Hartland Controls / Littelfuse HCR-6 DPDT General Purpose Switching Relays provide a mechanical life expectancy of 1 million operations. These multi-positional mount relays offer 0.250″ QC power pole and coil terminations, silver cadmium oxide contacts, and Class B insulation system. The relays control circuits through a low-power signal. An electromagnetic current actuates the relay, creating a closed circuit within the device. Hartland Controls / Littelfuse HCR-6 DPDT General Purpose Switching Relays are in-house tested and validated. Applications include HVAC systems, standby power supplies, and telephone exchanges.