The Allen-Bradley 1336-SCR-SP9A is an SCR input kit for AC motor drives in the 1336 series. It is mountable on 460 Volts AC rated drives with 150 to 250 Horsepower ratings. This includes 1336 PLUS, 1336 PLUS II, 1336 Force, and 1336 Impact and Regenerative AC drives. All of these drives have a Frame E size and 150 Horsepower, 200 Horsepower, or 250 Horsepower power ratings. This item is a spare part and users only need one item per AC drive. Among AC drive spare parts, this item is classified as a Level 2 spare part and it belongs to a group of minor assemblies. When installed in 1336 series AC drives, this device protects their functions from being damaged in overvoltage situations. It can help in these situations by drawing power whenever the voltage goes over the specified limit. In this way, this integral part of the drive prolongs its life and reduces downtime.

The Allen-Bradley 1336-SCR-SP9A is a semiconductor-controlled rectifier which allows the current to flow only in one direction. It is triggered by currents going into the gate which, when applied in a controlled manner, provides a rectifying effect that is needed in an AC drive. This is how this device is used to control high power signals over low power signals at its input. The 1336-SCR-SP9A is integrated into Allen-Bradley AC drives to produce efficient power control. This is conducted with fast switching mechanisms. The 1336-SCR-SP9A is shipped with an approximate weight of 1.5 kilograms. Note that the 1336 series drives that include this element are obsolete. Do not expose this kit to environments with high humidity because oxidation is likely to build up on its surface.