Product Description
CONTACTOR (12 VOLT)
Frequently Asked Questions
Q: What is the difference between the CT231D2B and the CT231D2A?
A: The CT231D2B is an updated 12-volt contactor variant with improved contact materials and slightly higher arc resistance compared to the CT231D2A. Both handle identical voltage and amperage ratings. The B designation indicates a later design generation.
Q: Is the CT231D2B compatible with the same lift trucks as the CT231D2A?
A: Yes. The CT231D2B is a direct fit replacement for CT231D2A applications. It works on Crown, Toyota, Raymond, Yale, Clark, CAT, Mitsubishi, and BT 12-volt electric trucks and pallet jacks.
Q: What amp rating does the CT231D2B support?
A: The CT231D2B is rated for 500 amps continuous DC switching, matching the CT231D2A specification. Do not use on high-amperage circuits exceeding 500 amps, as this will cause contact failure.
Q: Why would I choose the CT231D2B over the CT231D2A?
A: The CT231D2B offers improved durability in high-cycle applications and harsh environments. If you experience frequent contactor failures or operate in cold storage, the B variant provides 15 to 20 percent longer service life.
Q: What cross-reference part numbers exist for the CT231D2B?
A: The CT231D2B is equivalent to Crown CR-231D2B, Toyota 8FG-CTR12B, Raymond CU-231D2B, and Yale 580044701. Confirm part numbers match your equipment documentation before ordering.
Q: How do I diagnose failure in a CT231D2B contactor?
A: Test with a multimeter: de-energized, main terminals should show open circuit. Energized, they should show near-zero ohms (continuity). If the truck does not respond to key commands or motor spins intermittently, the contactor likely failed.