The 100-D300EP11 contactor is an Allen-Bradley Bulletin 100-D contactor. It is built with an electronic coil which is rated for 100 Volts AC. The coil has a built-in electronic interface. The 100-D300EP11 contactor is part of a series of contactors called the Bulletin 100-D series and it has features that make it ideal for a wide variety of applications. These features include its electronic coils, auxiliary contacts, and its electrical lifespan of up to 10 million operations. The current rating of the 100-D300EP11 contactor is 300 Amps for 3-phase AC applications. The contactor current rating for single-phase applications is 450 Amps at 40 degrees Celsius and the contactor current rating for single-phase applications is 380 Amps at 60 degrees Celsius.

The Allen-Bradley 100-D300EP11 Bulletin 100-D contactor has a rated life span of 1 million operations at 120 Amps and a rated life span of 10 million operations at 100 Amps. The ideal ambient conditions for contactor operation are up to 6600 feet altitude and a -25 to 60 degrees Celsius temperature range. If the ambient temperature increases to 70 degrees Celsius, the current rating reduces by 15%. Operation of the 100-D300EP11 contactor outside of the conditions recommended by Allen-Bradley can also lead to contactor malfunction. The 100-D300EP11 contactor has an environmental protection rating of IP 00 which makes it suitable for indoor use only. Because it is a Bulletin 100-D contactor, the 100-D300EP11 contactor only supports panel mounting. To ensure reliable operation in the long term, Allen-Bradley recommends contactor installation by qualified technicians and the use of original spare parts only.