Power Relays Reducing CO2 and TCO (Total Cost of Ownership)
The permanent power consumption of a conventional monostable relay is up to 10 or even 15 Watt. At an operation time of 2500h per year this results in significant waste of resources. On the other hand Bistable relays like MPR10 from E-T-A consume no energy during operation, reducing operating costs and CO2 emission significantly. The additional price of an energy saving relay pays off very fast and the OEM can more easily reach emission/fuel consumption targets.
Reduction of Carbon footprint in figures:
Conventional Monostable Relay:
The following calculation: 15W X 2500h = 37,5 kWh per relay per year
Efficiency Diesel (30%) x Efficiency light machine (70%) x Energy content Diesel (9,7 kWh/l) = 2,04 kWhel/l Diesel ⇒ ca. 18 litres Diesel per year ca. 20 € per year
Bistable Relay MPR10
By changing to a Bistable relay MPR10 you reduce you save 18 litres of Diesel annually.
Annual to CO2 reduction= 18 X 2640g = Approx 47Kg CO2 reduction
Compare other E-T-A Power Relay models:
MPR20 = 1,4W | EPR10 = Less than 0,1W
Rule of thumb: 100Wel = 0.1l/100km
Datasheet | Mechanical power relays (MPR10, MPR20)