Clearly visible palm fitting red handle allows users to easily see the handle position (On/Off) from a distance and provides for easy operationVisible double break rotary blade mechanism offers 2-points of contact for a positive open and close, easier operation and to help prevent contact burning for longer contact lifeTriple padlocking capability increases personnel safetyInterlocking mechanism keeps the door closed when the handle is in the ON position to maximize safety, although there is a built-in defeater mechanism for user access when necessaryClear line shield protects against accidental contact with energized parts and the probe holes enable the user to test if the line side is energized without removing the shieldComplete accessory and renewal parts data shown on inner door labelMeets stringent UL 98 standards for safety, durability and reliabilityAccepts class r fuses