Rockwell Automation uses Mindel B-430 for E3 Overload Relay
ALPHARETTA, Ga.--June 11, 2001--In its efforts to develop smaller and more powerful automation solutions, Rockwell Automation is manufacturing its MCS-E3 Overload Relay using Mindel(R) B-430 modified polysulfone from BP Amoco Polymers.
Rockwell Automation says the MCS-E3 Electronic Overload Relay is unique in that it's the only product in the industry that includes so many performance features in a small package.
An overload relay combines with a contactor to act as a motor starter. The overload relay protects the motor from damage by opening the contactor and interrupting the current flow to the motor if an overload condition takes place. Rockwell Automation's MCS-E3 Electronic Overload Relay uses a communication protocol called DeviceNet, which is becoming the standard for communication on factory floors. DeviceNet is an open network governed by the ODVA.
"We began using Mindel resin approximately eight years ago," says Pat Murray, project engineer with Rockwell Automation. "Customers wanted us to offer our standard AC contactors in DC formats, so we had to rework our coil designs. DC contactors require larger coils, so the base housing requirements became more demanding from a design and molding standpoint. We started using Mindel resin back then, and we got good moldings right away. Ever since then, we've been using it whenever possible on all of our new power product applications. It has low warpage and flows easily into thin walls, plus it has low shrink characteristics. Through the years, Mindel resin has been a very good material for us across-the-board."
Mindel resin also helps Rockwell Automation meet its aggressive requirements for flammability. "While Underwriters Laboratories only requires a flammability rating of HB, Rockwell Automation designs its components to UL94 V-0," Murray explains. "Using Mindel resin in our designs helps us meet flammability rating objectives."
Mindel modified polysulfone blends are developed by BP Amoco Polymers for demanding, specialized electrical component applications. Mindel blends can bring distinct cost and performance advantages to many component designs.
