Product Description
CONTACTOR (36 VOLT)
Frequently Asked Questions
Q: What is the 375-1939 and what is its purpose?
A: The 375-1939 is a 36 volt contactor that serves as the main electrical control switch in electric lift trucks. It manages power flow between the battery and motor circuits, allowing safe, controlled engagement and disengagement of high-amperage loads.
Q: Which truck brands and models use the 375-1939 36 volt contactor?
A: The 375-1939 is compatible with 36 volt electric lift trucks from Crown, Toyota, Raymond, Yale, Hyster, Jungheinrich, Linde, Clark, Mitsubishi, CAT, and BT. Always confirm your truck nameplate voltage and OEM specifications match before ordering.
Q: What causes the 375-1939 contactor to fail?
A: Failures result from sustained overload exceeding the rated amperage, voltage spikes from the battery charging system, moisture and corrosion in cold or wet storage, mechanical shock from rough handling, or undersized contactors paired with oversized motors. Electrical system maintenance reduces failure frequency.
Q: How do I determine if the 375-1939 is the correct replacement contactor?
A: Verify your truck operates on 36 volts DC. Check your truck manual for the OEM contactor part number or specification sheet. Match the amperage rating to your motor, confirm the coil type and terminal configuration, and ensure physical dimensions fit your contactor mounting location.
Q: What is the expected service life of a 375-1939 contactor?
A: Under normal operating conditions, expect 3 to 5 years of reliable service. In high-cycle duty or harsh environments (cold storage, wet, corrosive), lifespan may be 2 to 3 years. Keeping the electrical system properly maintained and avoiding overload extends service life.
Q: Is the 375-1939 suitable for all 36 volt electric truck brands?
A: The 375-1939 is compatible with multiple brands and models on 36 volt systems, but cross-compatibility depends on matching amperage rating, coil specification, and terminal type. Do not assume all 36 volt contactors are interchangeable. Verify exact specifications against your truck manual.