 9012GDW5
SQUARE-D 压力开关 9012GDW6
SQUARE-D 压力开关 9012GDW5
SQUARE-D 电气件 9001KXRB35WH1
SQUARE-D 压力开关 9012GDW4
SQUARE-D 压力开关 9012GDW5
SQUARE-D 指示灯座 9001KM1
SQUARE-D 限位开关 9007C54F
SQUARE-D 限位摇杆 9007B1
SQUARE-D 带灯按钮 XD4PA22
SQUARE-D 继电器 RSD41V53
SQUARE-D 继电器 RSD42V53
SQUARE-D 压力开关 9012-GCW1
SQUARE-D 压力开关 9012-GCW3
SQUARE-D 限位开关 9007C54E
SQUARE-D 限位开关 9007C62E
SQUARE-D 限位开关 9007C68T10
SQUARE-D 压力开关 9012GAW4
SQUARE-D 压力开关 9012-GCW1
SQUARE-D 压力开关 9012-GCW3
SQUARE-D 限位开关 9007C54E
SQUARE-D 限位开关 9007C62E
SQUARE-D 限位开关 9007C68T10
SQUARE-D 压力开关 9012GAW4
SQUARE-D 压力开关 9012GAW5
SQUARE-D 摇臂 9007B1
SQUARE-D 限位开关 9007TUB4
SQUARE-D 触点 9001KA1
SQUARE-D 选择开关 9001SKS43B
SQUARE-D 限位开关 9007CR53D
SQUARE-D 热继 LB1-LB03P06   1-1.6A
SQUARE-D 热继 LB1-LB03P08   2.5-4A
SQUARE-D 热继 LB1-LB03P17   10-16A
SQUARE-D 热继 LB1-LB03P21   12-18A
SQUARE-D 热继 LB1-LC03L22   16-25A
SQUARE-D 接触器 LD1-LB030F
SQUARE-D 接触器 LD1-LC030F
SQUARE-D 继电器 8501KU13M1P14V24
SQUARE-D 继电器 8501RS4V20
SQUARE-D 限位开关 9007C54B2
SQUARE-D 限位开关 9007MA11
SQUARE-D 限位开关 9007-CR61B2
SQUARE-D 限位开关 9007C62F
SQUARE-D 限位开关 9007TUB4
SQUARE-D 压力开关 9012GDW4
SQUARE-D 压力开关 9012GDW5
SQUARE-D 安全开关 9007SGS1DK
SQUARE-D 压力开关 9012 GAW-5
SQUARE-D 行程开关 9007C62B2
SQUARE-D 行程开关 9007C62B2
SQUARE-D 限位开关 9007-C62G
SQUARE-D 压力开关 9012GAW4
SQUARE-D 限位开关 9007-TUB4-M12
SQUARE-D 限位开关 9007-TUB4-M12
SQUARE-D 按钮 9001K1L35
SQUARE-D 按钮 9001K1L35G
SQUARE-D 按钮辅助触点 9001KA-1G
SQUARE-D 按钮 9001KP35
SQUARE-D 按钮 9001KR1UH5
SQUARE-D 按钮 9001KR24Y
SQUARE-D 按钮 9001KS11B
SQUARE-D 按钮 9001KS46FB
SQUARE-D 按钮 9001KS53FB
SQUARE-D 压力开关 9012GCW2 90 TO 2900 PSIG
SQUARE-D 压力开关 9012GDW4 1.5 TO 75 PSIG
SQUARE-D 压力开关 9012GDW5 3.0 TO 150 PSIG
SQUARE-D 限位开关 9007-FTSB1
SQUARE-D 贮器开关 H362AWH
SQUARE-D 限位开关 9007TUC1
SQUARE-D 继电器 LB1-LB03P13
SQUARE-D 继电器 LB1-LB03P17
SQUARE-D 继电器 LD1-LB030Q
SQUARE-D 限位开关 9007AB21
SQUARE-D 压力开关 9012GAW24
SQUARE-D Starter LA1LB031
SQUARE-D Starter LA1LC010
SQUARE-D Starter LA9LC701
SQUARE-D Starter LB1LB03P13
SQUARE-D Starter LB1LC03M53
SQUARE-D Starter LD1LB030BD
SQUARE-D Starter LD4LC030MC
SQUARE-D 压力开关 9012GAW5
SQUARE-D 行程开关附件 9007B1
SQUARE-D 行程开关 9007TUB4M12
SQUARE-D 压力开关 9012GCW21
SQUARE-D 限位开关 9007FTUB4
SQUARE-D 摇臂 9007B22
SQUARE-D 限位开关 9007FTUB4
SQUARE-D 压力开关 9012GAW4
SQUARE-D 压力开关 9012GAW5
SQUARE-D 压力开关 9012GAW4
SQUARE-D 限位开关 9007TUC1
SQUARE-D 压力开关 9012GAW4
SQUARE-D 限位开关 9007FTUB12
SQUARE-D 按钮 8910-DPA43V02
SQUARE-D 压力开关 9012GAW25
SQUARE-D 压力开关 9012G-AW25
SQUARE-D 开关附件 9007B1
SQUARE-D 限位开关 9007TUB4M12
SQUARE-D 按钮 9001KR3BH5Y238
SQUARE-D 压力开关 9012GAW4
SQUARE-D 限位开关 9007AW36
SQUARE-D 限位开关 9007TUC1
SQUARE-D 按钮 9001SKP38
SQUARE-D 限位开关 9007C68T10
SQUARE-D 差压开关 9012GJW-21
SQUARE-D 十字开关 XD4PA24
SQUARE-D 按钮 9001KM1
SQUARE-D 按钮 9001KXPA1R
SQUARE-D 按钮 9001KXPA35G
SQUARE-D 风粉气动门开关 9007C62B2
SQUARE-D 风粉气动门开关 9007C62B2
SQUARE-D 继电器 8501RS4V20
SQUARE-D 变压器 9070T500D33
SQUARE-D 行程开关 9007C62B2
SQUARE-D 摇臂 9007B1
SQUARE-D 限位开关 9007TUB4M12
SQUARE-D 触点 9001KA2G
SQUARE-D 急停按钮 9001KR9P35RH13
SQUARE-D 急停复位按钮 9001KT7
SQUARE-D 压力开关 9012GAW5
SQUARE-D 压力开关 9012GAW4
SQUARE-D 手柄 9422A1
SQUARE-D 手柄 9422A7
SQUARE-D 开关 9422TF2
SQUARE-D 按钮 9001KA2G
SQUARE-D 按钮 9001KM1
SQUARE-D 压力开关 9012ADW7M12
SQUARE-D 限位开关 9007TUB4M12
SQUARE-D 限位开关 9007-TUB4M12
SQUARE-D 变压器 9070T200D1
SQUARE-D 限位摇杆 9007B1
SQUARE-D 压力开关 9012ADW4M11
SQUARE-D 压力开关 9012GAW4
SQUARE-D 接触器 8736SBO4V02S
SQUARE-D 限位开关 9007FTUB12
SQUARE-D 按钮 9001KA2G
SQUARE-D 按钮 9001KM1
SQUARE-D 按钮 9001KR1RH8+9001KA3+9001K4
SQUARE-D 按钮 9001KXPA1G
SQUARE-D 按钮 9001KXPA1R
SQUARE-D 按钮 9001KXPA31A
SQUARE-D 摇臂 9007LA4
SQUARE-D 继电器 8501RS42V24
SQUARE-D 继电器 8501RSD41V53
SQUARE-D 限位开关 9007C68T10
SQUARE-D 限位开关摇臂 9007CA11
SQUARE-D 压力开关 9007B8
SQUARE-D 压力开关 9007TUB4
SQUARE-D 限位开关 9007TUB4M12
SQUARE-D 压力继电器 9012GCW-2
SQUARE-D 限位摇杆 9007B1
SQUARE-D 压力开关 9012GAW4
SQUARE-D 限位开关 9007 C62B2
SQUARE-D 限位开关 9007 C62B2
SQUARE-D 限位开关 FA36060
SQUARE-D 按钮 9001KR3BH5Y238
SQUARE-D 插入式继电器 8501KPD12P14V53
SQUARE-D 光电开关 9012GQG3
SQUARE-D 限位开关 9007FTSB1M11
SQUARE-D 限位开关 9007FTSB1M11
SQUARE-D 安全开关 H362
SQUARE-D 启动器触点 LA1-LC025
SQUARE-D 继电器 8501RS4V20
SQUARE-D 变压器 9070TF750D33
SQUARE-D 压力开关 9012GAW4
SQUARE-D 压力开关 9012GAW5
SQUARE-D 熔断器罩 9070FP1
SQUARE-D 熔断器 9070FSC2
SQUARE-D 选择开关 9001SKRU2
SQUARE-D 压力开关 9012GAW5
SQUARE-D 按钮 9001KXPA1A
SQUARE-D 按钮 9001KXPA1R
SQUARE-D 按钮 9001KXRB1A