Panasonic Industry HE-A General Power Relays

Panasonic Industry HE-A General Power Relays are high-capacity relays that achieve a maximum switching current of 90A (inductive) and a carry current of 110A. These power relays include an optional normally closed auxiliary contact for contact position monitoring and weld detection. Panasonic Industry HE-A General Power Relays also include a mirror contact mechanism with an auxiliary contact compliant with IEC 60947-4-1, enabling weld detection. Additional features include a 5kA short-circuit current rating (SCCR), low coil-holding power of 310mW, and a 3.6mm initial minimum contact gap (Form A). The HE-A relays are available in 12V_DC and 24V_DC coils, along with an optional 1 Form B weld detection contact in a compact 33mm x 38mm x 38.8mm size. The relays are used in photovoltaic (PV) inverters, solar panels, electric vehicle supply equipment (EVSE), and level 2 EV charging stations.

Features

Maximum 110A carrying current suitable for high-current applications (low heat generation)
Normally closed auxiliary contact option for weld detection
5kA SCCR for withstanding fault current
Contact gap (initial):
- Minimum 3.6mm for Form A
- Minimum 0.5mm for Form B (when Form A is contact-welded)

90A maximum switching current (inductive)
1.92W low operating power (310mW holding power)
1000MΩ minimum insulation resistance (initial)
Maximum 30ms operate time (at rated coil voltage, at 20°C, without bounce)
98m/s² functional shock resistance (half-sine shock pulse: 11ms, detection time: 10µs)