The 1336-SN-SP12A board is a spare part kit that contains a converter snubber. It is also known as a printed circuit board (PCB). This spare part kit is available from Allen-Bradley for use with AC drives including the Allen-Bradley1336 PLUS, 1336 IMPACT, 1336 FORCE, and 1336 PLUS II AC drives. The 1336-SN-SP12A board can be used with Frame G drives rated at 600, 500, 450, 400, 350, 300, and 250 Horsepower of output power. Specifically, the 1336-SN-SP12A board is compatible with AC drives designed for 460 Volts AC input voltage which belong to the 1336 PLUS, 1336 IMPACT, 1336 FORCE, and 1336 PLUS II drive series. The quantity of spare part kits like the 1336-SN-SP12A board that are required per drive is 3.

The Allen-Bradley 1336 PLUS, 1336 IMPACT, 1336 FORCE, and 1336 PLUS II drives are solid-state drives and they are more sensitive to electrical noise than electromechanical drives. The performance of these drives can be affected by electrical noise and therefore all the recommended practices that lead to a reduction of noise should be followed. The application of voltage with the incorrect polarity can damage the solid-state controls. Therefore, the voltages should be applied with the correct polarity. Furthermore, solid-state devices can be affected by excessive transient overvoltages. Devices designed to limit voltages may need to be employed. Drives that use the 1336-SN-SP12A board are susceptible to ESD or electrostatic discharge. Allen-Bradley recommends the following precautions to guard against ESD: using a static-safe area for working on the drives, wearing a grounded wrist strap, and the proper handling of sensitive drive components. To minimize the risk of shocks, Allen-Bradley also recommends that the bus capacitors on 1336 AC drives should be allowed to discharge completely before any activity is performed.