STANDARDIZED RELAYS — Description
EL-3spec tableNissan relay-type codes (1M / 2M / 1T / 1M·1B) used across the EL section to describe relay internals. 'Transfer' = SPDT = the common-pin-switching type seen on most ABS/ECU relays.
Description
NORMAL OPEN, NORMAL CLOSED AND MIXED TYPE RELAYS
NOTE
Relays can mainly be divided into three types: normal open, normal closed and mixed type relays. The diagram shows the contact state in both SW1 OFF and SW1 ON for all three.
TYPE OF STANDARDIZED RELAYS
1M
Name1 Make
DescriptionSPST normally-open (single set, single throw)
2M
Name2 Make
DescriptionDPST both normally-open (two independent NO contacts)
1T
Name1 Transfer
DescriptionSPDT — one common terminal switching between NO and NC
1M·1B
Name1 Make 1 Break
DescriptionDPST with one independent NO + one independent NC