ERZ-E-S1 ZNR® Transient / Surge Absorbers Panasonic ERZ-E-S1 ZNR® Transient / Surge Absorbers offer outstanding performance and a broad -40°C to +125°C operating temperature range in a 14mm diameter package. Panasonic ERZ-E-S1 metal oxide varistors (MOVs) protect electronic equipment against voltage surges while providing space- and cost-effectiveness. ERZ-E-S1 provides the same performance and lead spacing as 20mm varistors but in a smaller size.