The New Macey 60 Amp Restrained Dummy Plug is a critical safety and maintenance component for underground mining operations. Fitted with a diode on the pilot pin, it enables safe electrical testing of control circuits without energising the main power conductors. This allows operators to simulate load conditions while keeping personnel and equipment protected from live electrical exposure.

In harsh underground environments where dust, moisture and debris are constant challenges, dummy plugs also serve as protective caps for unused receptacles. By sealing the connection interface, they help preserve silver-plated copper contacts, reduce contamination and extend the service life of critical electrical infrastructure. Proper operator training to consistently fit dummy plugs significantly improves equipment reliability and reduces avoidable maintenance issues.