Compact power relay carries 110A and adds welding detection for energy switching

The HE-A AHEAxxx power relays focus on high carrying current and reinforced insulation in a space-conscious package, supporting power stages that must switch high loads while keeping creepage, clearance, and contact separation under control. The family includes Form 1A and Form 1B options, with different variants adding a mirror contact mechanism to support welding detection.

Designed around a compact footprint, the HE-A family still supports 110A maximum carrying current. For demanding energy infrastructure, the HE-A relays add short-circuit capability and high dielectric strength. UL 508 short-circuit capability is specified as 5000Arms at 240V ac with a Class K5 fuse rated 100A. Dielectric strength is specified up to 5000Vrms for 1 minute between Form A contact and coil, with surge withstand voltage up to 10,000V between Form A contact.

Low operating power supports thermal design in densely packed systems. Coil operating power is 1.92W, and holding power can be reduced to 310mW when using the recommended holding-voltage method after 100ms. The operating temperature range for usage, transport, and storage is -40°C to 85°C, with guidance on reduced coil holding voltage.