The solenoid coils (AC or AC/DC operation) are available in three sizes:

• 3RT2924
  for 3-pole contactors 3RT2023- . A, 3RT2024- . A, 3RT2025- . A
• 3RT2926
  for 3-pole contactors 3RT2026- . A, 3RT2027- . A, 3RT2028- . A
  for 4-pole contactors 3RT2325- . A, 3RT2326- . A, 3RT2327- . A, 3RT2526- . A
• 3RT2934
  for 3-pole contactors 3RT203 . - . A, 3RT203 . - . N
  for 4-pole contactors 3RT233 . - . A, 3RT233 . - . N, 3RT253 . - . A
• 3RT2944
  for 3-pole contactors 3RT204 . - . A, 3RT204 . - . N, 3RT244 . - . A, 3RT244 . - . N
  for 4-pole contactors 3RT234 . - . A, 3RT234 . - . N, 3RT254 . - . A, 3RT254 . - . N

Note:

Contactors with AC and AC/DC coils have different depths. It is only possible to replace the coils on AC contactors with AC coils, and on AC/DC contactors with AC/DC coils. It is not possible to replace the coils on DC contactors.