FORMULA BLD 塑壳断路器D3N250 TMF250/2500 FF 3P根据下列结构特性设计制造。
一. 双重绝缘
FORMULA BLD断路器的带电部件（不包括端子）与正常运行过程中操作员操纵的设备的前端部件之间有双重绝缘。每个电气附件的底座与电源回路隔离，避免与带电部件接触。尤其是操作机构与供电回路隔绝。另外，断路器的带电内部零件之间以及接线端子附近有超大的绝缘距离。并且，距离超过IEC标准规定的距离。
二.热带气候适应性
根据IEC 60068-2-30标准，采用“variant 1”方法（第7.3.3节），在55°C温度条件下对FORMULA BLD系列中的断路器和附件进行了两次测试。基于下列原因，FORMULA BLD系列对于*严酷环境条件的适应性得到进一步保证：
• 绝缘塑壳使用玻璃纤维增强合成树脂制成；
• 主要金属部件经过防腐处理；
• 镀层提供Fe/Zn 12锌镀层（ISO 2081）保护，不含六价铬（符合ROHS），达到ISO 4520 2C级耐腐蚀性能。
三.绝缘性能
在分闸位置，断路器保证符合IEC 60947-2标准要求的绝缘距离，因此能够避免输入与输出端子之间的泄漏电流。
四.操作
操纵杆始终指示断路器动触头的位置，从而保证符合IEC 60073及IEC 60417-2标准的安全、可靠信号（I=合闸，O=分闸，黄色-绿色线=因保护性脱扣而分闸）。断路器操作机构带自由脱扣机构，无论操纵杆上的压力和运行速度如何。保护脱扣自动断开动触头：要使触头再次合闸，必须首先将操纵杆从中间位置推到*低端分闸位置，重置操作机构。
壳架Iu 脱扣器In 产品型号订货代码 A A 3P 4P (In N = 100%)
D1 125 TMF 16 D1N125 TMF16/400 FF 1SDA127827R1 1SDA127882R1
20 D1N125 TMF20/400 FF 1SDA127828R1 1SDA127883R1
25 D1N125 TMF25/400 FF 1SDA127829R1 1SDA127884R1
32 D1N125 TMF32/400 FF 1SDA127830R1 1SDA127885R1
40 D1N125 TMF40/400 FF 1SDA127831R1 1SDA127886R1
50 D1N125 TMF50/500 FF 1SDA127832R1 1SDA127887R1
63 D1N125 TMF63/630 FF 1SDA127833R1 1SDA127888R1
80 D1N125 TMF80/800 FF 1SDA127834R1 1SDA127889R1
100 D1N125 TMF100/1000 FF 1SDA127835R1 1SDA127890R1
125 D1N125 TMF125/1250 FF 1SDA127836R1 1SDA127891R1
D2 160 TMF 63 D2N160 TMF63/630 FF 1SDA128060R1 1SDA128072R1
80 D2N160 TMF80/800 FF 1SDA128061R1 1SDA128073R1
100 D2N160 TMF100/1000 FF 1SDA128062R1 1SDA128074R1
125 D2N160 TMF125/1250 FF 1SDA128063R1 1SDA128075R1
160 D2N160 TMF160/1600 FF 1SDA127837R1 1SDA127892R1
D3 250 TMF 200 D3N250 TMF200/2000 FF 1SDA127838R1 1SDA127893R1
225 D3N250 TMF225/2250 FF 1SDA127839R1 1SDA127894R1
250 D3N250 TMF250/2500 FF 1SDA127840R1 1SDA127895R1
D4 400 TMF 320 D4N400 TMF320/3200 FF 1SDA127841R1 1SDA127896R1
400 D4N400 TMF400/4000 FF 1SDA127842R1 1SDA127897R1
D4 630 TMF 500 D4N630 TMF500/5000 FF 1SDA127843R1 1SDA127898R1
630 D4N630 TMF630/6000 FF 1SDA127844R1 1SDA127899R1
FORMULA BLD 塑壳断路器D3N250 TMF250/2500 FF 3P
壳架Iu 脱扣器In 产品型号订货代码 A A 3P 4P (In N = 100%)
20 D1B 125TMF20/400 F F 1SDA127803R1 1SDA127858R1
25 D1B 125TMF25/400 F F 1SDA127804R1 1SDA127859R1
32 D1B 125TMF32/400 F F 1SDA127805R1 1SDA127860R1
40 D1B 125TMF40/400 F F 1SDA127806R1 1SDA127861R1
50 D1B 125TMF50/500 F F 1SDA127807R1 1SDA127862R1
63 D1B 125TMF63/630 F F 1SDA127808R1 1SDA127863R1
80 D1B 125TMF80/800 F F 1SDA127809R1 1SDA127864R1
100 D1B 125TMF100/1000 F F 1SDA127810R1 1SDA127865R1
125 D1B 125TMF125/1250 F F 1SDA127811R1 1SDA127866R1
16 D1B125 MF16/384 F F 3P 1SDA127912R1
20 D1B125 MF20/384 F F 3P 1SDA127913R1
25 D1B125 MF25/384 F F 3P 1SDA127914R1
32 D1B125 MF32/384 F F 3P 1SDA127915R1
40 D1B125 MF40/480 F F 3P 1SDA127916R1
50 D1B125 MF50/600 F F 3P 1SDA127917R1
60 D1B125 MF60/720 F F 3P 1SDA127918R1
80 D1B125 MF80/960 F F 3P 1SDA127919R1
100 D1B125 MF100/1200 F F 3P 1SDA127920R1
125 D1B125 MF125/1250 F F 3P 1SDA127921R1
63 D2S160 MF63/756 FF 3P 1SDA127952R1
80 D2S160 MF80/960 FF 3P 1SDA127953R1
100 D2S160 MF100/1200 FF 3P 1SDA127954R1
125 D2S160 MF125/1500 FF 3P 1SDA127955R1
160 D2S160 MF160/1600 FF 3P 1SDA127956R1
63 D2S160 TMF63/630 FF 3P 1SDA127845R1 1SDA127900R1
80 D2S160 TMF80/800 FF 3P 1SDA127846R1 1SDA127901R1
100 D2S160 TMF100/1000 FF 3P 1SDA127847R1 1SDA127902R1
125 D2S160 TMF125/1250 FF 3P 1SDA127848R1 1SDA127903R1
160 D2S160 TMF160/1600 FF 3P 1SDA127849R1 1SDA127904R1
200 D3S250 TMF200/2000 FF 1SDA127850R1 1SDA127905R1
225 D3S250 TMF225/2250 FF 1SDA127851R1 1SDA127906R1
250 D3S250 TMF250/2500 FF 1SDA127852R1 1SDA127907R1
200 D3S250 TMF200/2000 FF+RCD+CT110+SOR 1SDA128001R1 1SDA128045R1
225 D3S250 TMF225/2250 FF+RCD+CT110+SOR 1SDA128002R1 1SDA128046R1
250 D3S250 TMF250/2500 FF+RCD+CT110+SOR 1SDA128003R1 1SDA128047R1
