Extremely thin relays integrated with heat sinks. Downsizing achieved through optimum design of heat sink. Mounting possible via screws or via DIN track. Close mounting possible for linking terminals. (Except for G3PA-260B-VD and G3PA-450B-VD-2). Applicable with 3-phase loads. Replaceable power element cartridges. Complies with VDE 0160 (finger protection), with a dielectric strength of 4,000 V between input and load. Complies with VDE 0805, IEC 950. Certified by UL, CSA, and VDE (reinforced insulation). The G32A-A Power Device Cartridge (a Triac Unit) can be replaced with a new one. When the temperature indicator has changed from pink to red, the triac circuitry may have malfunctioned possibly by an excessive flow of current, in which case, dismount the damaged cartridge for replacement. The damaged cartridge can be replaced with a new one without disconnecting the wires from the G3PA.