The 21041-81 is a 375 Series 3-pole, 30 amp power relay manufactured by Deltrol Controls, designed to control electrical loads in motor control, power supply, and electric heat applications. This relay features a 12 VDC coil with a nominal coil power of 2.6 W and operates with a pickup voltage of 75% or less of nominal, with an operate time of approximately 15 milliseconds. The relay is rated for 30 amp switching at 28 VDC and includes silver cadmium oxide contacts with 1/4" diameter, providing reliable electrical performance across diverse industrial applications. The coil is molded in Rynite® PET with Class F temperature insulation, and the relay achieves an electrical life of 100,000 operations at rated load with a mechanical life of 10,000,000 operations. The printed circuit terminal version offers superior integration into modern control systems while maintaining low cost compared to small contactors.