Manufacturer: Daiichi Electronics Co., Ltd.
Model: DERS-24 Series (DERS-24-10/20/10E/20E)

Features

• It absorbs only surges without affecting the measurement signal.
• A two-stage varistor configuration ensures reliable surge operation.
• Line voltage is reliably suppressed to a low value.
• A dual-element version is available, enabling space-saving design.
• The arrester’s status is visible by opening the central cover. If a lightning surge exceeds 1,000A, the fuse blows, clearly indicating circuit insulation failure.

Wiring Diagram