Estimating Contact Life of Products with Specific Loads

General Information


How many switching cycles will the contacts on your products operate with a specific load?


The electrical life of the relay is directly related to the load it is controlling. The electrical life at full load is 100,000 operations for most Macromatic products. To determine expected life at other load levels, use the graphs below. The following test results were provided by the manufacturer’s of the relay contacts.

The graphs represent all available data for estimating electrical life. Results are typical under the test conditions prescribed by each relay contact manufacturer. Macromatic does not promise nor warranty the operating life results indicated in the graphs.

Product Series ARP, CA, CHR, CM, CO, CU, PMD, PMPU-FA, TD-7, TD-8, TR-5, TR-6, VAK, VAKP, VMKP, VMP, VWKP, VWP:



Product Series- ISP:

Product Series – TAA2U:


Product Series – TAA2U:


Product Series – TE, VAKE,VWKE:



Product Series – ATP:



Product Series – PMP, VAKPU, VWKPU:

No data is available for PAP, PCP, PLP.