/products/manufacturers/tdk/b/blog/posts/tdk-introduces-compact-thermofuse-varistors-for-surge-protection-of-up-to-50-kaDowntime Is Expensive. Smart Protection Isn't. With our new MT40 ThermoFuse varistors, we introduce a compact surge protection solution engineered for extreme electrical environments - delivering up to 50 kA peak surge capability in a minimized footpen-USTelligent Community 12