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What does form Y250 indicate on Class 8910 Type DP?

Form Y250 specified Class 8910 Type DP Series B one pole and two pole contactors to be equipped with metallic base plate. Form was used while the manufacturing facility could build either Series A or Series B with the same catalog number. Current Series B provides metallic base plate as standard and does not require this form.

CTA-ID : 1484
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