The ELUM™ is a single-pole double-throw contact (SPDT) switch that allows normally-closed and normally-open configurations. The ELUM is a make-before-break or shorting switch. The ELUM can also be configured for SPST use. For normally open SPST functions, only terminals 3 and 2 are used. For normally closed SPST functions, only terminals 3 & 4 are used.

