STANDBY POWER INTERLOCK KIT – Manual Transfer Interlock for Electrical Safety The STANDBY POWER INTERLOCK KIT is designed to interlock two main breakers, ensuring that both cannot be "ON" simultaneously. This prevents dangerous feedback between two sources of power, making it essential for applications involving standby power systems. Suitable for use by electrical distributors, lighting solutions providers, wire and cable suppliers, and switchgear suppliers, this interlock kit enhances safety and compliance in load centers and meter combinations. Specifications Manufacturer: Siemens Manufacturer Part #: ECSBPK04 Amperage Rating: 225 amperes Dimensions (W x H x L): 3.00 in x 1.00 in x 5.00 in Weight: 0.42 lbs Country of Origin: Mexico UPC: 783643540040 Features Prevents simultaneous "ON" position of two main breakers to eliminate hazardous line feedback Designed for use on Ultimate™ and Rock Solid load centers, 125 amp and lower Attaches directly to breakers, not the load center trim Compatible with QP, QPH, HQPH breaker types Manual transfer interlock enhances electrical safety in standby power applications Downloads & Links Spec Sheet Spec Sheet