Siemens WL0FL0 Open Fuse Lockout Device

Siemens WL0FL0 Open Fuse Lockout Device is a safety accessory for Siemens WL-series low-voltage circuit breakers that locks the fuse path in the open position to prevent re-energization during maintenance and testing of the protected circuit. As an Open Fuse Lockout (OFLO) accessory, it attaches to the WL fuse carrier to create a visible mechanical barrier that keeps the circuit isolated until the lockout is intentionally removed, supporting standard lockout/tagout procedures in industrial electrical equipment. Designed for use with WL-series fuses and carriers, the device helps technicians verify isolation before work, reduces the risk of inadvertent closing, and pairs with other safety devices in Siemens WL switchgear to maintain compliant, safer maintenance environments. The WL0FL0 designation identifies this lockout component as part of the WL family, ensuring compatibility with Siemens WL equipment and aligning with common industry practice for locking out fuse assemblies in both new installations and retrofits.