Duty Ratings and Switching Frequency
The 3RT2035-3AL20-ZW97: This contactor handles 1 200 operations per hour at AC-1 (resistive load), 1 000/h at AC-3 (standard motor starting), and 300/h at AC-4 (plugging/inching). The AC-3e rating matches the AC-3 figure at 1 000/h — useful for energy-efficient motor applications where the 'e' suffix indicates IEC 60947-4-1 compliance for electronic overload coordination.
Panel Integration and Clearances
Dimensions are 114 mm high, 55 mm wide, 130 mm deep. Snaps onto standard 35 mm DIN rail. Required clearances: 10 mm upwards, 10 mm forwards, 10 mm downwards, 6 mm at the sides. Mounting position allows ±180° rotation on a vertical surface and ±22.5° tilt forward/backward — useful when orienting the panel layout around existing buswork or duct.
Auxiliary Contact Ratings
Built-in auxiliary switch rated: 10 A at 24 V, 2 A at 48 V and 60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V, 3 A at 400 V, 0.6 A at 440 V. The main contacts are configured as 18 normally open and 1 normally closed — a high NO count for multi-load grouping.
Environmental and Mechanical
Operating temperature range -25 to +60 °C; storage range -55 to +80 °C. Mechanical life is 10 million operations typical. Coil holding power: 0.36 VA at 50 Hz, 0.39 VA at 60 Hz. Wire size accepts 2x 0.5 to 2.5 mm² solid or stranded. Arcing time 10 to 20 ms; operating time at AC 10 to 18 ms.