CTW Series are clamp-on type Current Transformers that can be mounted without cutting cables when upgrading existing equipment. Standard lineup includes 100 A, 200 A, 500 A and 800 A models. Also compact and light-weight 100 A and 300 A models are available. CTW Series contain a built-in device for suppressing hazardous voltages that prevents a burnout or outage at the open-circuit of secondary line.

CTU Series are separate, wall-mounting type Current Transformers that can be mounted without cutting cables when upgrading existing equipment. Standard lineup includes 100 A, 200 A and 500 A models.