Product Description
Contact
Frequently Asked Questions
Q: What are contact tips and what function do they serve?
A: Contact tips are the wear surfaces on contactors and motor starters that engage and disengage to control electrical circuits. The BA 993807 contact is designed to handle arcing during switching and carry continuous motor current. Proper contacts ensure reliable motor engagement and circuit protection.
Q: What material composition do the BA 993807 contacts use?
A: These contacts are typically silver alloy or silver-cadmium composite, chosen for low electrical resistance and arcing resistance during motor switching. The material composition provides durability across thousands of engagement cycles typical in electric lift truck operation.
Q: Which electric lift truck brands use BA 993807 contact specifications?
A: The BA 993807 contact fits contactor and motor starter assemblies used in Crown, Toyota, Raymond, Yale, Hyster, and other electric pallet jack and forklift models. Verify your contactor or starter voltage rating (24V or 36V) and frame size to confirm compatibility.
Q: What is the expected lifespan of contacts in electric lift trucks?
A: Under normal usage, contacts typically last 2 to 5 years depending on cycle frequency and electrical load. Heavy-duty operations with frequent motor engagement will accelerate contact wear. Monitor contactor performance and schedule preventive replacement during regular maintenance intervals.
Q: What symptoms indicate contacts need replacement?
A: Replace contacts if the motor hesitates before engaging, chatters when activated, or fails to engage consistently. Visual inspection may show pitting, burning, or reduced contact surface. These symptoms indicate the contact surfaces can no longer maintain reliable electrical connection.